47 citations · 309 across the 23 of their papers we have counts for
23 papers
Strong ensemble nonequivalence in systems with local constraints
Qi Zhang, Diego Garlaschelli
The asymptotic equivalence of canonical and microcanonical ensembles is a central concept in statistical physics, with important consequences for both theoretical research and prac…
Ensemble nonequivalence and Bose-Einstein condensation in weighted networks
Qi Zhang, Diego Garlaschelli
The asymptotic (non)equivalence of canonical and microcanonical ensembles, describing systems with soft and hard constraints respectively, is a central concept in statistical physi…
The Non-Hermitian quantum mechanics and its canonical structure
Qi Zhang
The non-Hermitian Schrödinger equation is re-expressed generally in the form of Hamilton's canonical equation without any approximation. Its quantization called non-Hermitian quant…
Non-Hermitian effects of the intrinsic signs in topologically ordered wavefunctions
Qi Zhang, Wen-Tao Xu, Zi-Qi Wang +1
Negative signs in many-body wavefunctions play an important role in quantum mechanics. The ground-state wavefunction of double semion model on a two-dimensional hexagonal lattice c…
Tensor network approach to phase transitions of a non-Abelian topological phase
Wen-Tao Xu, Qi Zhang, Guang-Ming Zhang
The non-abelian topological phase with Fibonacci anyons minimally supports universal quantum computation. In order to investigate the possible phase transitions out of the Fibonacc…
Monopoles in non-Hermitian systems
Qi Zhang, Biao Wu
The monopole for the geometric curvature is studied for non-Hermitian systems. We find that the monopole contains not only the exceptional points but also branch cuts. As the mathe…