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Open Quantum Systems Decoherence Quantum Simulation Entanglement Theory Quantum Correlations Quantum Thermodynamics

Modular Structures on Trace Class Operators and Applications to Themodynamical Equilibrium States of Infinitely Degenerate Systems

arXiv
Authors: Ricardo Correa da Silva

Year

2020

Paper ID

18438

Status

Preprint

Abstract Read

~2 min

Abstract Words

114

Citations

N/A

Abstract

We study the thermal equilibrium states (KMS states) of infinitely degenerate Hamiltonians, in particular, we study the example of the Landau levels. We classify all KMS states in an example of algebra suitable for describing infinitely degenerate systems and we show that there is no cyclic and separating vector corresponding to the Landau Hamiltonian. Then, we try to reproduce the thermodynamical limit of a finite box as used in the very beginning of the theory of KMS states by Haag Hugenholtz and Winnink. Finally, we discuss the situation from the point of view of non-σ-additive probabilities, non-normal nor semifinite states, singular (Dixmier) states and, hence, an extension of the concept of KMS state.

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  • We study the thermal equilibrium states (KMS states) of infinitely degenerate Hamiltonians, in particular, we study the example of the Landau levels.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2012.07643 [2] arXiv https://arxiv.org/abs/2012.07643 [3] Publisher https://arxiv.org/abs/2012.07643

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