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Article overview
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Quark Number Susceptibility in Hard Thermal Loop Perturbation Theory | | Najmul Haque
; Munshi G. Mustafa
; | | Date: |
13 Jul 2010 | | Abstract: | We formulate a thermodynamically consistent Hard Thermal Loop perturbation
theory at the first derivative level of the thermodynamic potential by
employing an external probe to the system. Using this we obtain various
thermodynamic quantities in leading order, and also, in particular, the quark
number susceptibility as a response to such an external disturbance. The
results so obtained are separated in soft and hard momenta naturally and are
also in agreement with those obtained in the two-loop approximately
self-consistent $Phi$-derivable Hard Thermal Loop resummation. Further, we
also calculate the quark number susceptibility, which is related to the
correlation function through the thermodynamic sum rule associated with the
symmetry of the system. Within the Hard Thermal Loop approximation this
connection was not shown earlier and also the equivalence of the quark number
susceptibility in two ways. | | Source: | arXiv, 1007.2076 | | Services: | Forum | Review | PDF | Favorites | |
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