Asymptotic Weyl Symmetry and Its Anomaly in a Curved Spacetime
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866909948989931520 |
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| author | Ho, Jeongwon Kwon, O-Kab Park, Sang-A Yi, Sang-Heon |
| author_facet | Ho, Jeongwon Kwon, O-Kab Park, Sang-A Yi, Sang-Heon |
| contents | We explore an unusual symmetry in a field theory on a specific (1+1)-dimensional curved spacetime, which has an interesting interpretation as an approximate asymptotic Weyl symmetry. Unlike the conventional Weyl symmetry, the boundary term under the variation plays a crucial role in understanding for its anomaly. After converting a two-dimensional field theory on curved spacetime to an inhomogeneous field theory, we obtain the vacuum expectation value of the energy-momentum tensor. Then, we show the existence of an Unruh-like effect in the bubble wall expansion at the zero temperature. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_01491 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Asymptotic Weyl Symmetry and Its Anomaly in a Curved Spacetime Ho, Jeongwon Kwon, O-Kab Park, Sang-A Yi, Sang-Heon High Energy Physics - Theory General Relativity and Quantum Cosmology We explore an unusual symmetry in a field theory on a specific (1+1)-dimensional curved spacetime, which has an interesting interpretation as an approximate asymptotic Weyl symmetry. Unlike the conventional Weyl symmetry, the boundary term under the variation plays a crucial role in understanding for its anomaly. After converting a two-dimensional field theory on curved spacetime to an inhomogeneous field theory, we obtain the vacuum expectation value of the energy-momentum tensor. Then, we show the existence of an Unruh-like effect in the bubble wall expansion at the zero temperature. |
| title | Asymptotic Weyl Symmetry and Its Anomaly in a Curved Spacetime |
| topic | High Energy Physics - Theory General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2512.01491 |