2 papers
cond-mat.str-el2025
Non-Abelian operator size distribution in charge-conserving many-body systems
Mina Tarakemeh, Shenglong Xu
We show that operator dynamics in U(1) symmetric systems are constrained by two independent conserved charges and construct a non-Abelian operator size basis that respects both, en…
quant-ph2024
Dynamics of operator size distribution in q-local quantum Brownian SYK and spin models
Shenglong Xu
We study operator dynamics in Brownian quantum many-body models with -local interactions. The operator dynamics are characterized by the time-dependent size distribution, for wh…