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SUMMARY:Entanglement entropy is elastic cross section
DTSTART;VALUE=DATE-TIME:20241203T020000Z
DTEND;VALUE=DATE-TIME:20241203T040000Z
DTSTAMP;VALUE=DATE-TIME:20260418T012121Z
UID:indico-event-295@indico.itp.ac.cn
DESCRIPTION:Abstract:\n\n\nI will present universal relations between the 
 cross section\, which is the primary observable for high energy particle s
 cattering\, and entanglement entropy\, which quantifies the quantumness of
  the process. A careful formulation of incoming wave packets is essential 
 to uncover these relations. We show that for 2-particle scattering with no
  initial entanglement\, the entanglement entropy for elastic final states 
 is the elastic cross section in the unit of the transverse size for the in
 itial wave packets\, which can be alternatively interpreted as the elastic
  scattering probability. This statement does not depend on details of the 
 local dynamics\, and is valid to all orders in coupling strength. Furtherm
 ore\, different ways to partition the system of the two particles lead to 
 final state entanglement entropy expressed as different kinds of semi-incl
 usive elastic cross sections. Our results imply a version of an area law f
 or entanglement entropy of a two-body system.\n\nBio:\n\n\nDr Zhewei Yin o
 btained his BSc degree in 2015 at Peking University\, China\, and his PhD 
 degree in 2020 at Northwestern University\, USA. He then became a postdoct
 oral researcher at Uppsala University\, Sweden\, after which he has been h
 olding a joint appointment as a postdoctoral fellow at Northwestern Univer
 sity and Argonne National Laboratory\, USA. He works in the field of theor
 etical high energy physics\, with a focus on discovering new properties an
 d developing modern methods in scattering amplitudes and effective field t
 heories\, as well as connecting these formal development to particle pheno
 menology\, gravitational wave physics and quantum information science.\n\n
 https://indico.itp.ac.cn/event/295/
LOCATION:online
URL:https://indico.itp.ac.cn/event/295/
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