Coarse-graining in time, emergent temperature in 2d CFT at large central charge
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866909944050089984 |
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| author | Vos, Gideon |
| author_facet | Vos, Gideon |
| contents | Using the monodromy method, a compact expression is obtained for the identity block contribution to the expectation value of two low-energy probe operators on a broad class of time-dependent heavy pure states in large-$c$ 2d CFTs. It will be shown that the size of the compact spatial dimension sets a coarse-graining time-scale above which the thermal two-point function naturally emerges. A phenomena will be highlighted where the information of the pure state appears to get projected down to a single conformal representation. We will see that this projection is corroborated by known conformal bootstrap results. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2512_05197 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Coarse-graining in time, emergent temperature in 2d CFT at large central charge Vos, Gideon High Energy Physics - Theory Using the monodromy method, a compact expression is obtained for the identity block contribution to the expectation value of two low-energy probe operators on a broad class of time-dependent heavy pure states in large-$c$ 2d CFTs. It will be shown that the size of the compact spatial dimension sets a coarse-graining time-scale above which the thermal two-point function naturally emerges. A phenomena will be highlighted where the information of the pure state appears to get projected down to a single conformal representation. We will see that this projection is corroborated by known conformal bootstrap results. |
| title | Coarse-graining in time, emergent temperature in 2d CFT at large central charge |
| topic | High Energy Physics - Theory |
| url | https://arxiv.org/abs/2512.05197 |