A microscopic model of de Sitter spacetime with an observer
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866912222003855360 |
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| author | Tietto, Damiano Verlinde, Herman |
| author_facet | Tietto, Damiano Verlinde, Herman |
| contents | We introduce a simple microscopic quantum mechanical model of low-dimensional de Sitter holography with an observer. Using semiclassical gravity and elementary thermodynamic considerations, we derive a formula for the total entropy of a 3D Schwarzschild-de Sitter universe with an observer. We then match this entropy formula with the exactly known spectral density of the double scaled SYK model. Our result gives a de Sitter interpretation of the appearance of two notions of temperature in DSSYK. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_03869 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A microscopic model of de Sitter spacetime with an observer Tietto, Damiano Verlinde, Herman High Energy Physics - Theory We introduce a simple microscopic quantum mechanical model of low-dimensional de Sitter holography with an observer. Using semiclassical gravity and elementary thermodynamic considerations, we derive a formula for the total entropy of a 3D Schwarzschild-de Sitter universe with an observer. We then match this entropy formula with the exactly known spectral density of the double scaled SYK model. Our result gives a de Sitter interpretation of the appearance of two notions of temperature in DSSYK. |
| title | A microscopic model of de Sitter spacetime with an observer |
| topic | High Energy Physics - Theory |
| url | https://arxiv.org/abs/2502.03869 |