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arXiv · 2401.02345

An entropy bound due to symmetries

Roberto Longo·Vincenzo Morinelli
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Abstract

Let $H$ be a local net of real Hilbert subspaces of a complex Hilbert space on the family of double cones of the spacetime $\mathbb{R}^{d+1}$, covariant with respect to a positive energy, unitary representation $U$ of the Poincar\'e group, with the Bisognano-Wichmann property for the wedge modular group. We set an upper bound on the local entropy $S_H(\phi|\! | C)$ of a vector in a region $C$ that depends only on $U$ and the PCT anti-unitary canonically associated with $H$. A similar result holds for local, M\"obius covariant nets of standard subspaces on the circle. We compute the entropy increase and illustrate this bound for the nets associated with the $U(1)$-current derivatives.

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Roberto Longo, Vincenzo Morinelli. 2024-01-04. An entropy bound due to symmetries. https://arxiv.org/abs/2401.02345

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