10 papers
Scalar-induced gravitational waves from inflation with symmetry breaking
Chong-Bin Chen, Jia-Xi Feng, Fu-Wen Shu +1
We investigate scalar-induced gravitational waves (SIGWs) in an inflationary model with symmetry breaking, in which charged scalar fields are coupled to an isotropic triplet of Abe…
Circularly polarized gravitational waves from parity-violating scalar-tensor theory
Jia-Xi Feng, Jia-Yuan Fang, Xian Gao
We study both primordial gravitational waves (GWs) and scalar-induced gravitational waves (SIGWs) in a class of the parity-violating scalar-tensor (PVST) theory, of which the Lagra…
Scalar induced gravitational waves in chiral scalar-tensor theory of gravity
Jia-Xi Feng, Fengge Zhang, Xian Gao
We study the scalar induced gravitational waves (SIGWs) from a chiral scalar-tensor theory of gravity. The parity-violating (PV) Lagrangian contains the Chern-Simons (CS) term and…
Scalar induced gravitational waves in metric teleparallel gravity with the Nieh-Yan term
Fengge Zhang, Jia-Xi Feng, Xian Gao
We investigate the scalar induced gravitational waves (SIGWs) in metric teleparallel gravity with the Nieh-Yan (NY) term, which results in parity violation during the radiation-dom…
Scalar induced gravitational waves in symmetric teleparallel gravity with a parity-violating term
Fengge Zhang, Jia-Xi Feng, Xian Gao
Gravitational waves (GWs) are useful to test gravitational theories and to probe the physics in the early universe. In this paper, we investigate the scalar induced gravitational w…
Scalar induced gravitational waves from Chern-Simons gravity during inflation era
Jia-Xi Feng, Fengge Zhang, Xian Gao
We investigate the scalar induced gravitational waves (SIGWs) in the Chern-Simons (CS) gravity with a dynamical scalar field during slow roll inflation. Due to the parity violation…