Non-hermitian strongly interacting Dirac fermions
Exotic quantum phases and phase transition in the strongly interacting Dirac systems have
attracted tremendous interests. On the other hand, non-Hermitian physics, usually …
attracted tremendous interests. On the other hand, non-Hermitian physics, usually …
Fidelity susceptibility at the Lifshitz transition between the noninteracting topologically distinct quantum critical points
XJ Yu, WL Li - Physical Review B, 2024 - APS
By constructing an exactly solvable spin model, we investigate the critical behaviors of
transverse-field Ising chains interpolated with cluster interactions, which exhibit various …
transverse-field Ising chains interpolated with cluster interactions, which exhibit various …
Fidelity susceptibility as a diagnostic of the commensurate-incommensurate transition: A revisit of the programmable Rydberg chain
In recent years, programmable Rydberg-atom arrays have been widely used to simulate
new quantum phases and phase transitions, generating great interest among theorists and …
new quantum phases and phase transitions, generating great interest among theorists and …
Identifying non-Hermitian critical points with the quantum metric
The geometric properties of quantum states are fully encoded by the quantum geometric
tensor. The real and imaginary parts of the quantum geometric tensor are the quantum …
tensor. The real and imaginary parts of the quantum geometric tensor are the quantum …
Einstein's quantum elevator: Hermitization of non-Hermitian Hamiltonians via a generalized vielbein formalism
The formalism for non-Hermitian quantum systems sometimes blurs the underlying physics.
We present a systematic study of the vielbeinlike formalism which transforms the Hilbert …
We present a systematic study of the vielbeinlike formalism which transforms the Hilbert …
Rényi entropies and negative central charges in non-Hermitian quantum systems
Quantum entanglement is one essential element to characterize many-body quantum
systems. However, the entanglement measures are mostly discussed in Hermitian systems …
systems. However, the entanglement measures are mostly discussed in Hermitian systems …
Biorthogonal dynamical quantum phase transitions in non-Hermitian systems
By utilizing biorthogonal bases, we develop a comprehensive framework for studying
biorthogonal dynamical quantum phase transitions in non-Hermitian systems. With the help …
biorthogonal dynamical quantum phase transitions in non-Hermitian systems. With the help …
Non-Hermitian Weyl semimetal and its Floquet engineering
H Wu, JH An - Physical Review B, 2022 - APS
It is generally believed that non-Hermiticity can transform Weyl semimetals into Weyl-
exceptional-ring semimetals. However, this belief is from the systems without skin effect. We …
exceptional-ring semimetals. However, this belief is from the systems without skin effect. We …
General properties of fidelity in non-Hermitian quantum systems with PT symmetry
The fidelity susceptibility is a tool for studying quantum phase transitions in the Hermitian
condensed matter systems. Recently, it has been generalized with the biorthogonal basis for …
condensed matter systems. Recently, it has been generalized with the biorthogonal basis for …
Biorthogonal quantum criticality in non-Hermitian many-body systems
G Sun, JC Tang, SP Kou - Frontiers of Physics, 2022 - Springer
We develop the perturbation theory of the fidelity susceptibility in biorthogonal bases for
arbitrary interacting non-Hermitian many-body systems with real eigenvalues. The quantum …
arbitrary interacting non-Hermitian many-body systems with real eigenvalues. The quantum …