426 citations · 1.9k across the 35 of their papers we have counts for
4 papers · 1 filter
"Teleparallel" Dark Energy
Chao-Qiang Geng, Chung-Chi Lee, Emmanuel N. Saridakis +1
Using the "teleparallel" equivalent of General Relativity as the gravitational sector, which is based on torsion instead of curvature, we add a canonical scalar field, allowing for…
Observational Constraints on Teleparallel Dark Energy
Chao-Qiang Geng, Chung-Chi Lee, Emmanuel N. Saridakis
We use data from Type Ia Supernovae (SNIa), Baryon Acoustic Oscillations (BAO), and Cosmic Microwave Background (CMB) observations to constrain the recently proposed teleparallel d…
Phantom crossing in viable theories
Kazuharu Bamba, Chao-Qiang Geng, Chung-Chi Lee
We review the equation of state for dark energy in modified gravity theories. In particular, we summarize the generic feature of the phantom divide crossing in the past and future…
Gravitational Waves in Viable f(R) Models
Louis Yang, Chung-Chi Lee, Chao-Qiang Geng
We study gravitational waves in viable theories under a non-zero background curvature. In general, an theory contains an extra scalar degree of freedom corresponding…