Keldysh field theory for driven open quantum systems

LM Sieberer, M Buchhold, S Diehl - Reports on Progress in …, 2016 - iopscience.iop.org
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 …

Nonequilibrium boundary-driven quantum systems: Models, methods, and properties

GT Landi, D Poletti, G Schaller - Reviews of Modern Physics, 2022 - APS
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 …

Topological zero modes and edge symmetries of metastable Markovian bosonic systems

VP Flynn, E Cobanera, L Viola - Physical Review B, 2023 - APS
Tight bosonic analogs of free-fermionic symmetry-protected topological phases, and their
associated edge-localized excitations, have long evaded the grasp of condensed-matter …

Towards a theory of metastability in open quantum dynamics

K Macieszczak, M Guţă, I Lesanovsky, JP Garrahan - Physical review letters, 2016 - APS
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 …

Anomalous decay of coherence in a dissipative many-body system

R Bouganne, M Bosch Aguilera, A Ghermaoui… - Nature Physics, 2020 - nature.com
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 …

Symmetrized Liouvillian gap in Markovian open quantum systems

T Mori, T Shirai - Physical review letters, 2023 - APS
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 …

Diagrammatic method for many-body non-Markovian dynamics: Memory effects and entanglement transitions

G Chiriacò, M Tsitsishvili, D Poletti, R Fazio… - Physical Review B, 2023 - APS
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 …

Dissipative dynamics of a fermionic superfluid with two-body losses

G Mazza, M Schirò - Physical Review A, 2023 - APS
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 …

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 …

Measurement induced transitions in non-Markovian free fermion ladders

M Tsitsishvili, D Poletti, M Dalmonte, G Chiriacò - SciPost Physics Core, 2024 - scipost.org
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 …