Results 11 to 20 of about 13,806,723 (180)

(Almost) everything is a Dicke model - Mapping non-superradiant correlated light-matter systems to the exactly solvable Dicke model [PDF]

open access: yesSciPost Physics Core
We investigate classes of interacting quantum spin systems in a single-mode cavity with a Dicke coupling, as a paradigmatic example of strongly correlated light-matter systems.
Andreas Schellenberger, Kai Phillip Schmidt
doaj   +2 more sources

Experimental realization of the classical Dicke model

open access: yesPhysical Review Research, 2020
We report the experimental implementation of the classical description of the Dicke model whose quantum version describes a large number of two-level atoms interacting with a single-mode electromagnetic field in a perfectly reflecting cavity.
Mario A. Quiroz-Juárez   +4 more
doaj   +2 more sources

Different Effects of Induced Plant Defense on Population Densities of Specialist and Generalist Insects: An Explanation by Mathematical Modeling. [PDF]

open access: yesEcol Evol
Induced defense chemicals in plants determine the community structure of different insect (herbivore) groups. In particular, specialists are endemic and generalists are non‐endemic in the wild because of the ecological roles of induced secondary metabolites.
Chakraborty S, Schuster S.
europepmc   +2 more sources

Dicke and Fano-Andreev reflections in a triple quantum-dot system

open access: yesScientific Reports, 2021
This article studies quantum interference effects and their influence on the electronic transport through a parallel triple quantum-dot system coupled to normal and superconducting leads in the linear response and non-equilibrium regime.
A. González I.   +4 more
doaj   +1 more source

Quantum resources for energy storage [PDF]

open access: yesEPJ Web of Conferences, 2020
Recently the possibility to exploit quantum-mechanical effects to increase the performance of energy storage has raised a great interest. It consists of N two-level systems coupled to a single photonic mode in a cavity.
Ferraro Dario   +4 more
doaj   +1 more source

Dynamics of nonequilibrium Dicke models [PDF]

open access: yes, 2012
Motivated by experiments observing self-organization of cold atoms in optical cavities we investigate the collective dynamics of the associated non-equilibrium Dicke model.
Keeling, J   +7 more
core   +1 more source

Floquet engineering of non-equilibrium superradiance

open access: yesSciPost Physics, 2023
We demonstrate the emergence of a non-equilibrium superradiant phase in the dissipative Rabi-Dicke model. This phase is characterized by a photonic steady state that oscillates with a frequency close to the cavity frequency, in contrast to the constant ...
Lukas Broers, Ludwig Mathey
doaj   +1 more source

Generalized Brans–Dicke inflation with a quartic potential

open access: yesNuclear Physics B, 2017
Within the framework of Brans–Dicke gravity, we investigate inflation with the quartic potential, λφ4/4, in the presence of generalized Brans–Dicke parameter ωGBD(φ). We obtain the inflationary observables containing the scalar spectral index, the tensor-
Behzad Tahmasebzadeh, Kayoomars Karami
doaj   +1 more source

Reconsidering holographic dark energy in Brans–Dicke theory

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
In this paper, we reconsider the concept of holographic dark energy in the framework of Brans–Dicke theory in the formalism of the flat Friedmann–Lemaitre–Robertson–Walker metric.
Pinki, Pankaj Kumar, Aroonkumar Beesham
doaj   +1 more source

Dicke phase transition with multiple superradiant states in quantum chaotic resonators [PDF]

open access: yes, 2014
A. F. acknowledges funding from KAUST (Grant No. CRG-1-2012-FRA-005). A. D. F. acknowledges support from the EPSRC (Fellowships No. EP/I004602/1 and No. EP/J004200/1).We experimentally investigate the Dicke phase transition in chaotic optical resonators ...
Liu, Changxu   +6 more
core   +1 more source

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