Automorphic scalar fields in two-dimensional de Sitter space
نویسندگان
چکیده
We study non-interacting automorphic quantum scalar fields with positive mass in two-dimensional de Sitter space. find that there are no Hadamard states which invariant except the periodic case, extending result of Epstein and Moschella for anti-periodic case. construct two-point Wightman functions non-Hadamard Sitter-invariant by exploiting fact they geodesic distance between two points satisfying an ordinary differential equation. then examine a certain state, is not invariant, show it approximately thermal state Gibbons-Hawking temperature when restricted to static region spacetime.
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ژورنال
عنوان ژورنال: Classical and Quantum Gravity
سال: 2022
ISSN: ['1361-6382', '0264-9381']
DOI: https://doi.org/10.1088/1361-6382/aca73f