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SUMMARY:Roberto Longo (Roma "Tor Vergata")
DTSTART:20210311T160000Z
DTEND:20210311T173000Z
DTSTAMP:20260423T021245Z
UID:AQFP/8
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/AQFP/8/">The
  massive modular Hamiltonian</a>\nby Roberto Longo (Roma "Tor Vergata") as
  part of Analysis\, Quantum Fields\, and Probability\n\n\nAbstract\nA solu
 tion of the Klein-Gordon equation can be viewed as a signal carried by a c
 lassical wave packet\, or as the wave function of a quantum particle\, or 
 as a coherent state in Quantum Field Theory. Our recent work concerns the 
 definition\, computation and interpretation of the local entropy of this o
 bject and its relation to quantum energy inequalities. The Operator Algebr
 aic approach\, in particular the Tomita-Takesaki modular theory\, provides
  a natural framework and powerful methods for our analysis. In this talk\,
  I will discuss part of the general ground for our analysis and some key r
 esults\, in particular the solution of an old problem in QFT: the descript
 ion of the modular Hamiltonian associated with a space ball B in the free 
 scalar massive QFT\; this sets up the formula for the entropy density of a
  real wave packet.\n
LOCATION:https://researchseminars.org/talk/AQFP/8/
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