Speaker
Jaeok Yi
(KAIST)
Description
We introduce the gauged quintessence model, in which the dark energy field (quintessence) has a $U(1)$ gauge symmetry. This is a kind of realization of 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 boson. It brings interesting characters to dark energy physics. The $U(1)$ gauge boson can affect the quintessence dynamics, and the solicited dark energy properties can constrain the gauge coupling constant. While the uncoupled quintessence model severely suffers from the Hubble tension, the gauged quintessence might alleviate the situation.
| Secondary category for the parallel session (optional) | Cosmology |
|---|
Primary authors
Hye-Sung Lee
(KAIST)
Jaeok Yi
(KAIST)
Jiheon Lee
(KAIST)
kunio kaneta
(Tokyo Woman's Christian University)
