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Thermal photon, dilepton production, and electric charge transport in a baryon rich strongly coupled QGP from holography

Stefano Ivo Finazzo*

Romulo Rougemont†

  • Instituto de Física Teórica, Universidade do Estado de São Paulo, Rua Dr. Bento T. Ferraz 271, 01140-070 São Paulo, São Paulo, Brazil

  • Instituto de Física, Universidade de São Paulo, C.P. 66318, 05315-970 São Paulo, São Paulo, Brazil

  • *stefano@ift.unesp.br
  • †romulo@if.usp.br
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Phys. Rev. D 93, 034017 – Published 9 February, 2016

DOI: https://doi.org/10.1103/PhysRevD.93.034017

Abstract

We obtain the thermal photon and dilepton production rates in a strongly coupled quark-gluon plasma (QGP) at both zero and nonzero baryon chemical potentials using a bottom-up Einstein-Maxwell-dilaton holographic model that is in good quantitative agreement with the thermodynamics of (2+1)-flavor lattice QCD around the crossover transition for baryon chemical potentials up to 400 MeV, which may be reached in the beam energy scan at RHIC. We find that increasing the temperature T and the baryon chemical potential μB enhances the peak present in both spectra. We also obtain the electric charge susceptibility, the dc and ac electric conductivities, and the electric charge diffusion as functions of T and μB. We find that electric diffusive transport is suppressed as one increases μB. At zero baryon density, we compare our results for the dc electric conductivity and the electric charge diffusion with the latest lattice data available for these observables and find reasonable agreement around the crossover transition. Therefore, our holographic results may be used to constraint the magnitude of the thermal photon and dilepton production rates in a strongly coupled QGP, which we found to be at least 1 order of magnitude below perturbative estimates.

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References (111)

  1. K. Adcox et al. (PHENIX Collaboration), Nucl. Phys. A757, 184 (2005).
  2. I. Arsene et al. (BRAHMS Collaboration), Nucl. Phys. A757, 1 (2005).
  3. B. B. Back et al., Nucl. Phys. A757, 28 (2005).
  4. J. Adams et al. (STAR Collaboration), Nucl. Phys. A757, 102 (2005).
  5. G. Aad et al. (ATLAS Collaboration), J. High Energy Phys. 11 (2013) 183.
  6. M. Gyulassy and L. McLerran, Nucl. Phys. A750, 30 (2005)].
  7. U. Heinz and R. Snellings, Annu. Rev. Nucl. Part. Sci. 63, 123 (2013).
  8. E. Shuryak, arXiv:1412.8393.
  9. E. V. Shuryak, Phys. Lett. 78B, 150 (1978); Yad. Fiz. 28, 796 (1978) [Sov. J. Nucl. Phys. 28, 408 (1978)].
  10. A. Adare et al. (PHENIX Collaboration), Phys. Rev. Lett. 104, 132301 (2010).
  11. A. Adare et al. (PHENIX Collaboration), Phys. Rev. Lett. 109, 122302 (2012).
  12. A. Adare et al. (PHENIX Collaboration), Phys. Rev. C 91, 064904 (2015).
  13. M. Wilde (ALICE Collaboration), Nucl. Phys. A904–905, 573c (2013).
  14. D. Lohner (ALICE Collaboration), J. Phys. Conf. Ser. 446, 012028 (2013).
  15. R. Baier, H. Nakkagawa, A. Niegawa, and K. Redlich, Z. Phys. C 53, 433 (1992).
  16. J. I. Kapusta, P. Lichard, and D. Seibert, Phys. Rev. D 44, 2774 (1991); 47, 4171 (1993).
  17. M. A. Stephanov, K. Rajagopal, and E. V. Shuryak, Phys. Rev. D 60, 114028 (1999).
  18. M. A. Stephanov, K. Rajagopal, and E. V. Shuryak, Phys. Rev. Lett. 81, 4816 (1998).
  19. Y. Aoki, G. Endrodi, Z. Fodor, S. D. Katz, and K. K. Szabo, Nature (London) 443, 675 (2006).
  20. G. Aarts, F. A. James, E. Seiler, and I. O. Stamatescu, Eur. Phys. J. C 71, 1756 (2011).
  21. Z. Fodor and S. D. Katz, Phys. Lett. B 534, 87 (2002).
  22. R. V. Gavai and S. Gupta, Phys. Rev. D 68, 034506 (2003).
  23. C. R. Allton, S. Ejiri, S. J. Hands, O. Kaczmarek, F. Karsch, E. Laermann, and C. Schmidt, Phys. Rev. D 68, 014507 (2003).
  24. P. de Forcrand and O. Philipsen, Nucl. Phys. B673, 170 (2003).
  25. P. de Forcrand and O. Philipsen, Nucl. Phys. B642, 290 (2002).
  26. M. D’Elia and M. P. Lombardo, Phys. Rev. D 67, 014505 (2003).
  27. Z. Fodor and S. D. Katz, arXiv:0908.3341.
  28. O. Philipsen, Prog. Part. Nucl. Phys. 70, 55 (2013).
  29. M. Asakawa, T. Hatsuda, and Y. Nakahara, Prog. Part. Nucl. Phys. 46, 459 (2001).
  30. J. M. Maldacena, Adv. Theor. Math. Phys. 2, 231 (1998); Int. J. Theor. Phys. 38, 1113 (1999).
  31. E. Witten, Adv. Theor. Math. Phys. 2, 253 (1998).
  32. E. Witten, Adv. Theor. Math. Phys. 2, 505 (1998).
  33. S. S. Gubser, I. R. Klebanov, and A. M. Polyakov, Phys. Lett. B 428, 105 (1998).
  34. D. T. Son and A. O. Starinets, J. High Energy Phys. 09 (2002) 042.
  35. C. P. Herzog and D. T. Son, J. High Energy Phys. 03 (2003) 046.
  36. S. S. Gubser, S. S. Pufu, and F. D. Rocha, J. High Energy Phys. 08 (2008) 085.
  37. K. Skenderis and B. C. van Rees, J. High Energy Phys. 05 (2009) 085.
  38. R. Rougemont, A. Ficnar, S. Finazzo, and J. Noronha, arXiv:1507.06556.
  39. O. DeWolfe, S. S. Gubser, and C. Rosen, Phys. Rev. D 83, 086005 (2011).
  40. O. DeWolfe, S. S. Gubser, and C. Rosen, Phys. Rev. D 84, 126014 (2011).
  41. S. S. Gubser and A. Nellore, Phys. Rev. D 78, 086007 (2008).
  42. S. S. Gubser, A. Nellore, S. S. Pufu, and F. D. Rocha, Phys. Rev. Lett. 101, 131601 (2008).
  43. J. Noronha, Phys. Rev. D 81, 045011 (2010).
  44. U. Gursoy and E. Kiritsis, J. High Energy Phys. 02 (2008) 032.
  45. U. Gursoy, E. Kiritsis, and F. Nitti, J. High Energy Phys. 02 (2008) 019.
  46. U. Gursoy, E. Kiritsis, L. Mazzanti, and F. Nitti, Phys. Rev. Lett. 101, 181601 (2008).
  47. U. Gursoy, E. Kiritsis, L. Mazzanti, and F. Nitti, J. High Energy Phys. 05 (2009) 033.
  48. U. Gursoy, E. Kiritsis, L. Mazzanti, and F. Nitti, Nucl. Phys. B820, 148 (2009).
  49. C. Charmousis, B. Gouteraux, B. S. Kim, E. Kiritsis, and R. Meyer, J. High Energy Phys. 11 (2010) 151.
  50. B. Gouteraux and E. Kiritsis, J. High Energy Phys. 12 (2011) 036.
  51. M. Dion, J. F. Paquet, B. Schenke, C. Young, S. Jeon, and C. Gale, Phys. Rev. C 84, 064901 (2011).
  52. R. Chatterjee, H. Holopainen, I. Helenius, T. Renk, and K. J. Eskola, Phys. Rev. C 88, 034901 (2013).
  53. C. Shen, U. W. Heinz, J. F. Paquet, I. Kozlov, and C. Gale, Phys. Rev. C 91, 024908 (2015).
  54. J. F. Paquet, C. Shen, G. S. Denicol, M. Luzum, B. Schenke, S. Jeon, and C. Gale, arXiv:1509.06738.
  55. S. I. Finazzo and J. Noronha, Phys. Rev. D 89, 106008 (2014).
  56. P. B. Arnold, G. D. Moore, and L. G. Yaffe, J. High Energy Phys. 11 (2001) 057.
  57. P. B. Arnold, G. D. Moore, and L. G. Yaffe, J. High Energy Phys. 12 (2001) 009.
  58. J. Ghiglieri, J. Hong, A. Kurkela, E. Lu, G. D. Moore, and D. Teaney, J. High Energy Phys. 05 (2013) 010.
  59. C. Gale, Y. Hidaka, S. Jeon, S. Lin, J.-F. Paquet, R. D. Pisarski, D. Satow, V. V. Skokov, and G. Vujanovic, Phys. Rev. Lett. 114, 072301 (2015).
  60. Y. Hidaka, S. Lin, R. D. Pisarski, and D. Satow, J. High Energy Phys. 10 (2015) 005.
  61. S. Caron-Huot, P. Kovtun, G. D. Moore, A. Starinets, and L. G. Yaffe, J. High Energy Phys. 12 (2006) 015.
  62. D. Teaney, Phys. Rev. D 74, 045025 (2006).
  63. B. Hassanain and M. Schvellinger, Phys. Rev. D 85, 086007 (2012).
  64. B. Hassanain and M. Schvellinger, J. High Energy Phys. 12 (2012) 095.
  65. K. A. Mamo, J. High Energy Phys. 08 (2013) 083.
  66. L. Patino and D. Trancanelli, J. High Energy Phys. 02 (2013) 154.
  67. V. Jahnke, A. Luna, L. Patino, and D. Trancanelli, J. High Energy Phys. 01 (2014) 149.
  68. A. S. Misobuchi and V. Jahnke, arXiv:1510.03774.
  69. S. Y. Wu and D. L. Yang, J. High Energy Phys. 08 (2013) 032.
  70. B. Muller, S. Y. Wu, and D. L. Yang, Phys. Rev. D 89, 026013 (2014).
  71. D. L. Yang and B. Muller, arXiv:1507.04232.
  72. R. Rougemont, J. Noronha, and J. Noronha-Hostler, Phys. Rev. Lett. 115, 202301 (2015).
  73. S. I. Finazzo, R. Rougemont, H. Marrochio, and J. Noronha, J. High Energy Phys. 02 (2015) 051.
  74. R. Rougemont, R. Critelli, and J. Noronha, arXiv:1505.07894 [Phys. Rev. D (to be published)].
  75. S. Borsanyi, G. Endrodi, Z. Fodor, S. D. Katz, S. Krieg, C. Ratti, and K. K. Szabo, J. High Energy Phys. 08 (2012) 053.
  76. S. Borsanyi, Z. Fodor, S. D. Katz, S. Krieg, C. Ratti, and K. Szabo, J. High Energy Phys. 01 (2012) 138.
  77. J. W. York, Jr., Phys. Rev. Lett. 28, 1082 (1972).
  78. G. W. Gibbons and S. W. Hawking, Phys. Rev. D 15, 2752 (1977).
  79. M. Henningson and K. Skenderis, J. High Energy Phys. 07 (1998) 023.
  80. S. de Haro, S. N. Solodukhin, and K. Skenderis, Commun. Math. Phys. 217, 595 (2001).
  81. K. Skenderis, Classical Quantum Gravity 19, 5849 (2002).
  82. I. Papadimitriou, J. High Energy Phys. 08 (2011) 119.
  83. J. Lindgren, I. Papadimitriou, A. Taliotis, and J. Vanhoof, J. High Energy Phys. 07 (2015) 094.
  84. R. Bellwied, S. Borsanyi, Z. Fodor, S. D. Katz, A. Pasztor, C. Ratti, and K. K. Szabo, Phys. Rev. D 92, 114505 (2015).
  85. J. D. Bekenstein, Phys. Rev. D 7, 2333 (1973).
  86. S. W. Hawking, Commun. Math. Phys. 43, 199 (1975); 46, 206 (1976).
  87. A. Ficnar, J. Noronha, and M. Gyulassy, Nucl. Phys. A855, 372 (2011).
  88. P. Breitenlohner and D. Z. Freedman, Ann. Phys. (N.Y.) 144, 249 (1982).
  89. P. Breitenlohner and D. Z. Freedman, Phys. Lett. 115B, 197 (1982).
  90. R. A. Janik, G. Plewa, H. Soltanpanahi, and M. Spalinski, Phys. Rev. D 91, 126013 (2015).
  91. A. Bazavov et al., Phys. Rev. Lett. 109, 192302 (2012).
  92. S. Borsanyi, Z. Fodor, S. D. Katz, S. Krieg, C. Ratti, and K. K. Szabo, Phys. Rev. Lett. 111, 062005 (2013).
  93. F. Karsch and K. Redlich, Phys. Lett. B 695, 136 (2011).
  94. N. Iqbal and H. Liu, Phys. Rev. D 79, 025023 (2009).
  95. G. Aarts, C. Allton, A. Amato, P. Giudice, S. Hands, and J. I. Skullerud, J. High Energy Phys. 02 (2015) 186.
  96. S. S. Gubser, I. R. Klebanov, and A. W. Peet, Phys. Rev. D 54, 3915 (1996).
  97. M. Panero, Phys. Rev. Lett. 103, 232001 (2009).
  98. G. Aarts, C. Allton, J. Foley, S. Hands, and S. Kim, Phys. Rev. Lett. 99, 022002 (2007).
  99. B. B. Brandt, A. Francis, H. B. Meyer, and H. Wittig, J. High Energy Phys. 03 (2013) 100.
  100. P. V. Buividovich, M. N. Chernodub, D. E. Kharzeev, T. Kalaydzhyan, E. V. Luschevskaya, and M. I. Polikarpov, Phys. Rev. Lett. 105, 132001 (2010).
  101. Y. Burnier and M. Laine, Eur. Phys. J. C 72, 1902 (2012).
  102. H.-T. Ding, A. Francis, O. Kaczmarek, F. Karsch, E. Laermann, and W. Soeldner, Phys. Rev. D 83, 034504 (2011).
  103. G. Policastro, D. T. Son, and A. O. Starinets, J. High Energy Phys. 09 (2002) 043.
  104. M. Greif, I. Bouras, C. Greiner, and Z. Xu, Phys. Rev. D 90, 094014 (2014).
  105. W. Cassing, O. Linnyk, T. Steinert, and V. Ozvenchuk, Phys. Rev. Lett. 110, 182301 (2013).
  106. C. Gale, S. Jeon, B. Schenke, P. Tribedy, and R. Venugopalan, Phys. Rev. Lett. 110, 012302 (2013).
  107. P. Kovtun, D. T. Son, and A. O. Starinets, Phys. Rev. Lett. 94, 111601 (2005).
  108. A. Buchel and J. T. Liu, Phys. Rev. Lett. 93, 090602 (2004).
  109. P. B. Arnold, G. D. Moore, and L. G. Yaffe, J. High Energy Phys. 05 (2003) 051.
  110. J. Fuini III, N. S. Demir, D. K. Srivastava, and S. A. Bass, J. Phys. G 38, 015004 (2011).
  111. A. Jaiswal, B. Friman, and K. Redlich, Phys. Lett. B 751, 548 (2015).

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Phys. Rev. D 93, 034017– Published 9 February, 2016
  • Received 20 October 2015

© 2016 American Physical Society

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