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Lattice QCD thermodynamic results with improved staggered fermions

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Abstract

We present results on the QCD equation of state, obtained with two different improved dynamical staggered fermion actions and almost physical quark masses. Lattice cut-off effects are discussed in detail as results for three different lattice spacings are available now, i.e. results have been obtained on lattices with temporal extent of N τ =4,6 and 8. Furthermore we discuss the Taylor expansion approach to non-zero baryon chemical potential and present the isentropic equation of state on lines of constant entropy per baryon number.

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References

  1. M. Cheng et al., Phys. Rev. D 77, 014511 (2008)

    Article  ADS  Google Scholar 

  2. HotQCD Collaboration, in preparation

  3. C. Detar, R. Gupta (HotQCD Collaboration), PoS LAT2007, 179 (2007)

    Google Scholar 

  4. F. Karsch (RBC Collaboration and HotQCD Collaboration), arXiv:0804.4148 [hep-lat]

  5. K. Symanzik, Nucl. Phys. B 226, 187 (1983)

    Article  ADS  MathSciNet  Google Scholar 

  6. K. Symanzik, Nucl. Phys. B 226, 205 (1983)

    Article  ADS  MathSciNet  Google Scholar 

  7. S. Naik, Nucl. Phys. B 316, 238 (1989)

    Article  ADS  Google Scholar 

  8. F. Karsch, E. Laermann, A. Peikert, Nucl. Phys. B 605, 579 (2001)

    Article  ADS  Google Scholar 

  9. B. Sheikholeslami, R. Wohlert, Nucl. Phys. 259, 572 (1985)

    Article  ADS  Google Scholar 

  10. P. Hasenfratz, F. Niedermayer, Nucl. Phys. B 414, 785 (1994)

    Article  ADS  Google Scholar 

  11. P. Hasenfratz, S. Hauswirth, K. Holland, T. Jorg, F. Niedermayer, U. Wenger, Int. J. Mod. Phys. C. 12, 691 (2001)

    Article  ADS  MathSciNet  Google Scholar 

  12. W. Bietenholz, U.-J. Wiese, Nucl. Phys. B 464, 319 (1996)

    Article  ADS  Google Scholar 

  13. P. Hegde, F. Karsch, E. Laermann, S. Shcheredin, Eur. Phys. J. C 55, 423 (2008)

    Article  ADS  Google Scholar 

  14. I. Hováth, A.D. Kennedy, S. Sint, Nucl. Phys. B 73, 834 (1999)

    Article  Google Scholar 

  15. M.A. Clark, A.D. Kennedy, Z. Sroczynski, Nucl. Phys. Proc. Suppl. 140, 835 (2005)

    Article  ADS  Google Scholar 

  16. C. Aubin et al., Phys. Rev. D 70, 094505 (2004)

    Article  ADS  Google Scholar 

  17. A. Gray et al., Phys. Rev. D 72, 094507 (2005)

    Article  ADS  Google Scholar 

  18. C. Bernard et al., Phys. Rev. D 75, 094505 (2007)

    Article  ADS  Google Scholar 

  19. S. Ejiri, PoS LAT2008, 002 (2008) arXiv:0812.1534 [hep-lat]

    Google Scholar 

  20. M.P. Lombardo, J. Phys. G 35, 104019 (2008)

    Article  ADS  MathSciNet  Google Scholar 

  21. C. Schmidt, PoS LAT2006, 021 (2006)

    Google Scholar 

  22. C.R. Allton, M. Doring, S. Ejiri, S.J. Hands, O. Kaczmarek, F. Karsch, E. Laermann, K. Redlich, Phys. Rev. D 71, 054508 (2005)

    Article  ADS  Google Scholar 

  23. C.R. Allton et al., Phys. Rev. D 66, 074507 (2002)

    Article  ADS  Google Scholar 

  24. C. Miao, C. Schmidt, PoS LAT2007, 175 (2007)

    Google Scholar 

  25. C. Bernard et al., Phys. Rev. D 77, 014503 (2008)

    Article  ADS  Google Scholar 

  26. S. Ejiri, F. Karsch, E. Laermann, C. Schmidt, Phys. Rev. D 73, 054506 (2006)

    Article  ADS  Google Scholar 

  27. J. Cleymans, K. Redlich, Phys. Rev. Lett. 81, 5284 (1998)

    Article  ADS  Google Scholar 

  28. J. Cleymans, K. Redlich, Phys. Rev. C 60, 054908 (1999)

    Article  ADS  Google Scholar 

  29. J. Cleymans, H. Oeschler, K. Redlich, S. Wheaton, Phys. Rev. C 73, 034905 (2006)

    Article  ADS  Google Scholar 

  30. C.M. Hung, E. Shuryak, Phys. Rev. D 57, 1891 (1998)

    ADS  Google Scholar 

  31. V.D. Toneev, J. Cleymans, E.G. Nikonov, K. Redlich, A.A. Shanenko, J. Phys. G 27, 827 (2001)

    Article  ADS  Google Scholar 

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Correspondence to Christian Schmidt.

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Schmidt, C. Lattice QCD thermodynamic results with improved staggered fermions. Eur. Phys. J. C 61, 537–543 (2009). https://doi.org/10.1140/epjc/s10052-009-0882-9

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  • DOI: https://doi.org/10.1140/epjc/s10052-009-0882-9

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