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arXiv · 2512.01491

Asymptotic Weyl Symmetry and Its Anomaly in a Curved Spacetime

Jeongwon Ho·O-Kab Kwon·Sang-A Park·Sang-Heon Yi
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Abstract

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.

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Jeongwon Ho, O-Kab Kwon, Sang-A Park, Sang-Heon Yi. 2025-12-01. Asymptotic Weyl Symmetry and Its Anomaly in a Curved Spacetime. https://arxiv.org/abs/2512.01491

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