Spectral bounds on entropy and ergotropy via statistical effective temperature in classical polarization and quantum thermal states

We formulate a unified definition of the statistical effective temperature (SET), τ_{d}, for finite-dimensional classical and quantum systems, using dimension-dependent indices of purity derived from the eigenvalue spectrum. This spectral approach bypasses the need for Hamiltonians or energy gaps an...

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Bibliographic Details
Main Authors: Tariq Aziz, Meng-Long Song, Liu Ye, Dong Wang, José J. Gil, Sabre Kais
Format: Article
Language:English
Published: American Physical Society 2025-08-01
Series:Physical Review Research
Online Access:http://doi.org/10.1103/fhqs-g7c6
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