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Linear and Second-order Geometry Perturbations on Spacetimes with Torsion. (arXiv:1901.06400v2 [gr-qc] UPDATED)
来源于:arXiv
In order to study gravitational waves in any realistic astrophysical
scenario, one must consider geometry perturbations up to second order. Here, we
present a general technique for studying linear and quadratic perturbations on
a spacetime with torsion. Besides the standard metric mode, a "torsionon"
perturbation mode appears. This torsional mode will be able to propagate only
in a certain kind of theories. 查看全文>>