208 citations
- Département de mathématiques et applicationsFR17 papers
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4 papers · 1 filter
New asymptotic behaviour of the surface-atom force out of thermal equilibrium
Mauro Antezza, Lev P. Pitaevskii, Sandro Stringari
The Casimir-Polder-Lifshitz force felt by an atom near the surface of a substrate is calculated out of thermal equilibrium in terms of the dielectric function of the material and o…
Magnetostriction in an array of spin chains under magnetic field
E. Orignac, R. Citro
We consider an array of XX spin-1/2 chains coupled to acoustic phonons and placed in a magnetic field. Treating the phonons in the mean field approximation, we show that this syste…
Scale Invariance and Self-averaging in disordered systems
Giorgio Parisi, Marco Picco, Nicolas Sourlas
In a previous paper we found that in the random field Ising model at zero temperature in three dimensions the correlation length is not self-averaging near the critical point and t…
Extension of Bogoliubov theory to quasi-condensates
Christophe Mora, Yvan Castin
We present an extension of the well-known Bogoliubov theory to treat low dimensional degenerate Bose gases in the limit of weak interactions and low density fluctuations. We use a…