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SUMMARY:Aninda Sinha (Indian Insititute of Science)
DTSTART:20210125T163000Z
DTEND:20210125T174500Z
DTSTAMP:20260404T132228Z
UID:HET/6
DESCRIPTION:Title: <a href="https://stable.researchseminars.org/talk/HET/6
 /">Entanglement in scattering and the S-matrix bootstrap</a>\nby Aninda Si
 nha (Indian Insititute of Science) as part of Purdue HET\n\n\nAbstract\nI 
 will talk about how relative entropy\, a concept in quantum information th
 eory to distinguish two density matrices\, behaves in 2-2 scattering in qu
 antum field theory\, string theory\, chiral perturbation theory and the nu
 merical S-matrix bootstrap. In the context of massive quantum field theori
 es\, I will derive high energy bounds on relative entropy as well as study
  the Regge behavior. Then I will turn to the S-matrix bootstrap. I will gi
 ve a broad overview of what this program is about and how to constrain pio
 n scattering with it. Here\, some insight from relative entropy will prove
  to be handy to constrain the space of S-matrices. I will discuss some ide
 as based on minimization of total scattering cross-section to constrain pi
 on S-matrices further\; curious coincidences such as boundary of allowed S
 -matrices being close to the Lovelace-Shapiro model of early string theory
 \, emerging linear Regge trajectories\, as well as reduction in Entangleme
 nt power near the standard model point will be discussed.\n
LOCATION:https://stable.researchseminars.org/talk/HET/6/
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