Gauged quintessence : dark energy with gauge symmetry

Nov 15, 2023, 3:50 PM
20m
The Suites Hotel, Jeju Island, Korea

The Suites Hotel, Jeju Island, Korea

67 Jungmungwangwang-ro 72beon-gil, 특별자치도, Seogwipo-si, Jeju-do

Speaker

Jiheon Lee (Korea Advanced Institute of Science and Technology)

Description

We introduce the gauged quintessence model, in which the dark energy field (quintessence) has a U(1) gauge symmetry. We identify the real part of the complex scalar as the dark energy field (quintessence), while the imaginary 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.

Primary author

Jiheon Lee (Korea Advanced Institute of Science and Technology)

Presentation materials