Affine group symmetries on the light ray, with dilations implementing modular flow, provide the minimal structure for thermality on the Rindler horizon via the Mellin transform bridge between Minkowski and Rindler modes.
Horizon temperature on the real line
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abstract
We illustrate the analogue of the Unruh effect for a quantum system on the real line. Our derivation relies solely on basic elements of representation theory of the group of affine transformations without a notion of time or metric. Our result shows that a thermal distribution naturally emerges in connecting quantum states belonging to representations associated to distinct notions of translational symmetry.
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hep-th 1years
2026 1verdicts
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Modular theory and affine representations on the Rindler horizon
Affine group symmetries on the light ray, with dilations implementing modular flow, provide the minimal structure for thermality on the Rindler horizon via the Mellin transform bridge between Minkowski and Rindler modes.