5 papers
Evolution of quantum geometric tensor of 1D periodic systems after a quench
Jia-Chen Tang, Xu-Yang Hou, Yu-Huan Huang +1
We investigate the post-quench dynamics of the quantum geometric tensor (QGT) of 1D periodic systems with a suddenly changed Hamiltonian. The diagonal component with respect to the…
Bound-like State in a 1D Self-Similar Delta-Barrier Array
Jia-Chen Tang, Xu-Yang Hou, Yan He +1
We investigate a one-dimensional quantum system with a self-similar arrangement of delta-function potential barriers, exhibiting discrete scale invariance. The singular potential i…
Mixed-state geometric phases of coherent and squeezed spin states
Xin Wang, Jia-Chen Tang, Xu-Yang Hou +2
Two mixed-state geometric phases, known as the Uhlmann phase and interferometric geometric phase (IGP), of spin coherent states (CSSs) and spin squeezed states (SSSs) are analyzed.…
Mathematical Foundation of the U Quantum Geometric Tensor
Xin Wang, Xu-Yang Hou, Jia-Chen Tang +1
In this paper, we systematically establish the mathematical foundation for the quantum geometric tensor (QGT) of mixed states Explicitly, we present a description b…
Geometry effect of the dynamical quantum phase transitions at finite temperatures
Jia-Chen Tang, Xu-Yang Hou, Hao Guo
Dynamical quantum phase transitions (DQPTs) probe the nonequilibrium evolution of quantum systems, unveiling their geometric and topological characteristics. In this study, we intr…