Author

Gabriella G. Damas

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Preprint Sep 2026

Collective thermalization, work reliability, and resource bounds in a population-inverted Dicke Otto engine

Population inversion and collective relaxation can both enhance the performance of a quantum heat engine, but through distinct mechanisms. We study a quantum Otto engine whose working medium is a symmetric collective spin of $N$ two-level constituents. For commuting work strokes and collective reservoir coupling, the d...

Cler T. Garcez, Gabriella G. Damas, N. D. de Almeida et al. · 0 citations

Preprint Jul 2026

Finite-size reliability of homothetic quantum Otto engines

Homothetic quantum Otto engines---where all populated energy gaps are rescaled by a common factor---provide a reference model in which the quasistatic stochastic efficiency is trajectory-independent while work remains fluctuating. For arbitrary finite homothetic spectra we derive the two-point-measurement work distribu...

Gabriella G. Damas, Clebson Cruz, N. G. D. Almeida et al. · 0 citations