Time-reversal positivity
Strongly Correlated Electrons
2025-10-28 v2
Abstract
We propose a new analytical tool called time-reversal positivity. It is an analogue of the Majorana reflection positivity in time-reversal symmetric case. This new time-reversal positivity can fully explain the relationship between time-reversal symmetry and the sign-free property in quantum Monte Carlo simulations. Using a cone-theoretical method, we show the ground state uniqueness for the time-reversal symmetric non-hermitian Hubbard model.
Cite
@article{arxiv.2510.06226,
title = {Time-reversal positivity},
author = {Zhong-Chao Wei},
journal= {arXiv preprint arXiv:2510.06226},
year = {2025}
}