Keldysh field theory for driven open quantum systems
Recent experimental developments in diverse areas—ranging from cold atomic gases to
light-driven semiconductors to microcavity arrays—move systems into the focus which are …
light-driven semiconductors to microcavity arrays—move systems into the focus which are …
Nonequilibrium boundary-driven quantum systems: Models, methods, and properties
Recent years have seen tremendous progress in the theoretical understanding of quantum
systems driven dissipatively by coupling to different baths at their edges. This was possible …
systems driven dissipatively by coupling to different baths at their edges. This was possible …
Topological zero modes and edge symmetries of metastable Markovian bosonic systems
Tight bosonic analogs of free-fermionic symmetry-protected topological phases, and their
associated edge-localized excitations, have long evaded the grasp of condensed-matter …
associated edge-localized excitations, have long evaded the grasp of condensed-matter …
Towards a theory of metastability in open quantum dynamics
By generalizing concepts from classical stochastic dynamics, we establish the basis for a
theory of metastability in Markovian open quantum systems. Partial relaxation into long-lived …
theory of metastability in Markovian open quantum systems. Partial relaxation into long-lived …
Anomalous decay of coherence in a dissipative many-body system
Decoherence plays a major role in our current understanding of the conceptual foundations
of quantum physics. In many instances, decoherence is also a threat that must be countered …
of quantum physics. In many instances, decoherence is also a threat that must be countered …
Symmetrized Liouvillian gap in Markovian open quantum systems
Markovian open quantum systems display complicated relaxation dynamics. The spectral
gap of the Liouvillian characterizes the asymptotic decay rate toward the steady state, but it …
gap of the Liouvillian characterizes the asymptotic decay rate toward the steady state, but it …
Diagrammatic method for many-body non-Markovian dynamics: Memory effects and entanglement transitions
We study the quantum dynamics of a many-body system subject to coherent evolution and
coupled to a non-Markovian bath. We propose a technique to unravel the non-Markovian …
coupled to a non-Markovian bath. We propose a technique to unravel the non-Markovian …
Dissipative dynamics of a fermionic superfluid with two-body losses
We study the dissipative dynamics of a fermionic superfluid in the presence of two-body
losses. We use a variational approach for the Lindblad dynamics and obtain dynamical …
losses. We use a variational approach for the Lindblad dynamics and obtain dynamical …
Exact multistability and dissipative time crystals in interacting fermionic lattices
H Alaeian, B Buča - Communications Physics, 2022 - nature.com
The existence of multistability in quantum systems beyond the mean-field approximation
remains an intensely debated open question. Quantum fluctuations are finite-size …
remains an intensely debated open question. Quantum fluctuations are finite-size …
Measurement induced transitions in non-Markovian free fermion ladders
Recently there has been an intense effort to understand measurement induced transitions,
but we still lack a good understanding of non-Markovian effects on these phenomena. To …
but we still lack a good understanding of non-Markovian effects on these phenomena. To …