4D Einstein-Gauss-Bonnet gravity: Massless particles and absorption of planar spin-0 waves
- Resource Type
- Authors
- Carolina L. Benone; Luís C. B. Crispino; Haroldo C. D. Lima Junior
- Source
- Physics Letters
Physics Letters B, Vol 811, Iss, Pp 135921-(2020)
- Subject
- Physics
Coupling constant
Nuclear and High Energy Physics
010308 nuclear & particles physics
Scalar (mathematics)
Absorption cross section
FOS: Physical sciences
General Relativity and Quantum Cosmology (gr-qc)
01 natural sciences
lcsh:QC1-999
General Relativity and Quantum Cosmology
Gravitation
Massless particle
Gauss–Bonnet gravity
Quantum electrodynamics
0103 physical sciences
010306 general physics
Absorption (electromagnetic radiation)
lcsh:Physics
Spin-½
- Language
- English
We investigate the absorption cross section of planar scalar massless waves impinging on spherically symmetric black holes which are solutions of the novel 4D Einstein-Gauss-Bonnet theory of gravity. Besides the mass of the black hole, the solution depends also on the Gauss-Bonnet constant coupling. Using the partial waves approach, we show that the absorption cross section depends on the Gauss-Bonnet coupling constant. Our numerical results present excellent agreement with the low- and high- frequency approximations, including the so-called sinc approximation.
Comment: Published in Physics Letters B