The finite temperature QCD transition in external magnetic fields

G. S. Bali; F. Bruckmann; G. Endrodi; Z. Fodor; S. D. Katz; S. Krieg; A. Schäfer; K. K. Szabó

The finite temperature QCD transition in external magnetic fields

G. S. Bali, F. Bruckmann, G. Endrodi, Z. Fodor, S. D. Katz, S. Krieg, A. Schäfer, K. K. Szabó

Physics

Research output: Contribution to journal › Conference article › peer-review

2 Scopus citations

Abstract

The effect of an external magnetic field on the finite temperature transition of QCD is studied. We measure thermodynamic observables including the quark condensates and susceptibilities and the strange quark number susceptibility. We generate configurations at various values of the quantized magnetic flux with N _f = 2 + 1 flavors of stout smeared staggered quarks at physical quark masses. We perform the renormalization of our observables and approach the continuum limit with N_t = 6, 8 and 10 lattices. We also check finite volume effects using various lattice volumes. Our main result is that the transition temperature significantly decreases with growing magnetic field, and that the transition remains an analytic crossover up to our largest external field eB = 1 GeV.

Original language	English (US)
Journal	Proceedings of Science
Volume	139
State	Published - 2011
Event	29th International Symposium on Lattice Field Theory, Lattice 2011 - Squaw Valley, Lake Tahoe, United States Duration: Jul 10 2011 → Jul 16 2011

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@article{ada5baed55ea4c86824f75e767bf2c21,

title = "The finite temperature QCD transition in external magnetic fields",

abstract = "The effect of an external magnetic field on the finite temperature transition of QCD is studied. We measure thermodynamic observables including the quark condensates and susceptibilities and the strange quark number susceptibility. We generate configurations at various values of the quantized magnetic flux with N f = 2 + 1 flavors of stout smeared staggered quarks at physical quark masses. We perform the renormalization of our observables and approach the continuum limit with Nt = 6, 8 and 10 lattices. We also check finite volume effects using various lattice volumes. Our main result is that the transition temperature significantly decreases with growing magnetic field, and that the transition remains an analytic crossover up to our largest external field eB = 1 GeV.",

author = "Bali, {G. S.} and F. Bruckmann and G. Endrodi and Z. Fodor and Katz, {S. D.} and S. Krieg and A. Sch{\"a}fer and Szab{\'o}, {K. K.}",

note = "Funding Information: This work has been supported by DFG grants SFB-TR 55, FO 502/1-2 and BR 2872/4-2, the EU grants (FP7/2007-2013)/ERC no 208740 and PITN-GA-2009-238353 (ITN STRONGnet). Computations were carried out on the GPU cluster at the E{\"o}tv{\"o}s University in Budapest and on the Bluegene/P at FZ J{\"u}lich. We thank Ferenc Niedermayer for useful discussions, interesting ideas and for careful reading of the manuscript. G.E. would like to thank Massimo D{\textquoteright}Elia, Swagato Mukherjee, D{\'a}niel N{\'o}gr{\'a}di, Tam{\'a}s Kov{\'a}cs and Igor Shovkovy for useful discussions. Publisher Copyright: {\textcopyright} Copyright owned by the author(s).; 29th International Symposium on Lattice Field Theory, Lattice 2011 ; Conference date: 10-07-2011 Through 16-07-2011",

year = "2011",

language = "English (US)",

volume = "139",

journal = "Proceedings of Science",

issn = "1824-8039",

publisher = "Sissa Medialab Srl",

}

TY - JOUR

T1 - The finite temperature QCD transition in external magnetic fields

AU - Bali, G. S.

AU - Bruckmann, F.

AU - Endrodi, G.

AU - Fodor, Z.

AU - Katz, S. D.

AU - Krieg, S.

AU - Schäfer, A.

AU - Szabó, K. K.

N1 - Funding Information: This work has been supported by DFG grants SFB-TR 55, FO 502/1-2 and BR 2872/4-2, the EU grants (FP7/2007-2013)/ERC no 208740 and PITN-GA-2009-238353 (ITN STRONGnet). Computations were carried out on the GPU cluster at the Eötvös University in Budapest and on the Bluegene/P at FZ Jülich. We thank Ferenc Niedermayer for useful discussions, interesting ideas and for careful reading of the manuscript. G.E. would like to thank Massimo D’Elia, Swagato Mukherjee, Dániel Nógrádi, Tamás Kovács and Igor Shovkovy for useful discussions. Publisher Copyright: © Copyright owned by the author(s).

PY - 2011

Y1 - 2011

N2 - The effect of an external magnetic field on the finite temperature transition of QCD is studied. We measure thermodynamic observables including the quark condensates and susceptibilities and the strange quark number susceptibility. We generate configurations at various values of the quantized magnetic flux with N f = 2 + 1 flavors of stout smeared staggered quarks at physical quark masses. We perform the renormalization of our observables and approach the continuum limit with Nt = 6, 8 and 10 lattices. We also check finite volume effects using various lattice volumes. Our main result is that the transition temperature significantly decreases with growing magnetic field, and that the transition remains an analytic crossover up to our largest external field eB = 1 GeV.

AB - The effect of an external magnetic field on the finite temperature transition of QCD is studied. We measure thermodynamic observables including the quark condensates and susceptibilities and the strange quark number susceptibility. We generate configurations at various values of the quantized magnetic flux with N f = 2 + 1 flavors of stout smeared staggered quarks at physical quark masses. We perform the renormalization of our observables and approach the continuum limit with Nt = 6, 8 and 10 lattices. We also check finite volume effects using various lattice volumes. Our main result is that the transition temperature significantly decreases with growing magnetic field, and that the transition remains an analytic crossover up to our largest external field eB = 1 GeV.

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M3 - Conference article

AN - SCOPUS:84880465755

SN - 1824-8039

VL - 139

JO - Proceedings of Science

JF - Proceedings of Science

T2 - 29th International Symposium on Lattice Field Theory, Lattice 2011

Y2 - 10 July 2011 through 16 July 2011

ER -

The finite temperature QCD transition in external magnetic fields

Abstract

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