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SUMMARY:On vacuum decay catalyzed by (evaporating) black holes
DTSTART;VALUE=DATE-TIME:20260709T030000Z
DTEND;VALUE=DATE-TIME:20260709T040000Z
DTSTAMP;VALUE=DATE-TIME:20260708T104600Z
UID:indico-event-5153@indico-tdli.sjtu.edu.cn
DESCRIPTION:Speakers: Kohei Kamada (Hangzhou Institute for Advanced Study\
 , University of Chinese Academy of Sciences)\n\nAbstract:Vacuum decay is o
 ne of the hottest topics in cosmology and particle physics\, because now i
 t is one of the promising phenomena to generate detectable gravitational w
 ave background. Recently there is a claim that a small black hole may cata
 lyze the vacuum decay to enhance its rate extremely\, which can change the
  several scenarios of the cosmological phase transitions. Cosmological sce
 narios with primordial black holes may change our prospect of the GW detec
 tion\, and moreover\, they may lead to the catastrophe of our Universe. If
  this is the case\, such scenarios are strongly constrained.Therefore\, it
  is important to examine if such an enhancement of vacuum decay rate reall
 y takes place.In this talk\, I will explain how such an enhancement of vac
 uum decay is pointed out\,possible problems in the discussion that can cha
 nge the conclusion\,and trials to overcome these problems.Biography:Kohei 
 Kamada is a distinguished researcher at Hangzhou Institute for Advanced St
 udy\, University of Chinese Academy of Sciences. He received his Ph.D from
  the University of Tokyo in 2011 and has worked at Deutsches Elektronen-Sy
 nchrotron (DESY)\,Ecole Polytechnique Fédérale de Lausanne (EPFL)\, Ariz
 ona State University\, and Institute for Basic Science as a postdoc. From 
 2018 to 2023\, he has worked at the University of Tokyo as an Assistant Pr
 ofessor before joining HIAS .His research interest centers on the early Un
 iverse cosmology and particle phenomenology. His works also include theore
 tical consistency of Higgs inflation and baryogenesis from magnetic fields
 .Alternative online link: https://meeting.tencent.com/dm/a2oZdzIj872uID: 4
 34169338\n\nhttps://indico-tdli.sjtu.edu.cn/event/5153/
LOCATION:Tsung-Dao Lee Institute/N6F-N600 - Lecture Room (Tsung-Dao Lee In
 stitute)
URL:https://indico-tdli.sjtu.edu.cn/event/5153/
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