Strong equivalence principle and gravitational wave polarizations in Horndeski theory
Abstract The relative acceleration between two nearby particles moving along accelerated trajectories is studied, which generalizes the geodesic deviation equation. The polarization content of the gravitational wave in Horndeski theory is investigated by examining the relative acceleration between t...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2019-03-01
|
| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-019-6684-9 |
| _version_ | 1818542449172152320 |
|---|---|
| author | Shaoqi Hou Yungui Gong |
| author_facet | Shaoqi Hou Yungui Gong |
| author_sort | Shaoqi Hou |
| collection | DOAJ |
| description | Abstract The relative acceleration between two nearby particles moving along accelerated trajectories is studied, which generalizes the geodesic deviation equation. The polarization content of the gravitational wave in Horndeski theory is investigated by examining the relative acceleration between two self-gravitating particles. It is found out that the apparent longitudinal polarization exists no matter whether the scalar field is massive or not. It would be still very difficult to detect the enhanced/apparent longitudinal polarization with the interferometer, as the violation of the strong equivalence principle of mirrors used by interferometers is extremely small. However, the pulsar timing array is promised relatively easily to detect the effect of the violation as neutron stars have large self-gravitating energies. The advantage of using this method to test the violation of the strong equivalence principle is that neutron stars are not required to be present in the binary systems. |
| first_indexed | 2024-12-11T22:22:13Z |
| format | Article |
| id | doaj.art-481b4819001c4149ad24b4ba2986d6af |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-11T22:22:13Z |
| publishDate | 2019-03-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-481b4819001c4149ad24b4ba2986d6af2022-12-22T00:48:24ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522019-03-0179311210.1140/epjc/s10052-019-6684-9Strong equivalence principle and gravitational wave polarizations in Horndeski theoryShaoqi Hou0Yungui Gong1School of Physics, Huazhong University of Science and TechnologySchool of Physics, Huazhong University of Science and TechnologyAbstract The relative acceleration between two nearby particles moving along accelerated trajectories is studied, which generalizes the geodesic deviation equation. The polarization content of the gravitational wave in Horndeski theory is investigated by examining the relative acceleration between two self-gravitating particles. It is found out that the apparent longitudinal polarization exists no matter whether the scalar field is massive or not. It would be still very difficult to detect the enhanced/apparent longitudinal polarization with the interferometer, as the violation of the strong equivalence principle of mirrors used by interferometers is extremely small. However, the pulsar timing array is promised relatively easily to detect the effect of the violation as neutron stars have large self-gravitating energies. The advantage of using this method to test the violation of the strong equivalence principle is that neutron stars are not required to be present in the binary systems.http://link.springer.com/article/10.1140/epjc/s10052-019-6684-9 |
| spellingShingle | Shaoqi Hou Yungui Gong Strong equivalence principle and gravitational wave polarizations in Horndeski theory European Physical Journal C: Particles and Fields |
| title | Strong equivalence principle and gravitational wave polarizations in Horndeski theory |
| title_full | Strong equivalence principle and gravitational wave polarizations in Horndeski theory |
| title_fullStr | Strong equivalence principle and gravitational wave polarizations in Horndeski theory |
| title_full_unstemmed | Strong equivalence principle and gravitational wave polarizations in Horndeski theory |
| title_short | Strong equivalence principle and gravitational wave polarizations in Horndeski theory |
| title_sort | strong equivalence principle and gravitational wave polarizations in horndeski theory |
| url | http://link.springer.com/article/10.1140/epjc/s10052-019-6684-9 |
| work_keys_str_mv | AT shaoqihou strongequivalenceprincipleandgravitationalwavepolarizationsinhorndeskitheory AT yunguigong strongequivalenceprincipleandgravitationalwavepolarizationsinhorndeskitheory |