Fabio Caleffi
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View article: Collective excitations of a strongly-correlated non-equilibrium photon fluid across the Mott/superfluid phase transition
Collective excitations of a strongly-correlated non-equilibrium photon fluid across the Mott/superfluid phase transition Open
We develop a Gutzwiller theory for the non-equilibrium steady states of a strongly-interacting photon fluid driven by a non-Markovian incoherent pump. In particular, we explore the collective excitation modes across the out-of-equilibrium …
View article: Quantum fluctuations beyond the Gutzwiller approximation in the Bose-Hubbard model
Quantum fluctuations beyond the Gutzwiller approximation in the Bose-Hubbard model Open
Taking inspiration from the state-of-the art knowledge of the Bose-Hubbard (BH) model and recent methodological developments in its fermionic counterpart, this work deals with the study of the collective dynamics of a lattice Bose gas beyo…
View article: Quantum Gutzwiller approach for the two-component Bose-Hubbard model
Quantum Gutzwiller approach for the two-component Bose-Hubbard model Open
We study the effects of quantum fluctuations in the two-component Bose-Hubbard model generalizing to mixtures the quantum Gutzwiller approach introduced recently in [Phys. Rev. Research 2, 033276 (2020)]. As a basis for our study, we analy…
View article: Report on 2110.13095v1
Report on 2110.13095v1 Open
We study the effects of quantum fluctuations in the two-component Bose-Hubbard model generalizing to mixtures the quantum Gutzwiller approach introduced recently in [Phys.Rev. Research 2, 033276 (2020)].As a basis for our study, we analyze…
View article: Report on 2110.13095v1
Report on 2110.13095v1 Open
We study the effects of quantum fluctuations in the two-component Bose-Hubbard model generalizing to mixtures the quantum Gutzwiller approach introduced recently in [Phys.Rev. Research 2, 033276 (2020)].As a basis for our study, we analyze…
View article: Impurity dephasing in a Bose–Hubbard model
Impurity dephasing in a Bose–Hubbard model Open
We study the dynamics of a two-level impurity embedded in a two-dimensional Bose–Hubbard (BH) model at zero temperature from an open quantum system perspective. Results for the decoherence across the whole phase diagram are presented, with…