Dynamical phase transitions in the collisionless pre-thermal states of isolated quantum systems: theory and experiments
We overview the concept of dynamical phase transitions (DPTs) in isolated quantum
systems quenched out of equilibrium. We focus on non-equilibrium transitions characterized …
systems quenched out of equilibrium. We focus on non-equilibrium transitions characterized …
[HTML][HTML] Out-of-equilibrium dynamics of quantum many-body systems with long-range interactions
Experimental progress in atomic, molecular, and optical platforms in the last decade has
stimulated strong and broad interest in the quantum coherent dynamics of many long-range …
stimulated strong and broad interest in the quantum coherent dynamics of many long-range …
Scrambling and entanglement spreading in long-range spin chains
We study scrambling in connection with multipartite entanglement dynamics in regular and
chaotic long-range spin chains, characterized by a well-defined semi-classical limit. For …
chaotic long-range spin chains, characterized by a well-defined semi-classical limit. For …
Machine learning interatomic potential for simulations of carbon at extreme conditions
A spectral neighbor analysis (SNAP) machine learning interatomic potential (MLIP) has
been developed for simulations of carbon at extreme pressures (up to 5 TPa) and …
been developed for simulations of carbon at extreme pressures (up to 5 TPa) and …
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 …
Dynamical quantum phase transitions in non-Hermitian lattices
In closed quantum systems, dynamical phase transitions are identified by the nonanalytic
behavior of the return probability as a function of time. In this work, we study the nonunitary …
behavior of the return probability as a function of time. In this work, we study the nonunitary …
Quench dynamics and zero-energy modes: The case of the Creutz model
In most lattice models, the closing of a band gap typically occurs at high-symmetry points in
the Brillouin zone. Differently, in the Creutz model—describing a system of spinless fermions …
the Brillouin zone. Differently, in the Creutz model—describing a system of spinless fermions …
Dynamical quantum phase transitions: A geometric picture
J Lang, B Frank, JC Halimeh - Physical review letters, 2018 - APS
The Loschmidt echo is a purely quantum-mechanical quantity whose determination for large
quantum many-body systems requires an exceptionally precise knowledge of all eigenstates …
quantum many-body systems requires an exceptionally precise knowledge of all eigenstates …
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 …
Dissipative time crystals with long-range Lindbladians
Dissipative time crystals can appear in spin systems, when the Z 2 symmetry of the
Hamiltonian is broken by the environment, and the square of total spin operator S 2 is …
Hamiltonian is broken by the environment, and the square of total spin operator S 2 is …