Gravitational memory effects in Chern-Simons modified gravity
arXiv:2109.04238 · doi:10.1103/PhysRevD.105.024025
Abstract
The gravitational memory effects of Chern-Simons modified gravity are considered in the asymptotically flat spacetime. If the Chern-Simons scalar does not directly couple with the ordinary matter fields, there are also displacement, spin and center-of-mass memory effects as in general relativity. This is because the term of the action that violates the parity invariance is linear in the scalar field but quadratic in the curvature tensor. This results in the parity violation occuring at the higher orders in the inverse luminosity radius. The scalar field does not induce any new memory effects that can be detected by interferometers or pulsar timing arrays. The asymptotic symmetry is group is also the extended Bondi-Metzner-Sachs group. The constraints on the memory effects excited by the tensor modes are obtained.
13 pages, 0 figure. To be published in PRD
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- Fundamental Physics and Cosmology with TianQin
- Gravitational-wave memory effects in the Damour-Esposito-Farèse extension of Brans-Dicke theory
- Signatures of Quantum Gravity in Gravitational Wave Memory
- Signatures of asymmetry: Gravitational wave memory and the parity violation
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- Shaving off soft hairs and the black hole image memory effect
- Gravitational wave memory in wormhole spacetimes