15 citations · 15 across the 1 of their papers we have counts for
6 papers
A massless scalar field in Robertson-Walker spacetimes: Adiabatic regularization and Green's function
Yang Zhang, Bo Wang, Xuan Ye
We study adiabatic regularization of a coupling massless scalar field in general spatially flat Robertson-Walker (RW) spacetimes. For the conformally-coupling, the 0th-order regula…
Second-order cosmological perturbations. IV. Produced by scalar-tensor and tensor-tensor couplings during the radiation dominated stage
Bo Wang, Yang Zhang
We continue to study the 2nd-order cosmological perturbations in synchronous coordinates in the framework of the general relativity (GR) during the radiation dominated (RD) stage,…
Adiabatic regularization and Green's function of a scalar field in de Sitter space: Positive energy spectrum and no trace anomaly
Yang Zhang, Xuan Ye, Bo Wang
In the conventional adiabatic regularization the vacuum ultraviolet divergences of a quantum field in curved spacetime are removed by subtracting the -mode of the stress tensor…
Second-order cosmological perturbations. III. Produced by scalar-scalar coupling during radiation-dominated stage
Bo Wang, Yang Zhang
We study the 2nd-order scalar, vector and tensor metric perturbations in Robertson-Walker (RW) spacetime in synchronous coordinates during the radiation dominated (RD) stage. The d…
Estimation of spectrum and parameters of relic gravitational waves using space-borne interferometers
Bo Wang, Yang Zhang
We present a study of spectrum estimation of relic gravitational waves (RGWs) as a Gaussian stochastic background from output signals of future space-borne interferometers, like LI…
Adiabatic regularization of power spectrum and stress tensor of relic gravitational wave without low-frequency distortion
Yang Zhang, Bo Wang
Adiabatic regularization is a method to remove UV divergences in quantum fields in curved spacetime. For relic gravitational wave generated during inflation, regularization on all…