De Sitter quantum scalar field and horizon holography
arXiv:hep-th/0505179
Abstract
We show explicitly that free quantum field theory in de Sitter background restricted on the cosmological horizon produces another quantum field theory unitarily equivalent with the original one. Symmetry properties descending from the dual theory are also remarked. In the restricted theory the thermal properties, known for de Sitter quantum field theory, can be proved straightforwardly.
arXiv comment14 pages, 1 figure, minor corrections, added references
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