178 citations · 1.1k across the 73 of their papers we have counts for
5 papers · 1 filter
Singularities in fidelity surfaces for quantum phase transitions: a geometric perspective
Huan-Qiang Zhou, Jian-Hui Zhao, Hong-Lei Wang +1
The fidelity per site between two ground states of a quantum lattice system corresponding to different values of the control parameter defines a surface embedded in a Euclidean spa…
Ground state fidelity from tensor network representations
Huan-Qiang Zhou, Roman Orus, Guifre Vidal
For any D-dimensional quantum lattice system, the fidelity between two ground state many-body wave functions is mapped onto the partition function of a D-dimensional classical stat…
Renormalization group flows and quantum phase transitions: fidelity versus entanglement
Huan-Qiang Zhou
We compare the roles of fidelity and entanglement in characterizing renormalization group flows and quantum phase transitions. It turns out that the scaling parameter extracted fro…
Fidelity approach to quantum phase transitions: finite size scaling for quantum Ising model in a transverse field
Huan-Qiang Zhou, Jian-Hui Zhao, Bo Li
We analyze the scaling parameter, extracted from the fidelity for two different ground states, for the one-dimensional quantum Ising model in a transverse field near the critical p…
Fidelity and quantum phase transitions
Huan-Qiang Zhou, John Paul Barjaktarevic
It is shown that the fidelity, a basic notion of quantum information science, may be used to characterize quantum phase transitions, regardless of what type of internal order is pr…