Isometry invariance of exact correlation functions in various charts of Minkowski and de Sitter spaces
PHYSICAL REVIEW D(2023)
Abstract
We consider quantum field theory with self-interactions in various patches of Minkowski and de Sitter spacetimes. Namely, in Minkowski spacetime we consider separately the right (left) Rindler wedge, past wedge, and future wedge. In de Sitter spacetime we consider expanding the Poincare patch, the static patch, the contracting Poincare patch, and the global de Sitter itself. In all cases we restrict our considerations to the isometry invariant states leading to maximally analytic propagators. We prove that loop corrections in the right (left) Rindler wedge, in the past wedge (of Minkowski spacetime), in the static patch and in the expanding Poincare patch (of de Sitter spacetime) respect the isometries of the corresponding symmetric spacetimes. All these facts are related to the causality and analyticity properties of the propagators for the states that we consider. At the same time in the future wedge, in the contracting Poincare patch and in the global de Sitter spacetime infrared effects violate the isometries.
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Key words
exact correlation functions,invariance,various charts,minkowski
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