670 citations · 2.8k across the 53 of their papers we have counts for
Showing 2015Show all
3 papers · 1 filter
quant-ph2015★ 13 cited
Finite-temperature quantum criticality in a complex-parameter plane
Ci. Li, Zhi. Song
A conventional quantum phase transition (QPT) occurs not only at zero temperature, but also exhibits finite-temperature quantum criticality. Motivated by the discovery of the pseud…
quant-ph2015★ 109 cited
Topological Characterization of Extended Quantum Ising Models
G. Zhang, Z. Song
We show that a class of exactly solvable quantum Ising models, including the transverse-field Ising model and anisotropic XY model, can be characterized as the loops in a two-dimen…
quant-ph2015★ 24 cited
Generation of Bell, W and GHZ states via exceptional points in non-Hermitian quantum spin systems
Ci. Li, Zhi. Song
We study quantum phase transitions in non-Hermitian XY and transverse-field Ising spin chains, in which the non-Hermiticity arises from the imaginary magnetic field. Analytical and…