DOAJ Open Access 2025

Smooth Perturbations to Rényi Entropy

Andrew Buchanan

Abstrak

Abstract A method is presented for computing the Rényi entropy of a perturbed massless vacuum on the ball via a comparison with lattice field theory. If the perturbed state is Gaussian with smoothly varying correlation functions and the perturbation parameter has units of energy, I show the coefficients for Rényi entropy are analytically computable for all values of the Rényi parameter α in odd dimensions and for integer α in even dimensions. I apply this procedure to compute coefficients for the large distant expansion for the Rényi mutual information of distant balls and the low temperature expansion for the entropy of a thermal field.

Topik & Kata Kunci

Nuclear and particle physics. Atomic energy. Radioactivity

Penulis (1)

Andrew Buchanan

Format Sitasi

APA MLA BibTeX

Buchanan, A. (2025). Smooth Perturbations to Rényi Entropy. https://doi.org/10.1007/JHEP07(2025)233

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Informasi Jurnal

Tahun Terbit: 2025
Sumber Database: DOAJ
DOI: 10.1007/JHEP07(2025)233
Akses: Open Access ✓