Real-time overlap sequences g_n enable extraction of specific heat, susceptibility, and entropy over a broad temperature range for quantum systems like the Heisenberg chain without target-temperature state preparation.
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Finite-temperature quantum Krylov method from real-time overlaps
Real-time overlap sequences g_n enable extraction of specific heat, susceptibility, and entropy over a broad temperature range for quantum systems like the Heisenberg chain without target-temperature state preparation.