2024
DOI: 10.1103/physrevresearch.6.l042062
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Thermal pure states for systems with antiunitary symmetries and their tensor network representations

Yasushi Yoneta

Abstract: Thermal pure state algorithms, which employ pure quantum states representing thermal equilibrium states instead of statistical ensembles, are useful both for numerical simulations and for theoretical analysis of thermal states. However, their inherently large entanglement makes it difficult to represent efficiently and limits their use in analyzing large systems. Here we propose a tensor network algorithm for constructing thermal pure states for systems with certain antiunitary symmetries, such as time-reversa… Show more

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