3 papers
gr-qc2025
Adiabatic and point-splitting regularization of spin-1/2 field in de Sitter space
Xuan Ye, Yang Zhang
We study the regularization of a spin-1/2 fieldin the vacuum state in de Sitter space. We find that the 2nd order adiabatic regularization is sufficient to remove all UV divergence…
gr-qc2025
The Conserved Effective Stress Tensor of Gravitational Wave
Yang Zhang, Xuan Ye
We present a detailed study of the effective stress tensor of gravitational wave (GW) as the source for the background Einstein equation and examine three candidates in literature.…
gr-qc2025
Regularized stress tensor of vector fields in de Sitter space
Yang Zhang, Xuan Ye
We study the Stueckelberg field in de Sitter space, which is a massive vector field with the gauge fixing (GF) term . We obtain the vacuum stress…