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X-WR-TIMEZONE;VALUE=TEXT:Europe/Zurich
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DTSTAMP:20260914T184006Z
UID:8b14ad40-3b57-4ece-9b03-3ebf0e7f592f
DTSTART:20260915T104500
DTEND:20260915T120000
DESCRIPTION:Baryogenesis is a mechanism that generates the matter-antimatte
 r asymmetry of the Universe through dynamical processes. For the asymmetry
  to be generated and preserved\, the dynamical processes must be out of th
 ermal equilibrium. Focusing on one particular mechanism—Electroweak Bary
 ogenesis—the baryon asymmetry is generated through a first-order electro
 weak phase transition\, where expanding bubbles of the broken phase intera
 ct with the surrounding plasma. Predicting the resulting baryon asymmetry 
 therefore requires understanding both bubble wall dynamics and wall–plas
 ma interactions\, both of which are intrinsically non-equilibrium dynamics
 . Conventional calculations taking the out-of-equilibrium effects into acc
 ount are convoluted and computationally demanding\, while studies haven sh
 own that the bubble wall dynamics are dominantly controlled by the local t
 hermal equilibrium (LTE) effects. In this talk\, I will present a simplifi
 ed framework for computing the bubble wall velocity in the LTE approximati
 on. For the generation of CP and baryon asymmetries\, however\, genuinely 
 out-of-equilibrium dynamics are essential. Motivated by advances in quantu
 m simulation\, I will also present our first steps toward a real-time desc
 ription of fermion scattering from a bubble wall—the microscopic source 
 of CP asymmetry in electroweak baryogenesis. Using tensor network methods 
 as a proxy for future fault-tolerant quantum simulations\, this approach p
 rovides a complementary route toward studying baryogenesis directly in rea
 l time.\n
LOCATION:UZH Irchel Y35 F-51
ORGANIZER:Tong Ou
SUMMARY:Baryogenesis Computation — from LTE to Real-Time Dynamics
URL;VALUE=URI:https://www.physik.uzh.ch/en/seminars/ttpseminar/HS2026.html
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