MORE Thermal Gauge Theories at Finite θ and μ from Real-Time Quantum Simulation
Abstract
Imaginary-time evolution can be reconstructed from real-time quantum simulations using exact integral transforms. We identify the construction of Guo, Shibu, Lin, and Zhao as a continuous linear combination of Hamiltonian simulations and show that its slow 1/tcut convergence arises from a redundant kernel component. We extend the construction from pure-state matrix elements to thermal traces and correlators. One real-time dataset then reconstructs targeted inverse temperatures, Euclidean separations, and chemical potentials through classical post-processing, bringing finite-(T,θ,μ) physics within reach of real-time quantum simulation without thermal-state preparation. We benchmark the method on one- and two-flavor lattice Schwinger models, including circuit-level simulations with depolarizing noise.
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BibTeX
@misc{lamm2026more,
title = {{MORE Thermal Gauge Theories at Finite $θ$ and $μ$ from Real-Time Quantum Simulation}},
author = {Henry Lamm},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.38569},
eprint = {2609.38569},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.38569},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - MORE Thermal Gauge Theories at Finite θ and μ from Real-Time Quantum Simulation
AU - Henry Lamm
PY - 2026
DA - 2026/09/29
PB - arXiv
DO - 10.48550/arxiv.2609.38569
UR - https://arxiv.org/abs/2609.38569
AB - Imaginary-time evolution can be reconstructed from real-time quantum simulations using exact integral transforms. We identify the construction of Guo, Shibu, Lin, and Zhao as a continuous linear combination of Hamiltonian simulations and show that its slow 1/t_cut convergence arises from a redundant kernel component. We extend the construction from pure-state matrix elements to thermal traces and correlators. One real-time dataset then reconstructs targeted inverse temperatures, Euclidean separations, and chemical potentials through classical post-processing, bringing finite-(T,θ,μ) physics within reach of real-time quantum simulation without thermal-state preparation. We benchmark the method on one- and two-flavor lattice Schwinger models, including circuit-level simulations with depolarizing noise.
ER -