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107 papers
Non-Fermi-Liquid Behavior from Cavity Electromagnetic Vacuum Fluctuations at the Superradiant Transition
Peng Rao, Francesco Piazza
We study two-dimensional materials where electrons are coupled to the vacuum electromagnetic field of a cavity. We show that, at the onset of the superradiant phase transition towa…
Controlling Collective Phenomena Via the Quantum State of Interaction-Mediators: Changing the Criticality of Photon-Mediated Superconductivity Via Fock States of Light
Ahana Chakraborty, Michele Pini, Martina S. Zündel +1
How are two-body scattering and the resulting collective phenomena affected by preparing the mediator of interactions in different quantum states? This question has recently become…
Decoherence and momentum relaxation in Fermi-polaron Rabi dynamics: a kinetic equation approach
Tomasz Wasak, Matteo Sighinolfi, Johannes Lang +2
Despite the paradigmatic nature of the Fermi-polaron model, the theoretical description of its nonlinear dynamics poses challenges. Here, we apply a quantum kinetic theory of drive…
The physics of boundary conditions in reaction-diffusion problems
Francesco Piazza
The use of fully or partially absorbing boundary conditions for diffusion-based problems has become paradigmatic in physical chemistry and biochemistry to describe reactions occurr…
Light-induced quantum droplet phases of lattice bosons in multimode cavities
P. Karpov, F. Piazza
Multimode optical cavities can be used to implement interatomic interactions which are highly tunable in strength and range. For bosonic atoms trapped in an optical lattice, cavity…
Mechanisms for transient localization in a diatomic nonlinear chain
Stefano Lepri, Francesco Piazza
We investigate transient nonlinear localization, namely the self-excitation of energy bursts in an atomic lattice at finite temperature. As a basic model we consider the diatomic L…