Yu-Cheng Qiu

activity

20232026

most citedCan we explain cosmic birefringence without a new light field beyond Standard Model?

16 citations · 20 across the 5 of their papers we have counts for

collaborators

Showing 2025Show all

2 papers · 1 filter

hep-ph2025★ 3 cited

High Reheating Temperature without Axion Domain Walls

Shota Nakagawa, Yuichiro Nakai, Yu-Cheng Qiu +2

We investigate a cosmological scenario in which the Peccei-Quinn (PQ) symmetry remains broken in the entire history of the Universe, thereby avoiding the formation of axion strings…

astro-ph.CO2025

Interpreting Cosmic Birefringence and DESI Data with Evolving Axion in $Λ$ CDM

Shota Nakagawa, Yuichiro Nakai, Yu-Cheng Qiu +1

Recent cosmological observations have revealed growing tensions with the standard $Λ$ CDM model, including indications of isotropic cosmic birefringence and deviations from $w = - 1$ …

High Reheating Temperature without Axion Domain Walls

Interpreting Cosmic Birefringence and DESI Data with Evolving Axion in ΛCDM

Interpreting Cosmic Birefringence and DESI Data with Evolving Axion in $Λ$ CDM