Dynamical Black Hole Thermodynamics in Modified Gravity
Fuente:
arXiv
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Preprint |
| Published: |
2026
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866910102791913472 |
|---|---|
| author | Lobos, Nikko John Leo S. Rodulfo, Emmanuel T. |
| author_facet | Lobos, Nikko John Leo S. Rodulfo, Emmanuel T. |
| contents | We study the dynamical and thermodynamic evolution of a Schwarzschild black hole in Modified Gravity (MOG) under a scalar gravitational wave breathing mode. The time-dependent apparent horizon reveals that both the scalar strain velocity and the repulsive vector charge modulate the effective surface gravity and the instantaneous dynamical temperature in a quasi-adiabatic way. As a result, this regime breaks the semiclassical adiabatic approximation and triggers explicit non-thermal particle creation. We resolve a thermodynamic paradox by decoupling first-order reversible kinematic-horizon fluctuations from second-order irreversible entropy growth, using the Raychaudhuri equation. Consequently, the Generalized Second Law remains preserved. We apply these results to address the black hole information paradox across two timescales. Short-term non-thermal emission opens a dynamical channel for the escape of correlated geometric information. On long timescales, the massive vector field halts evaporation as mass approaches the extremal bound, $M_G \to Q_G$. This yields a stable, zero-temperature remnant. These signals provide a framework for probing scalar-tensor-vector modifications to general relativity with next-generation gravitational-wave observatories |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_03518 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Dynamical Black Hole Thermodynamics in Modified Gravity Lobos, Nikko John Leo S. Rodulfo, Emmanuel T. General Relativity and Quantum Cosmology We study the dynamical and thermodynamic evolution of a Schwarzschild black hole in Modified Gravity (MOG) under a scalar gravitational wave breathing mode. The time-dependent apparent horizon reveals that both the scalar strain velocity and the repulsive vector charge modulate the effective surface gravity and the instantaneous dynamical temperature in a quasi-adiabatic way. As a result, this regime breaks the semiclassical adiabatic approximation and triggers explicit non-thermal particle creation. We resolve a thermodynamic paradox by decoupling first-order reversible kinematic-horizon fluctuations from second-order irreversible entropy growth, using the Raychaudhuri equation. Consequently, the Generalized Second Law remains preserved. We apply these results to address the black hole information paradox across two timescales. Short-term non-thermal emission opens a dynamical channel for the escape of correlated geometric information. On long timescales, the massive vector field halts evaporation as mass approaches the extremal bound, $M_G \to Q_G$. This yields a stable, zero-temperature remnant. These signals provide a framework for probing scalar-tensor-vector modifications to general relativity with next-generation gravitational-wave observatories |
| title | Dynamical Black Hole Thermodynamics in Modified Gravity |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2604.03518 |