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SUMMARY:Seminar - Dr. Minxi He (IBS - CTPU)
DTSTART:20260318T050000Z
DTEND:20260318T080000Z
DTSTAMP:20260407T043900Z
UID:indico-event-1@ihepco.yonsei.ac.kr
DESCRIPTION:Revisiting unitarity of single scalar field with non-minimal c
 ouplingAbstract : \nWe have investigated the unitarity violation scale of
  a non-minimally coupled scalar field with quartic self-coupling. This mod
 el is widely studied in the literature but the estimation of the unitarity
  violation scale has not been consistently discussed\, especially in the J
 ordan frame. We have calculated the six-point scattering amplitudes of the
  scalar particles in both the Jordan frame and the Einstein frame\, and ex
 plicitly shown the frame-independence of the results. Since the extended t
 arget space with the conformal mode is trivial in the single-field case\, 
 the dominant contribution comes from the potential of the scalar field. Th
 e results in both frames become trivial in the vanishing self-coupling lim
 it as expected.\n \nPaper : https://arxiv.org/abs/2603.06296\n\nhttps://i
 hepco.yonsei.ac.kr/event/1/
LOCATION:S557 (Yonsei University)
URL:https://ihepco.yonsei.ac.kr/event/1/
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