Poincaré Seminar 2003

I: Bose-Einstein Condensation.- Claude COHEN-TANNOUDJI Bose-Einstein Condensation: An Introduction.- Sébastien BALIBAR Looking Back at Superfluid Helium 17.- Gora V. SHLYAPNIKOV Condensed Matter Approaches to Quantum Gases.- Jean DALIBARD and Christophe SALOMON Experiments with Cold Atoms.- Philippe NOZIÈRES Bose-Einstein Condensation and Quantum Coherence:From Superfluidity to Localization,from Fermi Liquids to Superconductors.- II: Entropy.- Olivier DARRIGOL The Origins of the Entropy Concept.- Roger BALIAN Entropy, a Protean Concept.- Christian MAES On the Origin and Use of Fluctuation Relationsfor the Entropy.- Félix RITORT Work Fluctuations, Transient Violations of the Second Law and Free-Energy Recovery Methods: Perspectives in Theory and Experiments.- Thibault DAMOUR The Entropy of Black Holes: A Primer.