Self-force effects in post-Minkowskian scattering
Self-force effects in post-Minkowskian scattering
复制标题
后闵可夫斯基散射中的自力效应
DOI:
10.1088/1361-6382/ac5d88
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发表时间:
2022
影响因子:
3.5
通讯作者:
Lobo, Kunal
中科院分区:
文献类型:
--
作者:
Gralla, Samuel E;Lobo, Kunal
We revisit the old problem of the self-force on a particle moving in a weak-field spacetime in the context of renewed interest in two-body gravitational scattering. We analytically calculate the scalar, electromagnetic, and gravitational self-force on a particle moving on a straight-line trajectory at a large distance from a Newtonian star, and use these results to find the associated correction to its motion. In the gravitational case we must also include the matter-mediated force, which acts at the same perturbative order as the gravitational self-force. We further augment the gravitational results with geodesic calculations at second order in the central body mass to determine the full, explicit solution to the two-body gravitational scattering problem at second post-Minkowskian order (2PM). We calculate the momentum transfer (which reproduces Westpfahl's old result), the change in mechanical angular momentum (which matches the radiative flux recently computed by Damour), and the change in mechanical mass moment (the time-space components of the angular momentum tensor), which has not previously appeared. Besides the new 2PM results of explicit trajectories and all conserved quantities, this work clarifies the role of gravitational self-force in PM scattering theory and provides a foundation for higher-order calculations.
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影响因子:
8.6
作者:
N. Bjerrum-Bohr;P. Damgaard;G. Festuccia;L. Planté;P. Vanhove;P. Vanhove
通讯作者:
N. Bjerrum-Bohr;P. Damgaard;G. Festuccia;L. Planté;P. Vanhove;P. Vanhove
影响因子:
5
作者:
Y. Mino;M. Sasaki;Takahiro Tanaka
通讯作者:
Y. Mino;M. Sasaki;Takahiro Tanaka
DOI:
--
发表时间:
2020
期刊:
影响因子:
--
作者:
T. Damour
通讯作者:
T. Damour
DOI:
--
发表时间:
2021
期刊:
影响因子:
--
作者:
Enrico Herrmann;Julio Parra;M. Zeng
通讯作者:
M. Zeng
影响因子:
8.6
作者:
Gregor Kalin;Zhengwen Liu;Rafael A. Porto
通讯作者:
Rafael A. Porto