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Holographic study of magnetically induced QCD effects

Nele Callebaut (UGent) , David Dudal (UGent) and Henri Verschelde (UGent)
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Abstract
We study the effect of a constant external magnetic field on the rho meson mass m(rho) on the one hand, and on the chiral symmetry restoration temperature T-chi on the other hand, using the Sakai-Sugimoto model with two quenched flavours and non-zero constituent quark masses, which is a holographic dual of a QCD-like theory in the quenched approximation and chiral limit. We find that the explicit chiral symmetry breaking caused by the presence of the magnetic field eB manifests itself in a stronger chiral magnetic catalysis effect for the up than for the down quarks, resulting in two separate chiral symmetry restoration temperatures T-chi(u) and T-chi(d) with T-chi(u)(eB) > T-chi(d)(eB) > T-c (the deconfinement temperature) for each value of eB. The Landau levels described in the rho meson mass equation indicate an instability of the QCD vacuum towards condensation of rho mesons at eB similar to 1.1 mp(rho)(2) approximate to 0.67 GeV2, confirming a recent prediction of Chernodub.

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Chicago
Callebaut, Nele, David Dudal, and Henri Verschelde. 2011. “Holographic Study of Magnetically Induced QCD Effects.” In Acta Physica Polonica B Proceedings Supplement, 4:671–676. Kraków, Poland: Jagiellonian University.
APA
Callebaut, N., Dudal, D., & Verschelde, H. (2011). Holographic study of magnetically induced QCD effects. Acta Physica Polonica B Proceedings Supplement (Vol. 4, pp. 671–676). Presented at the Excited QCD 2011, Kraków, Poland: Jagiellonian University.
Vancouver
1.
Callebaut N, Dudal D, Verschelde H. Holographic study of magnetically induced QCD effects. Acta Physica Polonica B Proceedings Supplement. Kraków, Poland: Jagiellonian University; 2011. p. 671–6.
MLA
Callebaut, Nele, David Dudal, and Henri Verschelde. “Holographic Study of Magnetically Induced QCD Effects.” Acta Physica Polonica B Proceedings Supplement. Vol. 4. Kraków, Poland: Jagiellonian University, 2011. 671–676. Print.
@inproceedings{2118826,
  abstract     = {We study the effect of a constant external magnetic field on the rho meson mass m(rho) on the one hand, and on the chiral symmetry restoration temperature T-chi on the other hand, using the Sakai-Sugimoto model with two quenched flavours and non-zero constituent quark masses, which is a holographic dual of a QCD-like theory in the quenched approximation and chiral limit. We find that the explicit chiral symmetry breaking caused by the presence of the magnetic field eB manifests itself in a stronger chiral magnetic catalysis effect for the up than for the down quarks, resulting in two separate chiral symmetry restoration temperatures T-chi(u) and T-chi(d) with T-chi(u)(eB) {\textrangle} T-chi(d)(eB) {\textrangle} T-c (the deconfinement temperature) for each value of eB. The Landau levels described in the rho meson mass equation indicate an instability of the QCD vacuum towards condensation of rho mesons at eB similar to 1.1 mp(rho)(2) approximate to 0.67 GeV2, confirming a recent prediction of Chernodub.},
  author       = {Callebaut, Nele and Dudal, David and Verschelde, Henri},
  booktitle    = {Acta Physica Polonica B Proceedings Supplement},
  issn         = {1899-2358},
  language     = {eng},
  location     = {Les Houches, France},
  number       = {4},
  pages        = {671--676},
  publisher    = {Jagiellonian University},
  title        = {Holographic study of magnetically induced QCD effects},
  url          = {http://dx.doi.org/10.5506/APhysPolBSupp.4.671},
  volume       = {4},
  year         = {2011},
}

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