2012

Wave pattern induced by a localized obstacle in the flow of a one-dimensional polariton condensate – Archive ouverte HAL

P.-É. Larré 1 N. PavloffA. M. Kamchatnov P.-É. Larré, N. Pavloff, A. M. Kamchatnov. Wave pattern induced by a localized obstacle in the flow of a one-dimensional polariton condensate. Physical Review B, American Physical Society, 2012, 86, pp.165304. ⟨10.1103/PhysRevB.86.165304⟩. ⟨hal-03538641⟩ Motivated by recent experiments on generation of wave patterns by a polariton condensate incident on …

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Archive ouverte HAL – From Weak- to Strong-Coupling Mesoscopic Fermi Liquids

Dong E. Liu 1 Sébastien Burdin 2 Harold U. Baranger 1 Denis Ullmo 3 EPL – Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2012, 97 (1), pp.17006. 〈10.1209/0295-5075/97/17006〉 We study mesoscopic fluctuations in a system in which there is a continuous connection between two distinct Fermi liquids, asking whether the mesoscopic variation …

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Archive ouverte HAL – Mesoscopic Anderson Box: Connecting Weak to Strong Coupling

Dong E. Liu 1, * Sébastien Burdin 2 Harold U. Baranger 1 Denis Ullmo 3 Physical Review B : Condensed matter and materials physics, American Physical Society, 2012, 85 (15), pp.155455 (1-17). 〈10.1103/PhysRevB.85.155455〉 Both the weakly coupled and strong coupling Anderson impurity problems are characterized by a Fermi-liquid theory with weakly interacting quasiparticles. In an …

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Finite-temperature and finite-time scaling of the directed polymer free-energy with respect to its geometrical fluctuations

Elisabeth Agoritsas 1, * Sebastian Bustingorry 2 Vivien Lecomte 3 Gregory Schehr 4 Thierry Giamarchi 1 Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, American Physical Society, 2012, 86 (3), pp.031144. <10.1103/PhysRevE.86.031144> We study the fluctuations of the directed polymer in 1+1 dimensions in a Gaussian random environment with a finite correlation length …

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Scanning-Tunneling Microscope Imaging of Single-Electron Solitons in a Material with Incommensurate Charge-Density Waves

Serguei Brazovskii 1 Christophe Brun 2 Zhao-Zhong Wang 2 Pierre Monceau 3 Physical Review Letters, American Physical Society, 2012, 108 (9), pp.096801. <10.1103/PhysRevLett.108.096801> We report on scanning-tunneling microscopy experiments in a charge-density wave (CDW) system allowing visually capturing and studying in detail the individual solitons corresponding to the self-trapping of just one electron. This « Amplitude …

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Membrane shape at the edge of the dynamin helix sets location and duration of the fission reaction.

Sandrine Morlot 1, 2 Valentina Galli 1 Marius Klein 2 Nicolas Chiaruttini 3 John Manzi 2 Frédéric Humbert 1 Luis DinisMartin Lenz 4 Giovanni Cappello 2 Aurélien Roux 1 Cell, Elsevier (Cell Press), 2012, 151 (3), pp.619-29 The GTPase dynamin polymerizes into a helical coat that constricts membrane necks of endocytic pits to promote their …

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Charge-density waves studied at the surface and at the atomic scale in NbSe3

Pierre Monceau 1 C. Brun 2 Zhao-Zhong Wang 2 S. Brazovskii 3 Physica B: Condensed Matter, Elsevier, 2012, 407 (11), pp.1845 We have studied by scanning tunneling microscopy (STM) the two charge-density wave (CDW) transitions in NbSe3 on in situ cleaved (b,c) plane. We could identify the three types of chains existing inside a single …

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Internship: Étude de quelques problèmes de théorie des jeux à champ moyen

PROPOSITION DE SUJET DE STAGE DE M2 Responsable: Denis Ullmo 01 69 15 74 76 La théorie des jeux [1] propose d’étudier sur des modèles simples les stratégies optimales d’agents dans des situations où la conséquence d’un choix dépend des choix faits par le ou les autres agents, et donc de l’anticipation qu’on peut en …

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Internship: Décohérence par les interactions électroniques en géométrie confinée

PROPOSITION DE SUJET DE STAGE DE M2 Responsable : Christophe TEXIER 01 69 15 79 19 L’analyse de la cohérence de phase dans les métaux est une des questions les plus fondamentales en physique mésoscopique, qui questionne la capacité des électrons à réaliser des interférences quantiques. En dessous de 1K, le processus dominant la décohérence …

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