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Tzvetalina Stavreva (LPSC)24/05/2012, 09:00Physique des particulesParton distribution functions (PDFs) are of supreme importance in modern high energy physics. Firstly, they encode fundamental information on the structure of hadrons as probed in high energy reactions. Moreover, PDFs are an indispensable tool for the computation of cross sections at hadron colliders such as the LHC providing the link between the perturbatively calculable parton level cross...Go to contribution page
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Francois Arleo (LAPTH)24/05/2012, 09:20In this brief talk I will present various facets of the research carried out at LAPTh on the theory of the strong interaction (QCD), namely: - Loop calculations involving many external legs and the GOLEM library; - Prompt photon production at hadronic colliders: NLO calculations and phenomenology; - Studies on QCD at finite temperature and quark-gluon plasma formation in heavy-ion collisions.Go to contribution page
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Akin Wingerter (LPSC)24/05/2012, 09:40Physique des particulesWe highlight some of the shortcomings of the Standard Model and explain why we expect to find new physics around the TeV scale at the Large Hadron Collider (LHC) at CERN. We present some well-motivated scenarios for physics beyond the Standard Model like supersymmetry, grand unification, new gauge symmetries, extra dimensions and string theory, and show how our work at LPSC contributes to...Go to contribution page
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Suchita Kulkarni (LPSC)24/05/2012, 10:10Physique des particulesThe ongoing quest for finding what exists beyond the Standard Model of particle physics is driven by many of the observed phenomena like the dark matter, the origin of neutrino masses or the origin of the matter-antimatter asymmetry in the early universe. One of the most elegant extensions of the Standard Model of particle physics is Supersymmetry. It is theoretically well motivated and...Go to contribution page
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Pasquale Serpico (LAPTH)24/05/2012, 11:00I will briefly review the composition and the activities of the astrophysics and cosmology group at LAPTh. A sketch will be given of two representative topics of research in the two areas, namely indirect dark matter searches (and connections with cosmic ray astrophysics problems) and neutrino cosmology.Go to contribution page
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Abdelhak Djouadi (CERN)24/05/2012, 11:20Physique des particules
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Guillaume Drieu la Rochelle (LAPTH)24/05/2012, 12:10Physique des particulesSupersymmetry, being one of the most mainstream extensions of the Standard Model, is now being probed to a high level in different experimental studies. Though the direct searches for superpartners at the LHC are still confined to put lower bounds on squarks, it may not be the case in the Higgs sector, and on the other side the experimental searches for dark matter are getting sensitive to the...Go to contribution page
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Jean-Michel Maillet (ENS Lyon)24/05/2012, 14:00Systemes integrables
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Jean Avan (Université de Cergy)24/05/2012, 15:00Systemes integrablesA major feature of quantum integrable systems is the quantum group structure encapsulated in the Yang Baxter equation RTT = TTR. The presence of boundaries to a quantum integrable system imposes to complement it by the boundary equation RKRK = KRKR. In parallel consistent deformations of the YB algebra have been defined, leading to so-called dynamical Yang Baxter equations. The work presented...Go to contribution page
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James Drummond (LAPTh & CERN)24/05/2012, 16:00Systemes integrablesNowadays, the notion of integrability is also used in string theories. The celebrated AdS / CFT correspondence conjecture between conformal field theories in four dimensions and string theory in a 11 dimensional space entered a predictive phase, following a tremendous breakthrough made in recent years. This conjecture predicts equivalence between operators in conformal field theories (eg N =...Go to contribution page
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19. Positive current cross-correlations in a highly transparent normal-superconducting beam splitterRégis Melin (Institut Néel)24/05/2012, 16:30Systemes integrablesThe possibility of realizing in the future a source of spin-entangled pairs of electrons based on three-terminal normal metal-superconductor-normal metal structures has aroused considerable interest recently, both theoretical and experimental. The topic of available experiments is to measure either the current flowing in one of the normal electrodes in response to a voltage on the other...Go to contribution page
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Christoph Schenke (LPMMC)24/05/2012, 17:00Systemes integrablesRecent experimental activities of boson trapping on a ring geometry open the way to explore this novel topology. We focus on a tight ring trap with strong transverse confinement leading to an effectively one-dimensional motion along its circumference. We consider a strongly interacting Bose gas on the ring subjected to a localized barrier potential which is suddenly set into motion. The...Go to contribution page
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Julia Meyer24/05/2012, 17:30
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Prof. Ralf Everaers (Laboratoire de Physique et Centre Blaise Pascal, ENS-Lyon et CNRS)25/05/2012, 09:00Matiere molle/BiophysiqueDuring interphase chromosomes decondense, but fluorescent in situ hybridization experiments reveal the existence of distinct territories occupied by individual chromosomes inside the nuclei of most eukaryotic cells. We use computer simulations to show that the existence and stability of territories is a kinetic effect that can be explained without invoking an underlying nuclear scaffold or...Go to contribution page
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Dr Alice NICOLAS (Laboratoire des Technologies de la Microelectronique, CEA-CNRS-UJF)25/05/2012, 09:45Matiere molle/BiophysiqueCell adhesion has attracted the attention of physicists and engineers since it has become apparent that (i) managing it is a prerequisite to organize cells in a synthetic matrix for bioengineering applications, and (ii) that it could not be described with theories designed for dead matter, albeit sophisticated they are. The adhesion of cells to their surrounding medium begins with the...Go to contribution page
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Dr Olivier RIVOIRE (Laboratoire Interdisciplinaire de Physique Université Grenoble I et CNRS)25/05/2012, 11:00Matiere molle/BiophysiqueI will present work aimed at deciphering the relation between the sequence and function of proteins based on the principle of co-evolution. By analyzing statistically large numbers of related sequences, we can infer from this principle the patterns of functional couplings between amino acids in a protein. This analysis reveals a decomposition of proteins into evolutionary units that differs...Go to contribution page
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Dr Giovanni FEVERATI (Laboratoire d'Annecy de physique théorique, CNRS et Université de Savoie)25/05/2012, 11:45Matiere molle/BiophysiqueLiving organisms are made of nucleotides (DNA and RNA), lipids and proteins. All biological activities consist in interactions between those different entities. Identifying and rationalizing the interaction modes between partners is therefore crucial for investigating any biological problem. The interactions are encoded by patterns that are not easily inferred due to the large number of...Go to contribution page
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Alex Chin (University of Cambridge)25/05/2012, 14:00Energie et thermoelectriciteThe interactions between the environment and excitons generated by light harvesting in photosynthetic pigment-protein complexes (PPC) is a key part of the remarkable, often close to 100%, quantum efficiency of solar energy transduction in natural photosynthesis. The environmental fluctuations spectra in PPCs are known to be have significant frequency structure, including strong contributions...Go to contribution page
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Christophe Delerue (IEMN, Université de Lille)25/05/2012, 14:45Energie et thermoelectriciteCarrier-multiplication (CM) is a process in which more than one electron-hole pair is created as the result of the absorption of a single photon. CM in semiconductor quantum dots (QDs) has recently received considerable attention both experimentally and theoretically. But the results are subjects of important controversies and therefore it is still not clear whether CM in QDs has the potential...Go to contribution page
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Simone Fratini (Institut Néel)25/05/2012, 16:00Energie et thermoelectriciteBecause of the weakness of van der Waals inter-molecular bonds, organic semiconductors are commonly believed to stand in an intermediate region between the molecular limit and the extended band picture, calling for concepts that go beyond the standard paradigms of inorganic semiconductors. Experimental charge transport and optical studies of organic semiconductors over the past few years have...Go to contribution page
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Natalio Mingo (LITEN/LCH, CEA Grenoble)25/05/2012, 16:45Energie et thermoelectriciteSeveral novel types of nanostructured materials are emerging as potentially suitable for the development of high ZT thermoelectrics. Amongst them, Nanoparticle Embedded in Alloy Thermoelectric (NEAT) materials, offer a good opportunity for theoretical computations to predict thermoelectric properties and compare with experimental results. In this talk I will first discuss the theoretical...Go to contribution page
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