This title appears in the Scientific Report :
2012
Please use the identifier:
http://dx.doi.org/10.1007/JHEP02(2012)044 in citations.
The QCD phase diagram for external magnetic fields
The QCD phase diagram for external magnetic fields
The effect of an external (electro) magnetic field on the finite temperature transition of QCD is studied. We generate configurations at various values of the quantized magnetic flux with N-f = 2 + 1 flavors of stout smeared staggered quarks, with physical masses. Thermodynamic observables including...
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Personal Name(s): | Bali, G.S. |
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Bruckmann, F. / Endrödi, G. / Fodor, Z. / Katz, S.D. / Krieg, S. / Schäfer, A. / Szabó, K.K. | |
Contributing Institute: |
Jülich Supercomputing Center; JSC |
Published in: | Journal of high energy physics (2012) S. 44 |
Imprint: |
Berlin
Springer
2012
|
Physical Description: |
44 |
DOI: |
10.1007/JHEP02(2012)044 |
Document Type: |
Journal Article |
Research Program: |
Strong Interaction Supercomputing Training Network QCD thermodynamics on the lattice Computational Science and Mathematical Methods Scientific Computing |
Series Title: |
Journal of High Energy Physics
|
Subject (ZB): | |
Publikationsportal JuSER |
The effect of an external (electro) magnetic field on the finite temperature transition of QCD is studied. We generate configurations at various values of the quantized magnetic flux with N-f = 2 + 1 flavors of stout smeared staggered quarks, with physical masses. Thermodynamic observables including the chiral condensate and susceptibility, and the strange quark number susceptibility are measured as functions of the field strength. We perform the renormalization of the studied observables and extrapolate the results to the continuum limit using N-t = 6, 8 and 10 lattices. We also check for finite volume effects using various lattice volumes. We find from all of our observables that the transition temperature T c significantly decreases with increasing magnetic field. This is in conflict with various model calculations that predict an increasing T-c(B). From a finite volume scaling analysis we find that the analytic crossover that is present at B = 0 persists up to our largest magnetic fields e B approximate to 1 GeV2, and that the transition strength increases mildly up to this e B approximate to 1 GeV2. |