Dynamical and excited-state quantum phase transitions in collective systems
We study dynamical phase transitions (DPTs) in quantum many-body systems with infinite-
range interaction, and present a theory connecting the two kinds of known DPTs (sometimes …
range interaction, and present a theory connecting the two kinds of known DPTs (sometimes …
Dissipative Floquet dynamical quantum phase transition
Non-Hermitian Hamiltonians provide a simple picture for inspecting dissipative systems with
natural or induced gain and loss. We investigate the Floquet dynamical phase transition in …
natural or induced gain and loss. We investigate the Floquet dynamical phase transition in …
Theory of dynamical phase transitions in quantum systems with symmetry-breaking eigenstates
We present a theory for the two kinds of dynamical quantum phase transitions, termed DPT-I
and DPT-II, based on a minimal set of symmetry assumptions. In the special case of …
and DPT-II, based on a minimal set of symmetry assumptions. In the special case of …
Out-of-time-order correlations and Floquet dynamical quantum phase transition
Out-of-time-order correlators (OTOCs) progressively play an important role in different fields
of physics, particularly in the nonequilibrium quantum many-body systems. In this paper, we …
of physics, particularly in the nonequilibrium quantum many-body systems. In this paper, we …
Dynamical topological quantum phase transitions at criticality
The nonequilibrium dynamics of two-dimensional Su-Schrieffer-Heeger model, in the
presence of staggered chemical potential, is investigated using the notion of dynamical …
presence of staggered chemical potential, is investigated using the notion of dynamical …
Driving enhanced quantum sensing in partially accessible many-body systems
The ground-state criticality of many-body systems is a resource for quantum-enhanced
sensing, namely, the Heisenberg precision limit, provided that one has access to the whole …
sensing, namely, the Heisenberg precision limit, provided that one has access to the whole …
Finite-temperature dynamical quantum phase transition in a non-Hermitian system
We investigate the interplay between non-Hermiticity and finite temperature in the context of
a mixed-state dynamical quantum phase transition (MSDQPT). We consider ap-wave …
a mixed-state dynamical quantum phase transition (MSDQPT). We consider ap-wave …
Engineering Floquet dynamical quantum phase transitions
Floquet dynamical quantum phase transitions (FDQPTs) are signified by recurrent
nonanalytic behaviors of observables in time. In this work, we introduce a quench-free and …
nonanalytic behaviors of observables in time. In this work, we introduce a quench-free and …
Dynamical phase transition and scaling in the chiral clock Potts chain
XJ Yu - Physical Review A, 2023 - APS
Based on time-dependent variational-principle algorithms, we investigate the dynamical
critical behavior of quantum three-state Potts chains with chiral interactions. Using the …
critical behavior of quantum three-state Potts chains with chiral interactions. Using the …
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 …