Infrared features of gravitational scattering and radiation in the eikonal approach
TLDR
In this article, the infrared features of gravitational scattering and radiation in four space-time dimensions are investigated, and the authors illustrate the factorization and cancellation of the infinite Coulomb phase for scattering and the eikonal resummation for radiation.Abstract:
Following a semiclassical eikonal approach—justified at transplanckian energies order by order in the deflection angle Θs∼4Gsb≡2Rb—we investigate the infrared features of gravitational scattering and radiation in four space-time dimensions, and we illustrate the factorization and cancellation of the infinite Coulomb phase for scattering and the eikonal resummation for radiation. As a consequence, both the eikonal phase 2δ(E,b) and the gravitational-wave (GW) spectrum dEGWdω are free from infrared problems in a frequency region extending from zero to (and possibly beyond) ω=1/R. The infrared-singular behavior of 4-D gravity leaves a memory in the deep infrared region (ωR≪ωb<1) of the spectrum. At O(ωb) we confirm the presence of logarithmic enhancements of the form already pointed out by Sen and collaborators on the basis of nonleading corrections to soft-graviton theorems. These, however, do not contribute to the unpolarized and/or azimuthally averaged flux. At O(ω2b2) we find instead a positive logarithmically enhanced correction to the total flux implying an unexpected maximum of its spectrum at ωb∼0.5. At higher orders we find subleading enhanced contributions as well, which can be resummed, and have the interpretation of a finite rescattering Coulomb phase of emitted gravitons.read more
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Black Hole Binary Dynamics from the Double Copy and Effective Theory
TL;DR: In this article, a systematic framework for computing the conservative potential of a compact binary system using modern tools from scattering amplitudes and effective field theory is described, combining methods for integration and matching adapted from effective field theories, generalized unitarity, and the double-copy construction, which relates gravity integrands to simpler gauge-theory expressions.
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High Energy Physics
TL;DR: High Energy Physics Vol 1 Edited by E H S Burhop (Pure and Applied Physics; a Series of Monographs and Textbooks Vol 25) Pp xi + 499 (New York: Academic Press, Inc; London: Academic Publications, Inc (London, Ltd, 1967) 176s as mentioned in this paper.
Asymptotic condition and infrared divergences in quantum electrodynamics
TL;DR: In this article, a lecture is given on a paper by P Kulish and L. D. Faddeev Theor. Math. Phys. 4, 153 (1970).
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Revisiting the second post-Minkowskian eikonal and the dynamics of binary black holes
TL;DR: In this paper, the two-body gravitational scattering of massive scalars with different masses in general spacetime dimensions was studied, focusing on the Regge limit (eikonal regime) of the resulting scattering.
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Tidal Effects in the Post-Minkowskian Expansion.
Clifford Cheung,Mikhail P. Solon +1 more
TL;DR: The leading and, for the first time, next-to-leading order post-Minkowskian finite size corrections to the conservative Hamiltonian, together with their associated scattering amplitudes and scattering angles are computed.
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Particle Creation by Black Holes
TL;DR: In this article, it is shown that quantum mechanical effects cause black holes to create and emit particles as if they were hot bodies with temperature, which leads to a slow decrease in the mass of the black hole and to its eventual disappearance.
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GW170817: observation of gravitational waves from a binary neutron star inspiral
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