Thermodynamics and Multi-Horizon Solutions in Quartic Quasitopological Gravity: A Power-Maxwell Approach

Document Type : Research Paper

Authors

1 Department of Physics, Jahrom University, Jahrom, P.O. Box 74137-66171, Iran

2 Department of Physics, Payame Noor University (PNU), P.O. Box 19395-3697, Tehran, Iran

Abstract

We derive exact black hole solutions in $(n+1)$-dimensional fourth-order quasitopological gravity (4QTG) coupled to power-Maxwell electrodynamics. Thermodynamic properties (entropy, temperature, electric potential) are analyzed, verifying the first law. Crucially, thermal stability is \textit{exclusively} achievable in asymptotically AdS spacetimes, while dS and flat solutions exhibit universal instability. The study reveals that 4QTG supports multi-horizon black holes even without charge—a feature absent in Einstein gravity—due to repulsive effects of quartic curvature terms. These results highlight the role of higher-curvature corrections in resolving classical limitations of general relativity and provide new insights for AdS/CFT correspondence.

Keywords

References

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Iranian Journal of Astronomy and Astrophysics
Volume 12, Issue 2
September 2025
Pages 163-178

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