IGFAE Retreat 2017

Centro de Estudos Avanzados (Santiago de Compostela)

Centro de Estudos Avanzados

Santiago de Compostela

Hector Alvarez Pol (Universidad de Santiago de Compostela) , Ricardo Vazquez (IGFAE) , Xabier Cid Vidal (Universidade de Santiago de Compostela)
    • 09:00 09:15
      Introduction and Welcome 15m
      Speaker: Carlos Albert Salgado Lopez (Universidade de Santiago de Compostela (ES))
    • 09:15 11:30
      Convener: Xabier Cid Vidal (Universidade de Santiago de Compostela)
      • 09:15
        RL1. Beyond the SM searches with the LHCb 30m
        Speaker: Diego Martinez Santos (Universidade de Santiago de Compostela (ES))
      • 09:45
        LFV searches 10m

        In the Standard Model, the three charged lepton are identical copies of each other, apart from mass differences. Experimental tests of this feature in rare and semileptonic decays of b hadrons are highly sensitive to New Physics particles which preferentially couple to the 3rd generation. This talk will review the latest lepton universality tests published by the LHCb collaboration..

        Speaker: Maria Vieites Diaz (Universidade de Santiago de Compostela (ES))
      • 09:55
        CPV in Bs->K*K* 10m
        Speaker: Julian Garcia Pardinas (Universidade de Santiago de Compostela (ES))
      • 10:05
        VELO upgrade 10m
        Speaker: Edgar Lemos Cid (Universidade de Santiago de Compostela (ES))
      • 10:15
        RL2. Hot and dense QCD in the LHC era and beyond 20m
        Speaker: Nestor Armesto Perez (Universidade de Santiago de Compostela (ES))
      • 10:35
        Jet quenching in heavy ion collisions: medium modification for color-correlated systems of particles 10m

        Jet quenching has long been considered one of the key measurements to prove the formation of a quark-gluon plasma in heavy ion collisions. Hard partons created in the early stages must travers the medium created in the collision, losing energy as they interact with strong color fields, yielding to a suppression in the high pt spectrum as compared to an incoherent sum of proton-proton collisions. New developments at LHC and RHIC have allowed us to move from single particle measurements to reconstructed jets, creating a demand for new tools that would allow us to understand how jets, as multi-particle objects, interact with the medium and how their modification can provide information about the properties of the medium. In this talk I will focus in the role played by color coherence in calculating the energy loss and inner modification of jets.

        Speaker: Fabio Dominguez (Universidade de Santiago de Compostela)
      • 10:45
        Fast hydrodynamization with bulk viscosity 10m

        Ever since the discovery of the quark-gluon plasma the understanding of its fast thermalization has been a topic of intense research. We use the gauge/gravity duality to model the out-of-equilibrium first stage of a heavy ion collision through the collision of gravitational shockwaves in numerical relativity. This investigation of collisions of sheets of energy density in a non-conformal theory with a gravity dual is the first non-conformal holographic simulation of a heavy ion collision. We demonstrate new non-conformal physics that arises (as compared to the much simpler conformal case) such as a new plasma relaxation channel, the equilibration of the conformal symmetry breaking scalar condensate and the presence of a sizeable bulk viscosity. These ingredients are crucial to make contact of the fast hydrodynamization process of hot plasmas with real-world QCD deconfinement matter.

        Speaker: Maximilian Attems (Technical University Vienna)
      • 10:55
        Baryon-baryon anticorrelations and the double helix structure of the Pomeron 10m

        The anticorrelation baryon baryon in azimuthal angle recently seen by the ALICE collaboration is explained by the double helix structure of the Pomeron obtained from the topological cylender shape plus local transverse momentum conservation.

        Speaker: Carlos Pajares Vales (Universidade de Santiago de Compostela (ES))
      • 11:05
        Discussion 25m
    • 11:30 11:50
      Coffee Break 20m
    • 11:50 13:00
      • 11:50
        RL3. String theory and relation with other fields 20m
        Speaker: Javier Mas (IGFAE)
      • 12:10
        Anisotropic D3-D5 black holes with unquenched flavors 10m

        We construct a black hole geometry generated by the intersection of Nc color D3- branes and Nf flavor D5-branes along a 2+1 dimensional subspace. Working in the Veneziano limit in which Nf is large and distributing homogeneously the D5-branes in the internal space, we calculate the solution of the equations of motion of supergravity plus sources which includes the backreaction of the flavor branes. The solution is analytic and dual to a 2+1 dimensional defect in a 3+1 dimensional gauge theory, with Nf massless hypermultiplets living in the defect. We study the thermodynamics of the resulting spatially anisotropic geometry and compute the first and second order transport coefficients for perturbations propagating along the defect.

        Speaker: Jose Manuel Penin (IGFAE)
      • 12:20
        Holographic Floquet Dynamics in Global AdS 10m

        I will talk about the dynamics of a scalar field in Anti-de Sitter spacetime in the presence of a time-periodic source. Through the AdS/CFT correspondence it describes the dynamics of a strongly coupled finite-size quantum system under a homogeneous periodic driving

        Speaker: Anxo Fariña (IGFAE)
      • 12:30
        Exact solutions for nuclei and neutron stars in an extended Skyrme model: Geometry and Topology applied to Strong Interactions non linear dynamics 10m

        We summarize with new insights and explanations our recent contributions [1] to the problem of strong interactions at scales beyond the attomic (10−18m) where QCD enters a nonperturbative regime, based on our generalized integrability approach [2]. It extends the exact methods of integrability and soliton theory in 2 dimensions to the physical 4 dimensions for relativistic effective fields relevant for QCD at large distances (light quark hadrons as nucleons and nuclei) and high densities ( nuclear matter and neutron stars). Specifically, we deal with the deep mesonic theory introduced in the sixties by Skyrme, where the nucleonic charge has a simple geometrical and topological origin. The elusive exact topological stability (BPS saturation ) and the related solvability was achieved in an extension of the model with natural physical motivation (vector meson exchange) and new symmetries (volume preserving diffeomorphisims) [3]. Equipped with exact solutions at the classical level, which explained the saturation of nuclear forces, we performed the semiclassical quantization to reproduce the nuclear spectra of medium and heavy nuclei (light ones require the old Skyrme model contribution). The simplicity of the equations also allows for solving the complete coupling to General Relativity, with back reaction, providing a simple semianalitical explanation of neutron stars, with exact equations of state. This opens the possibility for new phenomenology, and in fact the predictions for masses and compactness (larger than the current nuclear mean field approximations) are in line with the first of the many forthcoming new observations.

        [1] C. Adam, C. Naya, J. Sanchez-Guillen, R. Vazquez, A. Wereszczynski
        A BPS Skyrme model and Nuclear binding energies Phys. Rev.Lett 111, 232501 (2013).
        BPS Skyrmions as neutron stars Phys. Lett. B 742 (2015) 136.
        The Skyrme model in the BPS limit World Scientific, Singapore 2016.
        [2] O. Alvarez, L. Ferreira, J. Sanchez-Guillen. Integrable theory and loop spaces: fundamentals, applications and new developments Int.Journal of Mod.Phys. A 24, 1825-1888 (2009)
        [3] C. Adam, J. Sanchez-Guillen, A. Wereszczynski Skyrme-type proposal for baryonic matter
        Physics Letters B 691 (2010).

        Speaker: Joaquin Sanchez Guillen (IGFAE)
      • 12:40
        Discussion 20m
    • 13:00 14:10
      Convener: Prof. Ricardo Vazquez (IGFAE)
      • 13:00
        The Pierre Auger Observatory and the future of the Cosmic Rays 20m
        Speaker: Ines Valino (University of Santiago de Compostela)
      • 13:20
        About Trasgos and Microscopes 10m
        Speaker: Juan A. Garzon (Univ.)
      • 13:30
        RL5. Dark Matter and the nature of neutrinos – Low background experiments 20m

        Status of the present activities and presentation of future plans in rare event searches with neutrinos

        Speaker: Jose Angel Hernando Morata (Universidade de Santiago de Compostela (ES))
      • 13:50
        Discussion 20m
    • 14:10 15:20
      Lunch 1h 10m
    • 15:20 17:20
      Convener: Hector Alvarez Pol (Universidad de Santiago de Compostela)
      • 15:20
        RL6. The structure of the nuclear many-body systems and its astrophysical and cosmological implications (I) 20m
        Speaker: Jose Benlliure (University of Santiago de Compostela)
      • 15:40
        RL6. The structure of the nuclear many-body systems and its astrophysical and cosmological implications (II) 20m
        Speaker: Beatriz Fernandez Dominguez (Universidade de Santiago de Compostela (ES))
      • 16:00
        Fission dynamics and nuclear structure 10m

        Since its discovery, nuclear fission was understood as a complex and intricate phenomenon where macroscopic and microscopic degrees of freedom compete to drive the process. In a recent campaign, we were able to address this competition from the experimental point of view, gathering new observables that allow a direct comparison with nuclear models, shedding a new light on the role of shell effects on the fission process

        Speaker: Manuel Caamano Fresco (Universidade de Santiago de Compostela (ES))
      • 16:10
        RL6.2 10m
        Speaker: Pablo Cabanelas Eiras (IGFAE)
      • 16:20
        RL6.3 10m
        Speaker: Javier Diaz Cortes (IGFAE)
      • 16:30
        RL7. Commissioning and exploitation of the Laser Laboratory for Accelerator and Application 20m
        Speaker: Dolores Cortina Gil (IGFAE)
      • 16:50
        RL7.1 10m
        Speaker: Lucia Martin Blanco (IGFAE)
      • 17:00
        Discussion 20m
    • 17:20 17:45
      Coffee break 25m
    • 17:45 19:30
      Wrap-up and discussion of future strategies 1h 45m
      Speaker: Nestor Armesto Perez (Universidade de Santiago de Compostela (ES))
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