Relative Unitary Implementability of Perturbed Quantum Field Dynamics on de-Sitter Space

Abstract

In this article, we study the quantum dynamics of a Klein-Gordon field on de-Sitter space. We prove time evolution is not unitarily implementable. We also consider a Klein-Gordon field perturbed by a local potential V. In this case we prove that the deviation from the V=0 dynamics is unitarily implementable.

PhD Thesis, 33 Pages

References in corpus (2)

• Two-point Functions and Quantum Fields in de Sitter Universe
• Quantum unitary evolution of linearly polarized S^1\times S^2 and S^3 Gowdy models coupled to massless scalar fields