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    • Several versions

    Chiral Magnetic Effect in the Dirac-Heisenberg-Wigner formalism

    Berényi, Dániel, Lévai, Péter
    arXiv.org, May 11, 2018 [Peer Reviewed Journal]

    • Several versions

    Pair production at the edge of the QED flux tube

    Berényi, Dániel
    Physics Letters B, 26 April 2017 [Peer Reviewed Journal]

    • Several versions

    Chiral Magnetic Effect in the Dirac-Heisenberg-Wigner formalism

    Berényi, Dániel, Lévai, Péter
    arXiv.org, Dec 16, 2017

    • Several versions

    Simulation of Pair Production in Extreme Strong EM Fields

    Berényi, Dániel, Lévai, Péter, Skokov, Vladimir
    arXiv.org, May 5, 2012 [Peer Reviewed Journal]

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    Testing and improving shear viscous phase space correction models

    Damodaran, Mridula, Molnar, Denes, Berényi, Dániel
    arXiv.org, Jul 4, 2017
    © ProQuest LLC All rights reserved, Engineering Database, Publicly Available Content Database, ProQuest Engineering Collection, ProQuest Technology Collection, ProQuest SciTech Collection, Materials Science & Engineering Database, ProQuest Central (new), ProQuest Central Korea, SciTech Premium Collection, Technology Collection, ProQuest Central Essentials, ProQuest One Academic, Engineering Collection (ProQuest)
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    Title: Testing and improving shear viscous phase space correction models
    Author: Damodaran, Mridula; Molnar, Denes; Berényi, Dániel
    Contributor: Berényi, Dániel (pacrepositoryorg)
    Subject: Accuracy ; Conversion ; Space Density ; Relaxation Time ; Viscous Fluids ; Kinetic Theory ; Computer Simulation ; Shear Viscosity
    Description: Comparison of hydrodynamic calculations with experimental data inevitably requires a model for converting the fluid to particles. In this work, nonlinear \(2\to 2\) kinetic theory is used to assess the overall accuracy of various shear viscous fluid-to-particle conversion models, such as the quadratic Grad corrections, the Strickland-Romatschke (SR) ansatz, self-consistent shear corrections from linearized kinetic theory, and the correction from the relaxation time approach. We test how well the conversion models can reconstruct, using solely the hydrodynamic fields computed from the transport, the phase space density for a massless one-component gas undergoing a 0+1D longitudinal boost-invariant expansion with approximately constant specific shear viscosity in the range \(\sim 0.03 \le \eta/s \le \sim 0.2\). In general we find that at early times the SR form is the most accurate, whereas at late times or for small \(\eta/s\sim 0.05\) the self-consistent corrections from kinetic theory...
    Is part of: arXiv.org, Jul 4, 2017
    Identifier: 2331-8422 (E-ISSN)

    • Several versions

    Towards scalable pattern-based optimization for dense linear algebra

    Berényi, Dániel, Leitereg, András, Lehel, Gábor
    arXiv.org, May 11, 2018 [Peer Reviewed Journal]

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    Describing pair production in inhomogeneous external fields with the Dirac-Heisenberg-Wigner formalism

    Berényi Dániel, Varró Sándor, Lévai Péter, Skokov Vladimir V
    EPJ Web of conferences, 01 January 2014, Vol.78, p.03001 [Peer Reviewed Journal]
    Directory of Open Access Journals (DOAJ)
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    Title: Describing pair production in inhomogeneous external fields with the Dirac-Heisenberg-Wigner formalism
    Author: Berényi Dániel; Varró Sándor; Lévai Péter; Skokov Vladimir V
    Subject: Physics
    Description: In this contribution we present results on pair production from vacuum in QED in case of inhomogeneous external electric fields. The central tool of our description is the relativistic one particle single-time Wigner-function, that describes the evolution of the e+e− densities in phase-space. We compare the influence of homogeneous and inhomogeneous external fields, and find that the inhomogeneity near the Compton-scale increases particle production proportionally to the duration of the electric pulse. We also find, that when the inhomogeneity is restricted to a single direction, a significant component of the pair yield originates from the edge or surface where the electric field gradients are large, in agreement with the prediction of Heisenberg.
    Is part of: EPJ Web of conferences, 01 January 2014, Vol.78, p.03001
    Identifier: 2100-014X (E-ISSN); 10.1051/epjconf/20147803001 (DOI)

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    Anomalous baryon production in heavy ion collisions at LHC energies

    Berényi, Dániel, Pásztor, Attila, Skokov, Vladimir, Lévai, Péter
    Cornell University
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    Title: Anomalous baryon production in heavy ion collisions at LHC energies
    Author: Berényi, Dániel; Pásztor, Attila; Skokov, Vladimir; Lévai, Péter
    Subject: High Energy Physics - Phenomenology ; Nuclear Theory
    Description: In ultrarelativistic heavy ion collisions the baryon-meson ratio is not fully understood in the intermediate-to-high transverse momentum region. Although quark coalescence methods combined with jet fragmentation yield results close to the experimental data, some tendencies are not reproduced and require further investigation. We propose a new channel, namely extra quark-antiquark and diquark-antidiquark pair production from coherent gluon field created in the early stage of heavy ion collisions. This process is described quantitatively by the time-dependent Schwinger-mechanism. The extra diquark-quark coalescence yields are able to explain the measured anomalous baryon production. Comment: 7 pages, 9 figures
    Identifier: 1208.0448 (ARXIV ID)

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    Pair production at the edge of the QED flux tube

    Berényi, Dániel, Varró, Sándor, Skokov, Vladimir, Lévai, Péter
    arXiv.org, Dec 30, 2013
    © ProQuest LLC All rights reserved, Engineering Database, Publicly Available Content Database, ProQuest Engineering Collection, ProQuest Technology Collection, ProQuest SciTech Collection, Materials Science & Engineering Database, ProQuest Central (new), ProQuest Central Korea, SciTech Premium Collection, Technology Collection, ProQuest Central Essentials, ProQuest One Academic, Engineering Collection (ProQuest)
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    Title: Pair production at the edge of the QED flux tube
    Author: Berényi, Dániel; Varró, Sándor; Skokov, Vladimir; Lévai, Péter
    Contributor: Lévai, Péter (pacrepositoryorg)
    Subject: Time Dependence ; Electric Fields ; Pair Production ; Inhomogeneity ; Ionic Collisions
    Description: We investigate the process of Abelian pair production in the presence of strong inhomogeneous and time-dependent external electric fields. The spatial dependence of the external field is motivated by a non-Abelian color flux tube in heavy-ion collisions. We show that the inhomogeneity significantly increase the particle yield compared to that in the commonly used models with a constant and homogeneous field. Moreover our results indicate that in contrast to the latter, most of the particles are produced at the interface of the field profile in accordance with Heisenberg's prediction.
    Is part of: arXiv.org, Dec 30, 2013
    Identifier: 2331-8422 (E-ISSN)

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    Pair production at the edge of the QED flux tube

    Berényi, Dániel, Varró, Sándor, Skokov, Vladimir V., Lévai, Péter
    Cornell University
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    Title: Pair production at the edge of the QED flux tube
    Author: Berényi, Dániel; Varró, Sándor; Skokov, Vladimir V.; Lévai, Péter
    Subject: High Energy Physics - Phenomenology
    Description: We investigate the process of Abelian pair production in the presence of strong inhomogeneous and time-dependent external electric fields. The spatial dependence of the external field is motivated by a non-Abelian color flux tube in heavy-ion collisions. We show that the inhomogeneity significantly increase the particle yield compared to that in the commonly used models with a constant and homogeneous field. Moreover our results indicate that in contrast to the latter, most of the particles are produced at the interface of the field profile in accordance with Heisenberg's prediction. Comment: 6 pages, 6 figures
    Identifier: 1401.0039 (ARXIV ID)