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The European Physical Journal A

, Volume 31, Issue 4, pp 766–768 | Cite as

Behavior of the topological susceptibility at finite T and μ and signs of restoration of chiral symmetries

  • M. C. RuivoEmail author
  • P. Costa
  • C. A. de Sousa
QNP 2006

Abstract.

We investigate the possible restoration of chiral and axial symmetries across the phase transition at finite temperature and chemical potential, by analyzing the behavior of several physics quantities, such as the quark condensates and the topological susceptibility, the respective derivatives with respect to the chemical potential, and the masses of meson chiral partners. We discuss whether only chiral symmetry or both chiral and axial symmetries are restored and what the role of the strange quark is. The results are compared with recent lattice results.

PACS.

11.30.Rd Chiral symmetries 11.10.Wx Finite-temperature field theory 14.40.Aq π, K, and η mesons 

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References

  1. 1.
    T. Schaefer, hep-ph/0412215.Google Scholar
  2. 2.
    A. Di Giacomo, E. Meggiolaro, H. Panagopoulos, Phys. Lett. B 277, 491 (1992).CrossRefADSGoogle Scholar
  3. 3.
    J. Schafner-Bielich, Phys. Rev. Lett. 84, 3261 (2000).CrossRefADSGoogle Scholar
  4. 4.
    K. Fukushina, K. Ohnishi, K. Ohta, Phys. Rev. C 514, 045203 (2001).CrossRefADSGoogle Scholar
  5. 5.
    P. Costa, M.C. Ruivo, Y.L. Kalinovsky, C.A. de Sousa, Phys. Rev. D 70, 116013 (2004) hep-ph/0408177CrossRefADSGoogle Scholar
  6. 6.
    B. Allés, M.D. Elia, A. Di Giacomo, Nucl. Phys. B 494, 281 (1997).CrossRefADSGoogle Scholar
  7. 7.
    R. Alkofer, P.A. Amundsen, H. Reinhardt, Phys. Lett. B 218, 75 (1989)CrossRefADSGoogle Scholar
  8. 8.
    B. Allés, M.D. Elia, M.P. Lombardo, Nucl. Phys. B 752, 124 (2006).CrossRefADSGoogle Scholar
  9. 9.
    C. Bernard, Phys. Rev. D 71, 034504 (2005).CrossRefADSGoogle Scholar
  10. 10.
    J.R. Pelaez, Phys. Rev. D 66, 096007 (2002).CrossRefADSGoogle Scholar
  11. 11.
    A. Tawfik, D. Toublan, Phys. Lett. B 623, 48 (2005).CrossRefADSGoogle Scholar
  12. 12.
    P. Costa, M.C. Ruivo, Y.L. Kalinovsky, C.A. de Sousa, Phys. Rev. C 70, 025204 (2004) hep-ph/0304025.CrossRefADSGoogle Scholar

Copyright information

© Società Italiana di Fisica and Springer-Verlag 2007

Authors and Affiliations

  1. 1.Centro de Fısica Teórica, Departamento de FısicaUniversidade de CoimbraCoimbraPortugal

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