SUBMIT TALK INFORMATION

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Anonymous (not verified) New involvement of ICCUB in international collaborations D. Gascon, J. Portell ICCUB dgascon@fqa.ub.edu The ICCUB has recently joined international collaborations as Virgo, IAXO and HERD. We will introduce the projects and we will describe the technological contributions of the ICCUB.
Anonymous (not verified) Gravitational waves and fundamental physics Roberto Emparan ICREA+ICCUB emparan@ub.edu I will present an overview of what we can learn about fundamental physics from upcoming observations of gravitational waves
Anonymous (not verified) Testing Dark Energy using spectroscopic galaxy surveys: BAO and RSD Hector Gil Marin ICCUB hectorgil@icc.ub.edu In this talk I will review the state-of-the-art techniques for measuring the expansion of the Universe using massive spectroscopic galaxy surveys datasets, focusing on the Baryon Acoustic Oscillation (BAO) and Redshift Space Distortion (RSD) techniques. I will also present the most relevant results from BOSS and eBOSS surveys, and the forecasts for upcoming surveys Euclid and DESI.
Anonymous (not verified) Modeling dark matter halo substructure with the CUSP formalism. Ignacio Botella Lasaga UB nachobotella@ub.edu The ConflUent System of Peak trajectories (CUSP) is a rigorous analytic formalism allowing one to accurately recover the typical structural and kinematic properties of DM halos in hierarchical cosmologies. This is done by monitoring the ellipsoidal collapse and virialization (through shell-crossing) of their seeds, i.e. peaks in the initial Gaussian random field of density perturbations. In this talk I will show that CUSP also allows one to model halo substructure. Specifically, taking into account the statistics of peaks nested within other peaks, one can derive the properties of subhalos accreted onto halos and, by monitoring their tidal stripping by the halo potential well, one can reproduce the abundance and spatial distribution of stripped subhalos. In this way we recover the observed trends of halo substructure found in simulations and reveal the origin of the three conditions shown by Han et al. (2016) to explain such trends.
Anonymous (not verified) An Initial State with shear and vorticity for non-central heavy ion collisions V.K. Magas FQA, University of Barcelona vladimir@fqa.ub.edu Recent experimental and theoretical developments indicate that a strong initial angular momentum, which is present in non-central collisions, has to be taken into account for a detailed simulation of the reactions. As a consequence of this large initial angular momentum we observe not only a overall system rotation, but also a strong fluid shear in the initial state, which leads to large flow vorticity and subsequent particle polarization: a significant Λ polarization was detected and analyzed in detail in the RHIC BES program [1].

More than 15 years ago an effective string rope model was proposed [2] to construct nucleus-nucleus collision initial state for realistic 3+1D relativistic fluid dynamical models. This model reflected correctly not only the energy-momentum, but also angular momentum, conservations, initial shear flow and local vorticity [3]. On the other hand, recent developments in parton kinetic and field dominance models provide a rather different initial state configuration, more compact for non-central collisions, see for example [4], what makes us revisit the our initial state model in that direction [5].


[1] L. Adamczyk et al. (The STAR Collaboration), Nature 548 (2017) 62.
[2] V.K. Magas, L.P. Csernai, D.D. Strottman, Phys. Rev. C64 (2001) 014901; Nucl. Phys. A712 (2002) 167.
[3] L.P. Csernai, V.K. Magas, D.J. Wang, Phys. Rev. C87 (2013) 034906.
[4] L.G. Pang, H. Petersen, G.Y. Qin, V. Roy and X.N. Wang, Nucl. Phys. A956 (2016) 272.
[5] V.K. Magas, J. Gordillo, D.D. Strottman, Y.L. Xie and L.P. Csernai, Phys. Rev. C97 (2018) no.6, 064903.