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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2603.13145 |
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| _version_ | 1866911512673648640 |
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| author | Kovalsky, Lucas K. Pathak, Shivesh Ritchie, Kyle |
| author_facet | Kovalsky, Lucas K. Pathak, Shivesh Ritchie, Kyle |
| contents | We derive a dS$_4 \times \mathbb R$ quotient spacetime that is asymptotically dS$_4$, where the quotient makes its past boundary oppositely oriented relative to its future boundary. This introduces a lightlike singularity that severs the antipodes of the spacetime and simplifies its global vacuum to a trivial product on antipodal static patches. We show that this state is conformal to the vacuum of an infinite orientable cover of a non-orientable AdS$_3$ spacetime with an S$^2$ bundle. The vacuum's separability extends to its holographic dual, which is a product of Cardy states. We find that this candidate dS$_4$ vacuum state is perturbatively unstable within quantum gravity due to a vanishing Hagedorn temperature. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_13145 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Conformal Vacuum of dS$_4\times \mathbb R$ with Oppositely Oriented Boundaries Kovalsky, Lucas K. Pathak, Shivesh Ritchie, Kyle High Energy Physics - Theory We derive a dS$_4 \times \mathbb R$ quotient spacetime that is asymptotically dS$_4$, where the quotient makes its past boundary oppositely oriented relative to its future boundary. This introduces a lightlike singularity that severs the antipodes of the spacetime and simplifies its global vacuum to a trivial product on antipodal static patches. We show that this state is conformal to the vacuum of an infinite orientable cover of a non-orientable AdS$_3$ spacetime with an S$^2$ bundle. The vacuum's separability extends to its holographic dual, which is a product of Cardy states. We find that this candidate dS$_4$ vacuum state is perturbatively unstable within quantum gravity due to a vanishing Hagedorn temperature. |
| title | Conformal Vacuum of dS$_4\times \mathbb R$ with Oppositely Oriented Boundaries |
| topic | High Energy Physics - Theory |
| url | https://arxiv.org/abs/2603.13145 |