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arXiv · 1112.0740

Thermal Pure Quantum States at Finite Temperature

Sho Sugiura·Akira Shimizu
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Abstract

An equilibrium state can be represented by a pure quantum state, which we call a thermal pure quantum (TPQ) state. We propose a new TPQ state and a simple method of obtaining it. A single realization of the TPQ state suffices for calculating all statistical-mechanical properties, including correlation functions and genuine thermodynamic variables, of a quantum system at finite temperature.

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Sho Sugiura, Akira Shimizu. 2011-12-04. Thermal Pure Quantum States at Finite Temperature. https://doi.org/10.1103/physrevlett.108.240401

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