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BEGIN:VEVENT
SUMMARY:TBD
DTSTART:20260825T210000Z
DTEND:20260825T220000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/1
DESCRIPTION:by TBD as part of University of Mississippi Physics and Astron
omy Colloquium\n\nLecture held in Lewis 101.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/1/
END:VEVENT
BEGIN:VEVENT
SUMMARY:TBD
DTSTART:20260901T210000Z
DTEND:20260901T220000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/2
DESCRIPTION:by TBD as part of University of Mississippi Physics and Astron
omy Colloquium\n\nLecture held in Lewis 101.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/2/
END:VEVENT
BEGIN:VEVENT
SUMMARY:TBD
DTSTART:20260908T210000Z
DTEND:20260908T220000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/3
DESCRIPTION:by TBD as part of University of Mississippi Physics and Astron
omy Colloquium\n\nLecture held in Lewis 101.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/3/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sriparna Bhattacharya (Clemson University)
DTSTART:20260915T210000Z
DTEND:20260915T220000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/4
DESCRIPTION:by Sriparna Bhattacharya (Clemson University) as part of Unive
rsity of Mississippi Physics and Astronomy Colloquium\n\nLecture held in L
ewis 101.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/4/
END:VEVENT
BEGIN:VEVENT
SUMMARY:TBD
DTSTART:20260922T210000Z
DTEND:20260922T220000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/5
DESCRIPTION:by TBD as part of University of Mississippi Physics and Astron
omy Colloquium\n\nLecture held in Lewis 101.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/5/
END:VEVENT
BEGIN:VEVENT
SUMMARY:TBD
DTSTART:20260929T210000Z
DTEND:20260929T220000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/6
DESCRIPTION:by TBD as part of University of Mississippi Physics and Astron
omy Colloquium\n\nLecture held in Lewis 101.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/6/
END:VEVENT
BEGIN:VEVENT
SUMMARY:TBD
DTSTART:20261006T210000Z
DTEND:20261006T220000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/7
DESCRIPTION:by TBD as part of University of Mississippi Physics and Astron
omy Colloquium\n\nLecture held in Lewis 101.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/7/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Richard Anantua (UT San Antonio)
DTSTART:20261013T210000Z
DTEND:20261013T220000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/8
DESCRIPTION:by Richard Anantua (UT San Antonio) as part of University of M
ississippi Physics and Astronomy Colloquium\n\nLecture held in Lewis 101.\
nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/8/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Kurt Hinterbichler (Case Western Reserve University)
DTSTART:20261020T210000Z
DTEND:20261020T220000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/9
DESCRIPTION:by Kurt Hinterbichler (Case Western Reserve University) as par
t of University of Mississippi Physics and Astronomy Colloquium\n\nLecture
held in Lewis 101.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/9/
END:VEVENT
BEGIN:VEVENT
SUMMARY:TBD
DTSTART:20261027T210000Z
DTEND:20261027T220000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/10
DESCRIPTION:by TBD as part of University of Mississippi Physics and Astron
omy Colloquium\n\nLecture held in Lewis 101.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/10/
END:VEVENT
BEGIN:VEVENT
SUMMARY:TBD
DTSTART:20261103T220000Z
DTEND:20261103T230000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/11
DESCRIPTION:by TBD as part of University of Mississippi Physics and Astron
omy Colloquium\n\nLecture held in Lewis 101.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/11/
END:VEVENT
BEGIN:VEVENT
SUMMARY:TBD
DTSTART:20261110T220000Z
DTEND:20261110T230000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/12
DESCRIPTION:by TBD as part of University of Mississippi Physics and Astron
omy Colloquium\n\nLecture held in Lewis 101.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/12/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Ish Gupta (UC Berkeley)
DTSTART:20261117T220000Z
DTEND:20261117T230000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/13
DESCRIPTION:by Ish Gupta (UC Berkeley) as part of University of Mississipp
i Physics and Astronomy Colloquium\n\nLecture held in Lewis 101.\nAbstract
: TBA\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/13/
END:VEVENT
BEGIN:VEVENT
SUMMARY:TBD
DTSTART:20261201T220000Z
DTEND:20261201T230000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/14
DESCRIPTION:by TBD as part of University of Mississippi Physics and Astron
omy Colloquium\n\nLecture held in Lewis 101.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/14/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Gabriela Petculescu (Louisiana Accelerator Center / University of
Louisiana at Lafayette)
DTSTART:20260120T220000Z
DTEND:20260120T230000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/15
DESCRIPTION:Title: Elastic Anisotropy in Additively Manufactured 316L Stainless
Steel\nby Gabriela Petculescu (Louisiana Accelerator Center / Univers
ity of Louisiana at Lafayette) as part of University of Mississippi Physic
s and Astronomy Colloquium\n\nLecture held in Lewis 101.\n\nAbstract\nThe
large parameter space in selective laser melting (SLM) — an additive man
ufacturing (a.k.a.\, 3D printing) technology — presents a challenge for
property predictors. In this seminar\, a study of elastic and corrosion pr
operties of SLM 316L under constant 100 W laser power and variable laser s
peed (600 to 1200 mm/s) is presented. Property variations and their relati
on to the change in material microstructure are analyzed. Resonant ultraso
und spectroscopy on mm-sized rectangular parallelepipeds was used for meas
uring location-dependent elastic moduli. Complementary pulse-echo measurem
ents provided volume-integrated values for the longitudinal elastic modulu
s. Cyclic potentiodynamic polarization measurements were used to determine
the corrosion potential\, pitting potential\, repassivation current\, and
corrosion current density of the fabricated samples. The microstructure w
as determined with Electron Backscatter Diffraction. The range of properti
es observed\, understood through grain boundary density and misorientation
distribution analysis\, reinforces the capabilities of materials produced
through SLM: the tuning of fabrication parameters enables materials tailo
ring for optimal performance in specific applications.\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/15/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Ish Gupta (Network for Neutrinos\, Nuclear Astrophysics\, and Symm
etries (N3AS) / University of California — Berkeley / Visiting Scholar\,
Northwestern University)
DTSTART:20260127T220000Z
DTEND:20260127T230000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/16
DESCRIPTION:Title: Canceled due to Ice Storm\nby Ish Gupta (Network for Neu
trinos\, Nuclear Astrophysics\, and Symmetries (N3AS) / University of Cali
fornia — Berkeley / Visiting Scholar\, Northwestern University) as part
of University of Mississippi Physics and Astronomy Colloquium\n\nLecture h
eld in Lewis 101.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/16/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sriparna Bhattacharya (Department of Physics and Astronomy\, Clems
on University)
DTSTART:20260203T220000Z
DTEND:20260203T230000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/17
DESCRIPTION:Title: Canceled due to Ice Storm\nby Sriparna Bhattacharya (Dep
artment of Physics and Astronomy\, Clemson University) as part of Universi
ty of Mississippi Physics and Astronomy Colloquium\n\nLecture held in Lewi
s 101.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/17/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Kayla DeHolton (Department of Physics\, Penn State University)
DTSTART:20260217T220000Z
DTEND:20260217T230000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/18
DESCRIPTION:Title: Neutrino Oscillations at the South Pole and Beyond\nby K
ayla DeHolton (Department of Physics\, Penn State University) as part of U
niversity of Mississippi Physics and Astronomy Colloquium\n\nLecture held
in Lewis 101.\n\nAbstract\nDespite being one of the most abundant known pa
rticles in the universe\, neutrinos remain an enigma within the Standard M
odel. The past quarter-century has seen great experimental strides in meas
uring the properties of neutrino oscillations. However\, many fundamental
questions remain unanswered\, some of which can be probed through atmosphe
ric neutrino oscillations. The IceCube DeepCore detector at the South Pole
has been collecting GeV-scale neutrino data for the past decade\, and cur
rently provides world-leading measurements of the neutrino oscillation par
ameters using atmospheric neutrinos. IceCube's ability to measure these pa
rameters will improve even further with the IceCube Upgrade currently bein
g deployed in Antarctica. The IceCube Upgrade will consist of 7 additional
densely-instrumented strings with new types of modules containing multipl
e PMTs\, greatly increasing detector performance for GeV-scale neutrinos.
Furthermore\, the techniques developed for these measurements can be readi
ly applied to additional science priorities\, such as atmospheric neutrino
oscillations with the DUNE far detectors\, GeV multi-messenger astrophysi
cs with IceCube\, and improvements to open-source deep learning reconstruc
tion frameworks used in the neutrino telescope community.\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/18/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Jeremy Wolcott (Department of Physics and Astronomy\, Tufts Univer
sity)
DTSTART:20260303T220000Z
DTEND:20260303T230000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/19
DESCRIPTION:Title: Multifaceted Nu Insights: Harnessing MCMC to Inspect Neutrin
o Oscillations from Every Angle\nby Jeremy Wolcott (Department of Phys
ics and Astronomy\, Tufts University) as part of University of Mississippi
Physics and Astronomy Colloquium\n\nLecture held in Lewis 101.\n\nAbstrac
t\nNeutrinos are among the most unusual of the fundamental particles known
in modern physics. Besides interacting with ordinary matter so rarely tha
t supermassive detectors or extremely intense sources are required to even
observe them\, and being separated from the other fundamental fermions by
at least six orders of magnitude in mass\, neutrinos exhibit a rich pheno
menology that may at last give us hints as to where we should look beyond
current theory for new fundamental insights. The discovery of an underlyin
g symmetry in the way the neutrino states interact with one another or the
way the neutrinos' masses are arranged\, for instance\, or the violation
of symmetries between neutrinos and their antimatter counterparts\, could
have profound consequences for both particlephysics and cosmology.\n\nHowe
ver\, contemporary experiments attempting to access this phenomenology mus
t grapple with its numerous degeneracies and multiple degrees of freedom.
In this talk\, I will discuss how Bayesian Markov chain Monte Carlo (MCMC)
is being used to simultaneously examine many different aspects of neutrin
o oscillation measurements with an efficient computing approach. I will re
view its applications to current data from the NOνA experiment at Fermila
b\, and show how we obtain insights into both the underlying physical syst
em and our instrumental setup. I will conclude with some thoughts about MC
MC's promise for future neutrino oscillation measurements.\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/19/
END:VEVENT
BEGIN:VEVENT
SUMMARY:-
DTSTART:20260310T210000Z
DTEND:20260310T220000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/20
DESCRIPTION:Title: No Colloquium - Spring Break\nby - as part of University
of Mississippi Physics and Astronomy Colloquium\n\nLecture held in Lewis
101.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/20/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Angelle Tanner (Department of Physics and Astronomy\, Mississippi
State University)
DTSTART:20260317T210000Z
DTEND:20260317T220000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/21
DESCRIPTION:Title: The NASA Pioneers Landolt Mission: Aiming lasers at the Eart
h for Science!\nby Angelle Tanner (Department of Physics and Astronomy
\, Mississippi State University) as part of University of Mississippi Phys
ics and Astronomy Colloquium\n\nLecture held in Lewis 101.\n\nAbstract\nTh
e Landolt mission\, which is a laser-packing 16U CubeSat selected for the
NASA Pioneers program\, will provide improved stellar absolute flux uncert
ainties that will have a significant impact on our knowledge of the proper
ties of extrasolar planets\, supernova\, and beyond. Now that Gaia has pro
vided improved distances and cutting-edge echelle spectrographs are reachi
ng RV precisions below 1 m/s\, the error on the flux of the star can be th
e dominant source of uncertainty for some planet properties. While the tra
nsit signal geometrically reveals the radius of the planet\, that value an
d the planet's mass depend on the flux of the star and its distance\, radi
us\, and temperature. For some systems\, we expect that the uncertainties
in planet radius could improve from 5% to 0.5% with potential ramification
s for the interpretation of the planet-radius gap. Absolute flux uncertain
ties also impact estimates of stellar ages thus impeding our ability to st
udy planetary properties as a function of time. Supernova cosmology studie
s are dependent on the absolute spectral flux calibration of a set of stan
dard white dwarfs which need to have consistent uncertainties at a range o
f rest wavelengths. These uncertainties then propagate into the parameters
used to determine the dark energy equation of state. For this colloquium
I will describe the Landolt mission\, why we need it\, why it's named afte
r a well-loved astronomer\, and how it will improve our understanding of t
he Universe.\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/21/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Mohamed Laradji (Department of Physics and Materials Science\, Uni
versity of Memphis)
DTSTART:20260324T210000Z
DTEND:20260324T220000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/22
DESCRIPTION:Title: Membrane-Mediated Self-Assembly of Nanoparticles: Curvature\
, Polymer Grafting\, and Self-Limited Organization\nby Mohamed Laradji
(Department of Physics and Materials Science\, University of Memphis) as
part of University of Mississippi Physics and Astronomy Colloquium\n\nLect
ure held in Lewis 101.\n\nAbstract\nNanostructures formed from nanoparticl
es play an important role in emerging technologies\, including plasmonic m
aterials\, photonic devices\, and targeted drug delivery. A central challe
nge is understanding how nanoparticles can spontaneously organize into wel
l-defined structures through simple physical mechanisms. Lipid membranes p
rovide a versatile platform for nanoparticle self-assembly because particl
e adhesion deforms the membrane\, generating curvature-mediated interactio
ns between membrane-bound organize nanoparticles into a wide range of coll
ective structures\, including one-dimensional chains\, regular two-dimensi
onal stars and polygons\, and three-dimensional polyhedral nanoclusters\,
including Platonic solids\, with the resulting morphology controlled by th
e interplay between adhesion strength\, membrane bending rigidity\, and pa
rticle geometry.\n\nOur studies further show that when nanoparticles are g
rafted with polymers and interact with membranes\, the competition between
membrane deformation and polymer conformational entropy produces addition
al effective interactions between particles. Under appropriate conditions\
, these interactions give rise to self-limited nanoparticle clusters\, sug
gesting new routes for designing hierarchically organized nanoparticle ass
emblies.\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/22/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Kevin Yi-Wei Lin (Data Scientist\, Hyperion Technology Group\, Inc
.)
DTSTART:20260331T210000Z
DTEND:20260331T220000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/23
DESCRIPTION:Title: Sound intelligence: Passive Acoustic Applications in Defense
\nby Kevin Yi-Wei Lin (Data Scientist\, Hyperion Technology Group\, In
c.) as part of University of Mississippi Physics and Astronomy Colloquium\
n\nLecture held in Lewis 101.\n\nAbstract\nPassive acoustic techniques off
er a critical advantage on the battlefield: the ability to gather situatio
nal awareness without actively emitting probing waves\, unlike sonar or ra
dar\, which can compromise the user's position. One focus of Hyperion Tech
nologyGroup\, Inc. (Tupelo\, MS) is developing such sensor systems\, inclu
ding hostile Fire Fast Locating sensor (FireFLY)\, Scalable Passive Acoust
ic Reporting & Targeting Nodes (SPARTN) and more. FireFLY is an omni-direc
tional microphone array designed for gunshotand Unmanned Aircraft System (
UAS) detection while SPARTN utilizes in-house infrasound sensors for rocke
ts\, artillery\, and mortars (RAM) detection. As a data scientist at Hyper
ion\, I have been involved in the algorithm development aspects of these s
ystems\,and also a several government-contracted software projects\, inclu
ding Threat-Mapped Protection Assessment and Simulation Tool (TMPAST) for
assessing sniper and bomb threats in a 3D mapping tool\, sound classificat
ion for military ground vehicles\, and Data AssemblyHub for accessing and
processing scientific data from underwater uncrewed systems. In this talk\
, I will go over my personal involvement in these projects\, how my backgr
ound in physical acoustics came into play\, and my journey in transitionin
g from academia to industry.\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/23/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sokrates Pantelides (Department of Physics and Astronomy\, Vanderb
ilt Univeristy)
DTSTART:20260407T210000Z
DTEND:20260407T220000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/24
DESCRIPTION:Title: A Journey on the Nanoscale with a Combination of Theory and
Microscopy\nby Sokrates Pantelides (Department of Physics and Astronom
y\, Vanderbilt Univeristy) as part of University of Mississippi Physics an
d Astronomy Colloquium\n\nLecture held in Lewis 101.\n\nAbstract\nDensity-
functional-theory-based calculations using high-performance computers have
made enormous strides in describing the atomic-scale properties of comple
x materials and structures. In parallel\, scanning transmission electron m
icroscopy (STEM) has reached unprecedented levels of atomic-resolution ima
ging and electron-energy-loss spectroscopy (EELS). The latest advances inc
lude imaging of charge distributions and meV-scale energy resolution in EE
LS\, enabling atomic-resolution vibrational EELS (vEELS). This talk is a j
ourney in the nanoscale world\, highlighting synergistic applications of t
heory and recent STEM advances in nanowire fabrication\, resolution of the
identity of a novel 2D material\, unraveling puzzles in imaged electron d
istributions\, elucidating emergent vibrational properties in superlattice
s\, demonstrating atom-by-atom vEELS with chemical-bond sensitivity\, and
more. Examples of theory going beyond the reach of experiments further sol
idify its role as a partner in the spectacular enterprise of electron micr
oscopy and spectroscopy.\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/24/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Shuang Tu (Department of Electrical & Computer Engineering and Com
puter Science\, Jackson State University)
DTSTART:20260414T210000Z
DTEND:20260414T220000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/25
DESCRIPTION:Title: Multiphysics Modeling and Simulation of Space Charge Effects
in Liquid Argon Time Projection Chambers (LArTPC)\nby Shuang Tu (Depa
rtment of Electrical & Computer Engineering and Computer Science\, Jackson
State University) as part of University of Mississippi Physics and Astron
omy Colloquium\n\nLecture held in Lewis 101.\n\nAbstract\nThis talk presen
ts the development of a high-performance numerical solver designed to simu
late the complex interaction between space charge distributions and electr
ic fields in Liquid Argon Time Projection Chamber (LArTPC) detectors. LArT
PCs are the primary technology for next-generation neutrino experiments\,
relying on highly purified liquid argon and strong electric fields to reco
nstruct particle trajectories. While electrons created by ionization are q
uickly collected at the anode\, the resulting positive argon ions drift si
gnificantly slower at speeds comparable to the bulk fluid flow.\n\nFor sur
face-level detectors like ProtoDUNE-SP\, the constant influx of cosmic ray
s leads to a significant accumulation of these positive ions. This "space
charge" creates substantial distortions in the nominal electric field\, le
ading to spatial and temporal offsets in reconstructed particle tracks and
affecting electron-ion recombination rates. To address this\, we have dev
eloped a coupled numerical framework: the ion transport equation is solved
using a time-accurate\, cell-centered Finite Volume Method (FVM)\,while t
he electric potential is calculated via a continuous Finite Element Method
(FEM).\n\nThe solver accounts for the dynamic coupling where the electric
field dictates ion drift velocity\, and the resulting space charge densit
y serves as a source term for the potential equation. Our implementation i
s parallelized using the Message Passing Interface(MPI) for high-performan
ce scalability. Furthermore\, we will address a custom-developed Computati
onal Fluid Dynamics (CFD) package to incorporate realistic background flow
velocities into the convective transport. We will discuss the verificatio
n of this solverand its implications for improving the calibration and phy
sics reach of large-scale LArTPC detectors.\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/25/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Claire Zukowski (Swenson College of Science and Engineering\, Univ
ersity of Minnesota — Duluth)
DTSTART:20260421T210000Z
DTEND:20260421T220000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/26
DESCRIPTION:Title: Gravity as a Hologram\nby Claire Zukowski (Swenson Colle
ge of Science and Engineering\, University of Minnesota — Duluth) as par
t of University of Mississippi Physics and Astronomy Colloquium\n\nLecture
held in Lewis 101.\n\nAbstract\nQuantum gravity aims to combine the quant
um physics relevant at scales below the size of an atom with Einstein's th
eory of gravity\, which applies at the largest scales. This is crucial for
understanding regimes where a large amount of gravitating mass is compres
sed to a tiny distance scale\, for instance near the singularity of a blac
k hole or close to the Big Bang that populated our universe. Holography gi
ves a realization of quantum gravity through explicit dualities between qu
antum physics and gravity. After giving an overview of this framework\, I
will show how several geometrical aspects of gravity are emergent from qua
ntum physics. Importantly\, my focus will be on a geometry called de Sitte
r spacetime\, which closely resembles our actual universe.\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/26/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Steve Winter (Department of Physics\, Wake Forest University)
DTSTART:20260428T210000Z
DTEND:20260428T220000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/27
DESCRIPTION:Title: Effective Hamiltonian Approaches for Quantum Magnets\nby
Steve Winter (Department of Physics\, Wake Forest University) as part of
University of Mississippi Physics and Astronomy Colloquium\n\nLecture held
in Lewis 101.\n\nAbstract\nQuantum materials represent a broad class of s
ystems whose experimental response relies on uniquely quantum aspects such
as entanglement\, Berry phases\, and electronic correlations. Modeling of
such materials presents challenges related to a variety complex behaviors
that manifest at different energy scales. In this field\, first-principle
s approaches often provide a vital bridge between experiments and theoreti
cal models. In this talk\, I will introduce our numerical strategies for s
ystematically building low-energy models with local charge\, spin\, and or
bital degrees of freedom of arbitrary complexity. I will discuss the insig
hts that these methods have yielded for layered vdW materials\, in which s
pin-orbit coupling induces strongly anisotropic and competing magnetic int
eractions.Time (and interest) permitting\, I will also discuss our work on
extending these methods to treat (i) spin-lattice coupling\, and (ii) dyn
amical effective Hamiltonians for modeling non-linear optical responses.\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/27/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sophie Middleton (Division of Physics\, Mathematics and Astronomy\
, Caltech)
DTSTART:20260212T220000Z
DTEND:20260212T230000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/28
DESCRIPTION:Title: Hidden Worlds and Forbidden Processes: Using High Intensity
Lepton Beams to Explore New Physics\nby Sophie Middleton (Division of
Physics\, Mathematics and Astronomy\, Caltech) as part of University of Mi
ssissippi Physics and Astronomy Colloquium\n\nLecture held in Lewis 101.\n
\nAbstract\nDespite its successes\, the Standard (SM) is fundamentally inc
omplete\, failing to fully account for the matter-antimatter asymmetry\, t
he nature of dark matter\, and the origin of neutrino masses. To address t
hese shortcomings\, the “intensity frontier” offers a powerful probe i
nto new physics that either manifests itself at energy scales far beyond t
he direct reach of current colliders or that only feebly interacts with SM
particles. In this talk\, I will explore how high-intensity searches —
specifically at B-factories and the upcoming Mu2e experiment — are poise
d to revolutionize our understanding of the dark sector and lepton flavor
physics. The talk will also highlight the growing synergy between AI and f
undamental discovery. A compelling solution to the dark matter puzzle lies
in a “dark sector” of particles that are neutral under SM forces. Low
-energy\, high-intensity colliders like BaBar (at SLAC) or Belle and Belle
II (in Japan) provide a unique laboratory for these searches. I will disc
uss recent world-leading results from BaBar and how advanced machine learn
ing architectures are essential for identifying rare dark sector signature
s. Plans to utilize Belle II to leverage a rapidly growing dataset to expl
ore mesogenesis\, dark photons\, axion-like particles (ALPs)\, and heavy n
eutral lepton (HNL) scenarios at unprecedented sensitivities will also be
presented. Furthermore\, I will detail the status of the Mu2e experiment a
t Fermilab\, which seeks to observe the coherent\, neutrino-less conversio
n of a muon into an electron. This process represents a clear signal of ch
arged lepton flavor violation (CLFV)\, unobservably suppressed in the SM.
As Mu2e prepares for its first physics run in 2027\, I will highlight the
on-going preparations for physics analysis including deployment of AI-driv
en particle identification and background characterization. These tools ar
e enabling Mu2e to probe effective mass scales up to 10\,000 TeV.\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/28/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Shawn Dubey (Department of Physics\, Brown University)
DTSTART:20260219T220000Z
DTEND:20260219T230000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/29
DESCRIPTION:Title: A Tour of Tools\, Trends\, and Tradeoffs in Machine Learning
for High Energy Physics\nby Shawn Dubey (Department of Physics\, Brow
n University) as part of University of Mississippi Physics and Astronomy C
olloquium\n\nLecture held in Lewis 101.\n\nAbstract\nMachine Learning (ML)
has advanced rapidly over the past decade\, transforming the way data-int
ensive sciences are conducted. High energy physics is distinctive among th
e physical sciences in its early adoption and deployment of new ML methods
\, driven by extreme data volumes\, complex event structures\, and stringe
nt real-time constraints. In this talk\, I will trace the evolution of the
se approaches through my own research trajectory\, beginning with the use
of multilayer perceptrons and physics-motivated feature engineering\, and
progressing toward modern techniques that emphasize data curation\, weak s
upervision\, and hardware-software co-design of ML algorithms. I will high
light cutting edge methods and how they arise from the interaction between
models\, data\, and experimental constraints\, and how this perspective i
nforms future research directions.\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/29/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Frank Meier (Vossen Group\, Duke University)
DTSTART:20260226T220000Z
DTEND:20260226T230000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/30
DESCRIPTION:Title: Precision Flavor Physics in the Era of Artificial Intelligen
ce\nby Frank Meier (Vossen Group\, Duke University) as part of Univers
ity of Mississippi Physics and Astronomy Colloquium\n\nLecture held in Lew
is 101.\n\nAbstract\nThe Standard Model of particle physics (SM) is a powe
rful theoretical framework. However\, many fundamental questions like the
explanation for the large matter-antimatter asymmetry observed in today's
universe remain unanswered. Precision measurements and indirect searches o
ffer a promising path to uncover new insights and potential signs of physi
cs beyond the SM. Recent advances in computational techniques now allow us
to exploit the large experimental datasets more effectively\, reaching un
precedented levels of precision. In my talk\, I will discuss how machine l
earning is reshaping these precision measurements in flavor physics\, with
a focus on semileptonic decays of heavy mesons. These decays play a centr
al role in determining fundamental parameters of the Standard Model and in
probing possible violations of lepton flavor universality. I will describ
e how machine-learning-based reconstruction and classification methods dra
matically improve signal efficiency and background suppression compared to
traditional approaches. Using examples from my work at the Belle II exper
iment\, I will show how these techniques have enabled more precise measure
ments. Finally\, I will discuss how these methods generalize beyond flavor
physics and outline future opportunities for applying modern AI tools to
a wide range of data-intensive problems across experimental physics.here t
he particles are significantly accelerated by the dissipation of the magne
tic field associated to a possible reconnection manifestation.\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/30/
END:VEVENT
BEGIN:VEVENT
SUMMARY:-
DTSTART:20260505T210000Z
DTEND:20260505T220000Z
DTSTAMP:20260715T053607Z
UID:UMissPhysAstroColloq/31
DESCRIPTION:Title: No colloquium - Final Exam Week\nby - as part of Univers
ity of Mississippi Physics and Astronomy Colloquium\n\nLecture held in Lew
is 101.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UMissPhysAstroColloq/31/
END:VEVENT
END:VCALENDAR