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Including the fermion vacuum fluctuations in the (2+1) flavor Polyakov quark-meson model

Chatterjee, Sandeep and Mohan, Kirtimaan A (2012) Including the fermion vacuum fluctuations in the (2+1) flavor Polyakov quark-meson model. In: Physical Review D, 85 (7).

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Official URL: http://prd.aps.org/abstract/PRD/v85/i7/e074018


We consider the (2 + 1) flavor Polyakov quark-meson model and study the effect of including fermion vacuum fluctuations on the thermodynamics and phase diagram. The resulting model predictions are compared to the recent QCD lattice simulations by the HotQCD and Wuppertal-Budapest collaborations. The variation of the thermodynamic quantities across the phase transition region becomes smoother. This results in better agreement with the lattice data. Depending on the value of the mass of the sigma meson, including the vacuum term results in either pushing the critical end point into higher values of the chemical potential or excluding the possibility of a critical end point altogether.

Item Type: Journal Article
Publication: Physical Review D
Publisher: The American Physical Society
Additional Information: Copyright of this article is belongs to The American Physical Society.
Department/Centre: Division of Physical & Mathematical Sciences > Centre for High Energy Physics
Date Deposited: 22 Aug 2012 04:53
Last Modified: 22 Aug 2012 04:53
URI: http://eprints.iisc.ac.in/id/eprint/44456

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