Abstract.
We compare our previously proposed hard-thermal-loop (HTL) resummed calculation of quark number susceptibilities using a self-consistent two-loop approximation to the quark density with a recent calculation of the same quantity at the one-loop level in a variant of HTL-screened perturbation theory. Besides pointing out conceptual problems with the latter approach, we show that it severely over-includes the leading-order interaction effects, while including none of the plasmon terms, which is the main reason for requiring improved resummation schemes.
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Received: 27 June 2002 / Revised version: 23 September 2002 / Published online: 31 January 2003
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Blaizot, JP., Iancu, E. & Rebhan, A. Comparing different hard-thermal-loop approaches to quark number susceptibilities. Eur. Phys. J. C 27, 433–438 (2003). https://doi.org/10.1140/epjc/s2002-01103-5
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DOI: https://doi.org/10.1140/epjc/s2002-01103-5