Metastrings, Metaparticles and Black Hole Thermodynamics: On the Road Towards a Non-singular Black Hole Remnant
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arXiv
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| Format: | Preprint |
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2026
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| author | Chouha, Paul-Robert |
| author_facet | Chouha, Paul-Robert |
| contents | We investigate the thermodynamic evolution and endpoint of black hole evaporation in the framework of metastring theory and its particle excitations, the metaparticles. Metaparticles arise as zero modes of metastrings propagating on modular (doubled) spacetime and obey a modified dispersion relation exhibiting intrinsic UV/IR mixing controlled by a duality scale mu. Using a generalized Bekenstein argument adapted to metaparticles, we derive quantum-corrected entropy contributions associated with geometric and dual (winding-like) sectors of the underlying phase space.
When treated independently, these two entropy branches lead to an incomplete thermodynamic description, exhibiting unphysical behavior at small horizon area. We show that consistently treating the metaparticle as a single entangled quantum object -- rather than as two independent sectors -- naturally resolves these pathologies. We propose a pseudo-entangled total entropy that incorporates correlations between the geometric and dual sectors. The reality requirement of the entropy dynamically enforces a minimal horizon area and, equivalently, a minimal effective length scale associated with modular spacetime.
The resulting black hole thermodynamics exhibits a finite maximal temperature, a divergence of the heat capacity signaling a continuous phase transition, and a shutdown of Hawking radiation through geometric channels, leaving behind a cold, stable remnant. Unlike matter-supported or curvature-bounded regular black holes, the remnant obtained here is non-material and non-geometric in nature, corresponding to a finite modular core of spacetime rather than a dust-filled interior. We compare this scenario with mimetic gravity and other non-singular black hole models, emphasizing the distinct role played by first-class constraints, entropy, and modular geometry in the present framework. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2602_21407 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Metastrings, Metaparticles and Black Hole Thermodynamics: On the Road Towards a Non-singular Black Hole Remnant Chouha, Paul-Robert High Energy Physics - Theory General Relativity and Quantum Cosmology We investigate the thermodynamic evolution and endpoint of black hole evaporation in the framework of metastring theory and its particle excitations, the metaparticles. Metaparticles arise as zero modes of metastrings propagating on modular (doubled) spacetime and obey a modified dispersion relation exhibiting intrinsic UV/IR mixing controlled by a duality scale mu. Using a generalized Bekenstein argument adapted to metaparticles, we derive quantum-corrected entropy contributions associated with geometric and dual (winding-like) sectors of the underlying phase space. When treated independently, these two entropy branches lead to an incomplete thermodynamic description, exhibiting unphysical behavior at small horizon area. We show that consistently treating the metaparticle as a single entangled quantum object -- rather than as two independent sectors -- naturally resolves these pathologies. We propose a pseudo-entangled total entropy that incorporates correlations between the geometric and dual sectors. The reality requirement of the entropy dynamically enforces a minimal horizon area and, equivalently, a minimal effective length scale associated with modular spacetime. The resulting black hole thermodynamics exhibits a finite maximal temperature, a divergence of the heat capacity signaling a continuous phase transition, and a shutdown of Hawking radiation through geometric channels, leaving behind a cold, stable remnant. Unlike matter-supported or curvature-bounded regular black holes, the remnant obtained here is non-material and non-geometric in nature, corresponding to a finite modular core of spacetime rather than a dust-filled interior. We compare this scenario with mimetic gravity and other non-singular black hole models, emphasizing the distinct role played by first-class constraints, entropy, and modular geometry in the present framework. |
| title | Metastrings, Metaparticles and Black Hole Thermodynamics: On the Road Towards a Non-singular Black Hole Remnant |
| topic | High Energy Physics - Theory General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2602.21407 |