Entanglement Entropy in the $σ$-Model with the de Sitter Target Space

• Main Author: Vancea, Ion V.
• Format: Text
• Language: unknown
• Published: arXiv 2016
• Subjects: High Energy Physics - Theory hep-th; General Relativity and Quantum Cosmology gr-qc; Mathematical Physics math-ph; FOS Physical sciences; North Pole; Sitter
• Online Access: https://dx.doi.org/10.48550/arxiv.1609.02223; https://arxiv.org/abs/1609.02223

We derive the formula of the entanglement entropy between the left and right oscillating modes of the $σ$-model with the de Sitter target space. To this end, we study the theory in the \emph{cosmological gauge} in which the non-vanishing components of the metric on the two-dimensional base space are...