Relative entropy for 𝜆⁢𝜙4 in the Rindler wedge

Fröb M, Much A, Papadopoulos K (2026)

Publication Type: Journal article

Publication year: 2026

Journal

Physical Review D American Physical Society

Original Authors: Markus B. Fröb, Albert Much, Kyriakos Papadopoulos

Book Volume: 114

Article Number: 085001

Issue: 8

DOI: 10.1103/z7jp-p1xx

Abstract

We consider the relative entropy between the vacuum and a coherent state in the Rindler wedge for an interacting 𝜆⁢𝜙4 theory to first order in 𝜆. We construct the perturbatively interacting Weyl algebra of the wedge, and employ Tomita-Takesaki modular theory and the Araki-Uhlmann formula to compute the relative entropy. We verify that the relative entropy reduces to the classical (interacting) boost Noether charge, analogously to the free theory, and that the Bekenstein bound holds.

Authors with CRIS profile

Markus Fröb Lehrstuhl für Mathematik (Operatoralgebren) (Heisenberg-Professur)

Involved external institutions

Universität Leipzig DE Germany (DE) Kuwait University KW Kuwait (KW)

How to cite

APA:

Fröb, M., Much, A., & Papadopoulos, K. (2026). Relative entropy for ��⁢��4 in the Rindler wedge. Physical Review D, 114. https://doi.org/10.1103/z7jp-p1xx

MLA:

Fröb, Markus, Albert Much, and Kyriakos Papadopoulos. "Relative entropy for ��⁢��4 in the Rindler wedge." Physical Review D 114 (2026).

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