Three-loop HTL Free Energy for QED

Andersen JO, Strickland M, Su N (2009)
Phys.Rev.D 80(8): 085015.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
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Abstract / Bemerkung
We calculate the free energy of a hot gas of electrons and photons to threeloops using the hard-thermal-loop perturbation theory reorganization offinite-temperature perturbation theory. We calculate the free energy throughthree loops by expanding in a power series in m_D/T, m_f/T, and e^2, where m_Dand m_f are thermal masses and e is the coupling constant. We demonstrate thatthe hard-thermal-loop perturbation reorganization improves the convergence ofthe successive approximations to the QED free energy at large coupling, e ~ 2.The reorganization is gauge invariant by construction, and due to cancellationamong various contributions, we obtain a completely analytic result for theresummed thermodynamic potential at three loops. Finally, we compare our resultwith similar calculations that use the Phi-derivable approach.
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Zeitschriftentitel
Phys.Rev.D
Band
80
Zeitschriftennummer
8
Seite
085015
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Andersen JO, Strickland M, Su N. Three-loop HTL Free Energy for QED. Phys.Rev.D. 2009;80(8):085015.
Andersen, J. O., Strickland, M., & Su, N. (2009). Three-loop HTL Free Energy for QED. Phys.Rev.D, 80(8), 085015. doi:10.1103/PhysRevD.80.085015
Andersen, J. O., Strickland, M., and Su, N. (2009). Three-loop HTL Free Energy for QED. Phys.Rev.D 80, 085015.
Andersen, J.O., Strickland, M., & Su, N., 2009. Three-loop HTL Free Energy for QED. Phys.Rev.D, 80(8), p 085015.
J.O. Andersen, M. Strickland, and N. Su, “Three-loop HTL Free Energy for QED”, Phys.Rev.D, vol. 80, 2009, pp. 085015.
Andersen, J.O., Strickland, M., Su, N.: Three-loop HTL Free Energy for QED. Phys.Rev.D. 80, 085015 (2009).
Andersen, Jens O., Strickland, Michael, and Su, Nan. “Three-loop HTL Free Energy for QED”. Phys.Rev.D 80.8 (2009): 085015.

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arXiv: 0906.2936

Inspire: 823290

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