Nom de l’auteur/autrice :olivier.giraud

Des physiciens viennent de montrer que les techniques expérimentales actuelles devraient permettre de détecter et de caractériser la signature quantique du rayonnement émis par l’horizon d’un trou noir acoustique réalisé dans l’écoulement unidimensionnel d’un condensat de Bose Einstein. L’une des prédictions les plus marquantes du physicien théoricien Stephen Hawking est que les trous noirs gravitationnels […]

A réentendre sur France Culture: X. Campi et H. Krivine : La planète terre : des mythes à la physique  (émission du 9 septembre 2015) Egalement disponible à la réécoute: « Continent sciences », avec Stéphane Deligeorges H. Krivine : Les atomes existent-ils vraiment ? (émission du 1er juin 2015)

A collaboration between LPTMS and the biochemistry department of the University of Geneva sheds new light on endocytosis, a biological process localized at the cell membrane that results in the formation of transport compartments required for exchanges with the outside world. This study is published in the journal Nature Communications. A cage constituted of the

Physicists from our lab have recently proposed a mechanism explaining the emergence of the Tracy-Widom distribution in a wide variety of problems in physics and mathematics. They showed that this distribution is associated to the critical behavior of a system of interacting particles, in the vicinity of a third order phase transition. The universality of

par Christophe Texier www.dunod.com/sciences-techniques/sciences-fondamentales/physique-et-astrophysique/master-et-doctorat-capes-agreg/mecanique-quantiqu-4

Ref. : R. Dubertrand, I. García-Mata, B. Georgeot, O. Giraud, G. Lemarié, and J. Martin, Two scenarios for quantum multifractality breakdown, Phys. Rev. Lett. 112, 234101 (2014). The concept of fractal geometry was introduced by Mandelbrot in the seventies, to describe a range of phenomena characterized by the fact that a certain quantity has a

Contact: S. Brazovskii, brazov@lptms.u-psud.fr http://lptms.u-psud.fr/membres/brazov/ Femto-second optical techniques addressing pump-induced phase transitions (PIPT) put an ambitious goal to reach “hidden” states of matter – those which are not accessible and not known under equilibrium conditions or more conventional treatments. While there was a case of success in magnetic materials, there has been no success yet

D. Guéry-Odelin, J. G. Muga, M.J. Ruiz- Montero and E. Trizac, Exact non-equilibrium solutions of the Boltzmann equation under a time-dependent external force, Physical Review Letters 112, 180602 (2014) In 1872, Boltzmann established a key bridge between microscopic dynamics and macroscopic irreversibility, through the H theorem: a dilute gas thereby evolves towards equilibrium, where it

E. Gouillart, F. Krzakala, M. Mezard, L. Zdeborova, Belief propagation reconstruction for discrete tomography, Inverse Problems 29, 3, 035003 (2013) X-ray tomography is a widely used imaging technique that allows one to produce internal images in materials science or medical applications. An X-ray beam is transmitted through the sample and the projection is recorded on

Céline Nadal was awarded one of the three 2013 Best Paper Prizes by the IOP Journal of Physics A: Mathematical and Theoretical, for her paper « Purity distribution for generalized random Bures mixed states », in collaboration with Gaëtan Borot (University of Geneva). The aim of the prize is « to celebrate and applaud well written papers that