13 citations · 42 across the 16 of their papers we have counts for
19 papers
Beyond the ETH envelope: exact two-resolvent fluctuation structure, projected microscopic closure, and rigid versus nonperturbative sectors
Zhiqiang Huang
Eigenstate thermalization fixes the smooth energy-resolved envelope of few-body observables but not the microscopic overlap statistics that realize it. In the multi-resolvent hiera…
Information-geometric bounds on nonequilibrium relaxation in quantum Markov dynamics
Xiao-Kan Guo, Zhiqiang Huang
In this paper, we study the quantum information-geometric structure underlying short-time nonequilibrium relaxation in quantum Markov dynamics, and derive bounds on the nonequilibr…
A Multi-Resolvent Hierarchy for the ETH Smooth Function
Zhiqiang Huang
The eigenstate thermalization hypothesis (ETH) parametrizes off-diagonal matrix elements by a smooth function whose microscopic origin remains largely phenomenological. We develop…
Resolvent-Based Self-Consistent Framework with Hierarchical Correlation Expansion for Strongly Correlated Many-Body Systems
Zhi-qiang Huang, Qing-yu Cai
We develop a nonperturbative framework for generic nonintegrable many-body systems that reorganizes the expansion of diagonal Green's functions. Starting from exact projection iden…
On the generic increase of entropy in isolated systems
Zhiqiang Huang, Qing-yu Cai
We investigate the generic emergence of entropy in isolated quantum systems from the spectral structure of their long-time dephased states. Using a resolvent-based hierarchy, we se…
Trade-off between diagonal and off-diagonal elements in the eigenstate thermalization hypothesis
Zhiqiang Huang
To bypass the reliance on local observables in verifying the eigenstate thermalization hypothesis (ETH), we introduce an observable-independent measure of distinguishability based…