2024 CAU-PNU Beyond the Standard Model Workshop

Session

Inflation

22 Feb 2024, 11:00

Centennial 310-B502 (Chung-Ang University)

30. Euclidean wormholes and the origin of alpha-vacua

Prof. Dong-han Yeom (Asia Pacific Center for Theoretical Physics)

22/02/2024, 11:00

We investigate Euclidean wormholes and their cosmological implications. Generically it was known that the Euclidean compact instantons explain the Bunch-Davies vacuum. If we make the assumption weeker and consider the Euclidean wormholes, we have the freedom to choose another vacuum condition. If we impose the de Sitter invariance condition, we can conclude that the Euclidean wormholes can be...

31. Gauged Quintessence

Jaeok Yi (KAIST)

22/02/2024, 11:30

We introduce the gauged quintessence model, in which the dark energy field (quintessence) has a gauge symmetry. This is a kind of realization of the interacting quintessence model and the first quintessence model under a gauge symmetry. We identify the radial part of the complex scalar as the dark energy field (quintessence), while the angular part is the longitudinal component of a new gauge...

32. Non gravitational signals of dark energy under a gauge symmetry

Jiheon Lee (KAIST)

22/02/2024, 11:50

We investigate non-gravitational signals of dark energy within the framework of gauge symmetry in the dark energy sector. Traditionally, dark energy has been primarily studied through gravitational effects within general relativity or its extensions. On the other hand, the gauge principles have played a central role in the standard model sector and dark matter sector. If the dark energy field...