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2021 Fall KIAS HEP Seminar Series

Festina-Lente Bound on Higgs Vacuum Structure and Inflation

by Prof. Seongchan Park (Yonsei U. & KIAS)

Asia/Seoul
1423 (KIAS Building 1)

1423

KIAS Building 1

Description

Title: Festina-Lente Bound on Higgs Vacuum Structure and Inflation

Speaker: Prof. Seongchan Park (Yonsei U. & KIAS)

Abstract: The recently suggested Festina-Lente (FL) bound provides a lower bound on the masses of  U(1) charged particles in terms of the positive vacuum energy. Since the charged particle masses in the Standard Model (SM) are generated by the Higgs mechanism, the FL bound provides a testbed of consistent Higgs potentials in the current dark energy-dominated universe as well as during inflation. We study the implications of the FL bound on the UV behavior of the Higgs potential for a miniscule vacuum energy, as in the current universe. We also present values of the Hubble parameter and the Higgs vacuum expectation value allowed by the FL bound during inflation, which implies that the Higgs cannot stay at the electroweak scale during this epoch.

Videoconference
[Seminar] Seongchan Park
Zoom Meeting ID
89680427456
Host
KIAS HEP-PH Organizer
Passcode
18945622
Zoom URL