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BEGIN:VEVENT
SUMMARY:Luca Visinelli (GRAPPA\, University of Amsterdam\, Netherlands)
DTSTART:20200429T150000Z
DTEND:20200429T160000Z
DTSTAMP:20260422T225721Z
UID:lawphysics/1
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/lawphysics/1
 /">Astrophysics with axion miniclusters and axion stars</a>\nby Luca Visin
 elli (GRAPPA\, University of Amsterdam\, Netherlands) as part of Latin Ame
 rican Webinars on Physics (LAWPhysics)\n\n\nAbstract\nAxions and axion-lik
 e particles are excellent dark matter candidates\, spanning a vast range o
 f mass scales from the milli- and micro-eV for the QCD axion\, to 10^-22eV
  for ultralight axions\, to even lighter candidates that make up the “ax
 iverse”. In some scenarios\, inhomogeneities in the axion density lead t
 o the formation of compact structures known as axion “miniclusters” an
 d axion stars. Topological defects in the early universe might also contri
 bute the energy density of axions and generate primordial gravitational wa
 ves that can possibly be detected in future experiments. I will first disc
 uss astrophysical and cosmological constraints on axions at either end of 
 this spectrum\, using data from the cosmic microwave background anisotropi
 es and the effects of miniclusters on the gravitational microlensing and o
 n direct detection. I will then assess the evolution of the hypothetical 
 “axion stars”.\n
LOCATION:https://researchseminars.org/talk/lawphysics/1/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Luca Visinelli (GRAPPA\, University of Amsterdam\, Netherlands)
DTSTART:20200429T150000Z
DTEND:20200429T160000Z
DTSTAMP:20260422T225721Z
UID:lawphysics/2
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/lawphysics/2
 /">Astrophysics with axion miniclusters and axion stars</a>\nby Luca Visin
 elli (GRAPPA\, University of Amsterdam\, Netherlands) as part of Latin Ame
 rican Webinars on Physics (LAWPhysics)\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/lawphysics/2/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Macarena Lagos (University of Chicago)
DTSTART:20200506T150000Z
DTEND:20200506T160000Z
DTSTAMP:20260422T225721Z
UID:lawphysics/3
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/lawphysics/3
 /">Cosmology in the multi-messenger era</a>\nby Macarena Lagos (University
  of Chicago) as part of Latin American Webinars on Physics (LAWPhysics)\n\
 n\nAbstract\nWe have great certainty on how gravity works around our solar
  system\, but on large scales we still have a considerable lack of underst
 anding about the constituents of our universe. Furthermore\, observational
  tensions are starting to arise as we enter the era of precision cosmology
 .\nIn this talk\, I will mention how we can learn more about cosmology wit
 h future gravitational wave data. In particular\, I will focus on the use 
 of standard sirens for testing cosmology beyond the concordance ΛCDM mode
 l. I will show how new physics can change the way gravitational waves prop
 agate and discuss forecasts for binary neutron star mergers with Advanced 
 LIGO. I will show that new physics can bias constraints on the current Hub
 ble rate H0 from standard sirens\, and thus it is crucial that we search f
 or these new effects to make robust predictions on cosmological parameters
 . Finally\, I will discuss the role that lunar laser ranging and binary pu
 lsar data play on the outlook of standard sirens.\n
LOCATION:https://researchseminars.org/talk/lawphysics/3/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Ezequiel Álvarez (International Center for Advanced Science)
DTSTART:20200513T150000Z
DTEND:20200513T160000Z
DTSTAMP:20260422T225721Z
UID:lawphysics/4
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/lawphysics/4
 /">Intelligent Arxiv: Sort daily papers by learning users topics preferenc
 e</a>\nby Ezequiel Álvarez (International Center for Advanced Science) as
  part of Latin American Webinars on Physics (LAWPhysics)\n\n\nAbstract\nCu
 rrent daily paper releases are becoming increasingly large and areas of re
 search are growing in diversity. This makes it harder for scientists to ke
 ep up to date with current state of the art and identify relevant work wit
 hin their lines of interest. The goal of this article is to address this p
 roblem using Machine Learning techniques. We model a scientific paper to b
 e built as a combination of different scientific knowledge from diverse to
 pics into a new problem. In light of this\, we implement the unsupervised 
 Machine Learning technique of Latent Dirichlet Allocation (LDA) on the cor
 pus of papers in a given field to: i) define and extract underlying topics
  in the corpus\; ii) get the topics weight vector for each paper in the co
 rpus\; and iii) get the topics weight vector for new papers. By registerin
 g papers preferred by a user\, we build a user vector of weights using the
  information of the vectors of the selected papers. Hence\, by performing 
 an inner product between the user vector and each paper in the daily Arxiv
  release\, we can sort the papers according to the user preference on the 
 underlying topics.\nWe have created the website IArxiv.org where users can
  read sorted daily Arxiv releases (and more) while the algorithm learns ea
 ch user's preference\, yielding a more accurate sorting every day. Current
  IArxiv.org version runs on Arxiv categories astro-ph\, gr-qc\, hep-ph and
  hep-th and we plan to extend to others. We propose several new useful and
  relevant implementations to be additionally developed as well as new Mach
 ine Learning techniques beyond LDA to further improve the accuracy of this
  new tool.\n
LOCATION:https://researchseminars.org/talk/lawphysics/4/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Lucía Duarte (Universidad de la República)
DTSTART:20200520T150000Z
DTEND:20200520T160000Z
DTSTAMP:20260422T225721Z
UID:lawphysics/5
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/lawphysics/5
 /">Majorana neutrinos with effective interactions in B decays</a>\nby Luc
 ía Duarte (Universidad de la República) as part of Latin American Webina
 rs on Physics (LAWPhysics)\n\n\nAbstract\nWe investigate the possible cont
 ribution of intermediate Majorana neutrinos to B meson decays in an intera
 ction formalism with dim 6 effective operators. We exploit the existing bo
 unds on the lepton number violating  B^- -> mu^-mu^- pi^+  and in the radi
 ative B^- -> mu^- nu gamma   decays  to constrain the new physics contribu
 tions\, characterized by their Dirac-Lorentz structure. We propose studyin
 g tau lepton polarization and lepton-photon angular asymmetries in tauonic
  and radiative B decays at B factories as a means to  evaluate and disenta
 ngle the trails of the distinct effective operators\n
LOCATION:https://researchseminars.org/talk/lawphysics/5/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sean Hartnoll (Stanford)
DTSTART:20200603T160000Z
DTEND:20200603T160000Z
DTSTAMP:20260422T225721Z
UID:lawphysics/7
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/lawphysics/7
 /">Quantum gravity and matrix quantum mechanics.</a>\nby Sean Hartnoll (St
 anford) as part of Latin American Webinars on Physics (LAWPhysics)\n\n\nAb
 stract\nSpace is widely believed to be emergent. That is\, the fundamental
  degrees of freedom in quantum gravity are not geometrical. Due to hologra
 phic duality\, we know that large N matrix quantum mechanics are microscop
 ic models that can lead to an emergent space. However\, in general these m
 odels are difficult to solve and for this reason we don’t really underst
 and how this emergence works. I will describe two recent approaches to sol
 ving large N matrix quantum mechanics\, one uses neural networks\, while t
 he other uses a “bootstrap” approach.\n
LOCATION:https://researchseminars.org/talk/lawphysics/7/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Jose Tomas Galvez Ghersi (University of Mississippi)
DTSTART:20200617T150000Z
DTEND:20200617T160000Z
DTSTAMP:20260422T225721Z
UID:lawphysics/8
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/lawphysics/8
 /">Numerical renormalization group-based approach to secular perturbation 
 theory</a>\nby Jose Tomas Galvez Ghersi (University of Mississippi) as par
 t of Latin American Webinars on Physics (LAWPhysics)\n\n\nAbstract\nThe st
 andard methods of perturbative analysis are crucial to revealing many feat
 ures of a physical system when it is not viable to obtain exact solutions.
  Nevertheless\, the use of a truncated expansion might generate diverging 
 solutions in systems that are known to be bound. Following the perspective
  of secular perturbation theory\, we propose the numerical implementation 
 of a renormalization group-based approach to promote the background parame
 ters into time-dependent quantities. These new quantities are not restrict
 ed only to avoid secular growth\, but can also improve the accuracy of the
  solution. As a concrete example\, we use this method to calculate the sol
 iton-like solutions of the Korteweg-de Vries equation deformed by adding a
  small damping term. This example shares several features with the evaluat
 ion of gravitational waveforms modified by perturbative corrections of gen
 eral relativity.\n
LOCATION:https://researchseminars.org/talk/lawphysics/8/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Carlos Alvarado
DTSTART:20200708T100000Z
DTEND:20200708T120000Z
DTSTAMP:20260422T225721Z
UID:lawphysics/9
DESCRIPTION:by Carlos Alvarado as part of Latin American Webinars on Physi
 cs (LAWPhysics)\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/lawphysics/9/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Paola Ferrario
DTSTART:20200715T100000Z
DTEND:20200715T120000Z
DTSTAMP:20260422T225721Z
UID:lawphysics/10
DESCRIPTION:by Paola Ferrario as part of Latin American Webinars on Physic
 s (LAWPhysics)\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/lawphysics/10/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Rai Weiss (MIT)
DTSTART:20200930T150000Z
DTEND:20200930T160000Z
DTSTAMP:20260422T225721Z
UID:lawphysics/11
DESCRIPTION:by Rai Weiss (MIT) as part of Latin American Webinars on Physi
 cs (LAWPhysics)\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/lawphysics/11/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Kip Thorne (Caltech)
DTSTART:20201111T150000Z
DTEND:20201111T160000Z
DTSTAMP:20260422T225721Z
UID:lawphysics/12
DESCRIPTION:by Kip Thorne (Caltech) as part of Latin American Webinars on 
 Physics (LAWPhysics)\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/lawphysics/12/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Hardi Veermäe (NICPB\, Tallinn)
DTSTART:20201028T150000Z
DTEND:20201028T160000Z
DTSTAMP:20260422T225721Z
UID:lawphysics/13
DESCRIPTION:by Hardi Veermäe (NICPB\, Tallinn) as part of Latin American 
 Webinars on Physics (LAWPhysics)\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/lawphysics/13/
END:VEVENT
BEGIN:VEVENT
SUMMARY:James Stone (IAS)
DTSTART:20220119T150000Z
DTEND:20220119T160000Z
DTSTAMP:20260422T225721Z
UID:lawphysics/14
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/lawphysics/1
 4/">Numerical Models of Black Hole Accretion Flows</a>\nby James Stone (IA
 S) as part of Latin American Webinars on Physics (LAWPhysics)\n\nAbstract:
  TBA\n
LOCATION:https://researchseminars.org/talk/lawphysics/14/
END:VEVENT
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