Evaluating many-body stabilizer R\'enyi entropy by sampling reduced Pauli strings: singularities, volume law, and nonlocal magic

YM Ding, Z Wang, Z Yan - arxiv preprint arxiv:2501.12146, 2025 - arxiv.org
We present a novel quantum Monte Carlo scheme for evaluating the $\alpha $-stabilizer
R\'enyi entropy (SRE) with any integer $\alpha\ge 2$. By interpreting $\alpha $-SRE as a …

Long-range multipartite entanglement near measurement-induced transitions

SJ Avakian, T Pereg-Barnea… - arxiv preprint arxiv …, 2024 - arxiv.org
Measurements profoundly impact quantum systems, and can be used to create new states of
matter out of equilibrium. Here, we investigate the multipartite entanglement structure that …

Criticalité quantique et opérateurs chargés dans la Famille Gross-Neveu à partir de la Limite de Grand 𝛮

A Fallah Zarrinkar - 2024 - papyrus.bib.umontreal.ca
Comprendre les transitions de phase quantiques dans les systèmes de fermions itinérants
en interaction est crucial pour faire progresser notre connaissance de la criticité quantique …