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(180) Production(s) de ANTEZZA M.
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Casimir-Lifshitz force out of thermal equilibrium and heat transfer between arbitrary bodies 
Auteur(s): Messina R., Antezza M.
(Article) Publié:
Europhysics Letters (Epl), vol. 95 p.61002 (2011)
Texte intégral en Openaccess : 
Ref HAL: hal-00556819_v1
Ref Arxiv: 1012.5183
DOI: 10.1209/0295-5075/95/61002
WoS: 000294996600011
Ref. & Cit.: NASA ADS
Exporter : BibTex | endNote
80 Citations
Résumé: We study the Casimir-Lifshitz force and the radiative heat transfer occurring between two arbitrary bodies, each one held at a given temperature, surrounded by environmental radiation at a third temperature. The system, in stationary configuration out of thermal equilibrium, is characterized by a force and a heat transfer depending on the three temperatures, and explicitly expressed in terms of the scattering operators of each body. We find a closed-form analytic expression valid for bodies of any geometry and dielectric properties. As an example, the force between two parallel slabs of finite thickness is calculated, showing the importance of the environmental temperature as well as the occurrence of a repulsive interaction. An analytic expression is also provided for the force acting on an atom in front of a slab. Our predictions can be relevant for experimental and technological purposes.
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Light propagation in a periodic ensemble of ultracold atoms
Auteur(s): Antezza M.
Conférence invité: CEWQO2009 (Turku, FI, 2009-05-25)
Ref HAL: hal-01910115_v1
Exporter : BibTex | endNote
Résumé: We address the general problem of the excitation spectrum for light coupled to scatterers having
quantum fluctuating positions around the sites of a periodic lattice. In addition to providing an imaginary
part to the spectrum, we show that these quantum fluctuations affect the real part of the spectrum, in a way
that we determine analytically. Our predictions may be observed with ultracold atoms in an optical lattice,
on a J 1⁄4 0 ! J0 1⁄4 1 narrow atomic transition. As a side result, we resolve a controversy for the
occurrence of a spectral gap in a fcc lattice.
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Casimir-Lifshitz Force Out of Thermal Equilibrium and Asymptotic Nonadditivity
Auteur(s): Antezza M.
Conférence invité: QFEXT’09 : “Quantum Field Theory Under the Influence of External Condition” (Norman, Oklahoma, US, 2009-09-23)
Ref HAL: hal-01910108_v1
Exporter : BibTex | endNote
Résumé: We investigate the force acting between two parallel plates held at different temperatures. The force reproduces, as limiting cases, the well-known Casimir-Lifshitz surface-surface force at thermal equilibrium and the surface-atom force out of thermal equilibrium recently derived by M. Antezza et al., Phys. Rev. Lett. 95, 113202 (2005). The asymptotic behavior of the force at large distances is explicitly discussed. In particular when one of the two bodies is a rarefied gas the force is not additive, being proportional to the square root of the density. Nontrivial crossover regions at large distances are also identified.
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Elementary excitations of the atom-light field in periodic ultracold atomic gases
Auteur(s): Antezza M.
(Séminaires)
LPMMC (Grenoble, FR), 2009-02-02 |
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Atom-light elementary excitations in a periodic ensemble of ultracold atoms
Auteur(s): Antezza M.
(Séminaires)
École Normale Supérieure de Lyon (Lyon, FR), 2009-02-26 |
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Atom-light elementary excitations in a periodic ensemble of ultracold atoms
Auteur(s): Antezza M.
(Séminaires)
École Normale Supérieure (Paris, FR), 2009-03-06 |
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Atom-light elementary excitations in a periodic ensemble of ultracold atoms
Auteur(s): Antezza M.
(Séminaires)
LPTMS (Orsay, FR), 2009-04-01 |
