The Relative Fermionic Entropy in Two-Dimensional Rindler Spacetime
Mathematical Physics
2026-03-23 v3 General Relativity and Quantum Cosmology
math.MP
Quantum Physics
Abstract
The fermionic relative entropy in two-dimensional Rindler spacetime is studied using both modular theory and the reduced one-particle density operators. The methods and results are compared. A formula for the relative entropy for general Gaussian states is derived. As an application, the relative entropy is computed for a class of non-unitary excitations.
Cite
@article{arxiv.2505.14076,
title = {The Relative Fermionic Entropy in Two-Dimensional Rindler Spacetime},
author = {Felix Finster and Albert Much},
journal= {arXiv preprint arXiv:2505.14076},
year = {2026}
}
Comments
32 pages, LaTeX, minor improvements