3 papers
cond-mat.stat-mech2025
Theory of Irreversibility in Quantum Many-Body Systems
Takato Yoshimura, Lucas Sá
We address the longstanding challenge in quantum many-body theory of reconciling unitary dynamics with irreversible relaxation. In classical chaos, the unitary evolution operator d…
hep-th2024
Anatomy of information scrambling and decoherence in the integrable Sachdev-Ye-Kitaev model
Antonio M. García-García, Chang Liu, Lucas Sá +2
The growth of information scrambling, captured by out-of-time-order correlation functions (OTOCs), is a central indicator of the nature of many-body quantum dynamics. Here, we comp…
cond-mat.stat-mech2024
Integrability versus chaos in the steady state of many-body open quantum systems
Josef Richter, Lucas Sá, Masudul Haque
The Lindblad description of an open quantum system gives rise to two types of integrability, since the nonequilibrium steady state can be integrable independently of the Liouvillia…