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quant-ph2022
Collective excitations of a strongly-correlated non-equilibrium photon fluid across the Mott/superfluid phase transition
Fabio Caleffi, Massimo Capone, Iacopo Carusotto
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…
cond-mat.quant-gas2022
Quantum fluctuations beyond the Gutzwiller approximation in the Bose-Hubbard model
Fabio Caleffi
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…
cond-mat.quant-gas2022★ 27 cited
Lattice polarons across the superfluid to Mott insulator transition
V. E. Colussi, F. Caleffi, C. Menotti +1
We study the physics of a mobile impurity confined in a lattice, moving within a Bose-Hubbard bath at zero temperature. Within the Quantum Gutzwiller formalism, we develop a beyond…