Fermi-Dirac staircase occupation of Floquet bands and current rectification inside the optical gap of metals: An exact approach
We consider a model of a Bloch band subjected to an oscillating electric field and coupled to
a featureless fermionic heat bath, which can be solved exactly. We demonstrate rigorously …
a featureless fermionic heat bath, which can be solved exactly. We demonstrate rigorously …
Generalized spin-boson models with non-normalizable form factors
D Lonigro - Journal of Mathematical Physics, 2022 - pubs.aip.org
Generalized spin-boson (GSB) models describe the interaction between a quantum
mechanical system and a structured boson environment, mediated by a family of coupling …
mechanical system and a structured boson environment, mediated by a family of coupling …
Long-range quantum tunneling via matter waves
YX Yang, SY Bai, JH An - Communications Physics, 2025 - nature.com
Quantum tunneling is a quantum phenomenon in which a microscopic object crosses
through a potential barrier even if its energy cannot overcome the barrier. A general belief is …
through a potential barrier even if its energy cannot overcome the barrier. A general belief is …
Self-adjointness of a class of multi-spin–boson models with ultraviolet divergences
D Lonigro - Mathematical Physics, Analysis and Geometry, 2023 - Springer
We study a class of quantum Hamiltonian models describing a family of N two-level systems
(spins) coupled with a structured boson field of positive mass, with a rotating-wave coupling …
(spins) coupled with a structured boson field of positive mass, with a rotating-wave coupling …
Renormalization of spin–boson interactions mediated by singular form factors
D Lonigro - INdAM Meeting: Quantum Mathematics Workshop, 2022 - Springer
We study and discuss the extension of the rotating-wave spin–boson model, together with
more general models describing a system–field coupling with a similar rotating-wave …
more general models describing a system–field coupling with a similar rotating-wave …
Global approximate controllability of quantum systems by form perturbations and applications
We provide sufficient conditions for the approximate controllability of infinite-dimensional
quantum control systems corresponding to form perturbations of the drift Hamiltonian …
quantum control systems corresponding to form perturbations of the drift Hamiltonian …
Multichannel decay: alternative derivation of the -th channel decay probability
F Giacosa - arxiv preprint arxiv:2207.13977, 2022 - arxiv.org
In the study of decays, it is quite common that an unstable quantum state/particle has
multiple distinct decay channels. In this case, besides the survival probability $ p (t) $, also …
multiple distinct decay channels. In this case, besides the survival probability $ p (t) $, also …