https://doi.org/10.1140/epjp/s13360-026-07656-y
Regular Article
Spin effects on particle creation and evaporation in f(R, T) gravity
1
Departamento de Física, Universidade Federal da Paraíba, 58051-970, João Pessoa, Paraíba, Brazil
2
Departamento de Física, Universidade Federal de Campina Grande, 58429-900, Campina Grande, Paraíba, Brazil
3
Center for Theoretical Physics, Khazar University, 41 Mehseti Street, 1096, Baku, Azerbaijan
4
School of Physics, Damghan University, 3671641167, Damghan, Iran
5
Faculdade de Ciências da Universidade de Lisboa, Instituto de Astrofísica e Ciências do Espaço, Edifício C8, Campo Grande, 1749-016, Lisbon, Portugal
6
Departamento de Física, Faculdade de Ciências da Universidade de Lisboa, Edifício C8, Campo Grande, 1749-016, Lisbon, Portugal
a
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Received:
20
February
2026
Accepted:
2
April
2026
Published online:
24
April
2026
Abstract
In this work, we study how the spin of particle modes influences particle creation, greybody factors, absorption, and evaporation of a black hole within the framework of modified electrodynamics in f(R, T) gravity, recently proposed in Róis et al. (Phys Rev D 111(12):124044, 2025). All spin sectors-scalar, vector, tensor, and spinorial-are analyzed to obtain the corresponding features. For particle creation, we consider massless bosonic and fermionic perturbations to determine the respective particle densities. Analytical expressions for the greybody factors are derived, with suitable approximations for the tensor and spinorial cases. The absorption cross section is computed numerically, and using the Stefan–Boltzmann law, we estimate the black hole evaporation lifetime. The associated energy and particle emission rates are also discussed, along with the correspondence between quasinormal modes and greybody factors.
© The Author(s) 2026
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