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Journées de Rencontre des Jeunes Chercheurs 2021

17–23 oct. 2021
Village La Fayette - La Rochelle
Fuseau horaire Europe/Paris

Secrétariat

Session

Theory

21 oct. 2021, 17:25
Village La Fayette - La Rochelle

Village La Fayette - La Rochelle

Avenue de Bourgogne, 17041 La Rochelle, France http://www.seminaire-conference-la-rochelle.org https://goo.gl/maps/c2X8hqd9maRShkCm8 The centre is located at about 5 km from the La Rochelle train station (Gare de La Rochelle) and at about 5 km from the La Rochelle airport (Aéroport de La Rochelle-Ile de Ré). The organization will provide a shuttle transportation from both the train station and the airport to the site in the evening of the first day, and from the site to the train station and the airport in the morning of the last day.

Présidents de session

Theory

  • Il n'a pas de président de session pour ce bloc

Theory

  • Luc Darmé (IP2I - CNRS)

Theory

  • Luc Darmé (IP2I - CNRS)

Documents de présentation

Aucun document.

  1. 83. Session overview
    Luc Darmé (IP2I - CNRS)
    21/10/2021 17:25
    Theory
  2. 73. Perturbative renormalization of the semi-infinite massive $\phi_4^4$ theory
    Majdouline Borji (CPT École Polytechnique)
    21/10/2021 17:55
    Theory

    We give a rigorous proof of the renormalization of the $\phi_4^4$ massive semi-infinite model using the renormalization group flow equations. We present the family of all admissible boundary conditions and the propagators associated to each boundary condition. Then we study the regularity properties of the support of the gaussian measure associated to the regularized propagator. We also...

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  3. 43. On the $B$-meson decay anomalies
    Jonathan Kriewald (LPC Clermont)
    22/10/2021 09:00
    Theory

    In the Standard Model electroweak interactions are strictly lepton flavour universal.
    In view of the emerging hints for the violation of lepton flavour universality in several $B$-meson decays, we conduct a model-independent study (effective field theory approach) of several well-motivated new physics scenarios.
    Taking into account the most recent LHCb data, we provide updates to New...

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  4. 64. New physics scenarios in the Non Minimal Flavour Violating MSSM
    Amine Boussejra (IP2I Lyon)
    22/10/2021 09:23
    Theory
  5. 24. Computation of relic densities within freeze-out mechanism
    Marco Palmiotto (Université Claude Bernard Lyon 1)
    22/10/2021 09:46
    Theory

    Since decades, our knowledge of fundamental physics is being challenged by astrophysical and cosmological observations, thus leading us to the hypothesis of the existence of the so-called dark matter. Nowadays, different approaches have been explored in order to describe the nature of such matter. One of them assumes that the dark matter is made of a stable particle not yet detected by...

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  6. 42. Solving (g-2) with a new light gauge boson
    Emanuelle Pinsard
    22/10/2021 10:09
    Theory

    "Final" abstract will be provided as a separate file

    Even if the SM describes fundamental interactions and particles extremely well, there are still some theoretical caveats and discrepancies between theory and observation.
    Starting from the anomalous magnetic moment of charged leptons (muon and electron), we minimally extend the SM via a new light gauge boson (Z’) and work under the...

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  7. 3. Analytic and Numerical Bootstrap for One-Matrix Model and "Unsolvable" Two-Matrix Model
    Zechuan Zheng (ENS ULM)
    22/10/2021 11:02
    Theory

    We propose the relaxation bootstrap method for the numerical solution of multi-matrix models in the large N limit, developing and improving the recent proposal of H.Lin. It gives rigorous inequalities on the single trace moments of the matrices up to a given "cutoff" order (length) of the moments. The method combines usual loop equations on the moments and the positivity constraint on the...

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  8. 51. Quantum dynamics beyond the independent particle picture
    Thomas CZUBA ({UNIV PARIS-SACLAY}UMR9012)
    22/10/2021 11:25
    Theory

    abstract will be provided as a separate file

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  9. 49. Microscopic interactions for the nuclear shell model
    Zhen Li (Centre d'Etudes Nucléaires de Bordeaux-Gradignan)
    22/10/2021 11:48
    Theory

    The interacting shell model is a modern many-body method used in nuclear structure calculations. The basic idea of the model is that the eigenproblem for a microscopic Hamiltonian is solved by diagonalization of the Hamiltonian matrix in a spherically-symmetric many-body basis (for example, a harmonic oscillator basis). The basis dimension grows very rapidly with increasing atomic number A....

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  10. 87. Shapes of heavy and super-heavy atomic nuclei with Skyrme Energy Density Functionals
    Philippe Da costa
    22/10/2021 12:11
    Theory

    The mean-field, or Energy Density Functional (EDF), methods allow for the study of energies and
    shapes of all nuclei, but the lightest ones, throughout the mass-table. These approach and their
    extensions such as the Random Phase Approximation (RPA) and Generator Coordinate Method (GCM)
    give access to observables from ground state, excited states and large-amplitude collective motion of...

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