Linear energy-momentum tensor for a scalar field in de Sitter space

Authors

• Mohammad Reza Tanhayi ¹
• Sepideh Mirabi ²

1. Department of Physics, Faculty of Basic Science, Islamic Azad University Central Tehran Branch (IAUCTB), P.O. Box 14676‑86831, Tehran, Iran
2. Department of Physics, Islamic Azad University

Abstract

AbstractIn this work, under a small perturbation of the background metric with the squeezing of other fields (scalar field in our case), the linear form of the energy-momentum tensor is calculated in terms of the perturbation factor. The linear form of the Klein-Gordon equation for a scalar field with both minimally and conformally coupled cases in de Sitter and flat metrics are also calculated.

Keywords

• Gordon equation
• Klein
• Momentum tensor in curved space
• De Sitter spacetime
• Energy