The entropy of dynamical de Sitter horizons
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866913931451170816 |
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| author | Zhao, Jinan |
| author_facet | Zhao, Jinan |
| contents | Recently Hollands, Wald and Zhang proposed a new formula for the entropy of a dynamical black hole. We lift this construction to the dynamical cosmological event horizon of an asymptotically de Sitter spacetime. By introducing a nontrivial correction term in the formula for the entropy, we generalize Gibbons and Hawking's "first law of event horizons" to non-stationary eras. We also develop the non-stationary physical process first law between two arbitrary horizon cross-sections for the cosmological event horizon. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_16138 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The entropy of dynamical de Sitter horizons Zhao, Jinan General Relativity and Quantum Cosmology High Energy Physics - Theory Recently Hollands, Wald and Zhang proposed a new formula for the entropy of a dynamical black hole. We lift this construction to the dynamical cosmological event horizon of an asymptotically de Sitter spacetime. By introducing a nontrivial correction term in the formula for the entropy, we generalize Gibbons and Hawking's "first law of event horizons" to non-stationary eras. We also develop the non-stationary physical process first law between two arbitrary horizon cross-sections for the cosmological event horizon. |
| title | The entropy of dynamical de Sitter horizons |
| topic | General Relativity and Quantum Cosmology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2503.16138 |