Inverse magnetic catalysis and the Polyakov loop

Bruckmann F, Endrödi G, Kovács TG (2013)
Journal of High Energy Physics 2013(4): 112.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
Download
Es wurden keine Dateien hochgeladen. Nur Publikationsnachweis!
Autor*in
Bruckmann, Falk; Endrödi, GergelyUniBi; Kovács, Tamás G.
Abstract / Bemerkung
We study the physical mechanism of how an external magnetic field influences the QCD quark condensate. Two competing mechanisms are identified, both relying on the interaction between the magnetic field and the low quark modes. While the coupling to valence quarks enhances the condensate, the interaction with sea quarks suppresses it in the transition region. The latter “sea effect” acts by ordering the Polyakov loop and, thereby, reduces the number of small Dirac eigenmodes and the condensate. It is most effective around the transition temperature, where the Polyakov loop effective potential is flat and a small correction to it by the magnetic field can have a significant effect. Around the critical temperature, the sea suppression overwhelms the valence enhancement, resulting in a net suppression of the condensate, named inverse magnetic catalysis. We support this physical picture by lattice simulations including continuum extrapolated results on the Polyakov loop as a function of temperature and magnetic field. We argue that taking into account the increase in the Polyakov loop and its interaction with the low-lying modes is essential to obtain the full physical picture, and should be incorporated in effective models for the description of QCD in magnetic fields in the transition region.
Erscheinungsjahr
2013
Zeitschriftentitel
Journal of High Energy Physics
Band
2013
Ausgabe
4
Art.-Nr.
112
eISSN
1029-8479
Page URI
https://pub.uni-bielefeld.de/record/2955756

Zitieren

Bruckmann F, Endrödi G, Kovács TG. Inverse magnetic catalysis and the Polyakov loop. Journal of High Energy Physics. 2013;2013(4): 112.
Bruckmann, F., Endrödi, G., & Kovács, T. G. (2013). Inverse magnetic catalysis and the Polyakov loop. Journal of High Energy Physics, 2013(4), 112. https://doi.org/10.1007/JHEP04(2013)112
Bruckmann, F., Endrödi, G., and Kovács, T. G. (2013). Inverse magnetic catalysis and the Polyakov loop. Journal of High Energy Physics 2013:112.
Bruckmann, F., Endrödi, G., & Kovács, T.G., 2013. Inverse magnetic catalysis and the Polyakov loop. Journal of High Energy Physics, 2013(4): 112.
F. Bruckmann, G. Endrödi, and T.G. Kovács, “Inverse magnetic catalysis and the Polyakov loop”, Journal of High Energy Physics, vol. 2013, 2013, : 112.
Bruckmann, F., Endrödi, G., Kovács, T.G.: Inverse magnetic catalysis and the Polyakov loop. Journal of High Energy Physics. 2013, : 112 (2013).
Bruckmann, Falk, Endrödi, Gergely, and Kovács, Tamás G. “Inverse magnetic catalysis and the Polyakov loop”. Journal of High Energy Physics 2013.4 (2013): 112.

Export

Markieren/ Markierung löschen
Markierte Publikationen

Open Data PUB

Web of Science

Dieser Datensatz im Web of Science®

Suchen in

Google Scholar