ICPAQGP-2010

5-10 December 2010

6th International Conference on Physics and Astrophysics of Quark Gluon Plasma (ICPAQGP 2010)

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Polyakov loop augmented 2+1 Flavor Quark Meson Linear Sigma Model and Symmetry Restoration Eﬀects

Content:

We have augmented the generalized 2+1 ﬂavor quark meson linear sigma model (QMS model) with the inclusion of Polyakov loop potential and studied the qualitative and quantitative convergence of the masses of chiral partners in the scalar and pseudo-scalar channel, when the parity doubling takes place as the temperature is increased and the partial restoration of chiral symmetry is achieved. We have calculated the results for two diﬀerent forms of the eﬀective Polyakov loop potential. The comparison of results with the existing calculations in the pure 2 + 1 quark meson linear sigma model, shows that the restoration of chiral symmetry becomes faster and sharper on account of the inclusion of Polyakov loop potential. We ﬁnd that inclusion of the Polyakov loop in quark meson linear sigma model together with the presence of axial anomaly,triggers an early and signiﬁcant melting of the strange condensate. The role of UA (1) anomaly in determining the isoscalar masses and mixing angles for the pseudoscalar (η and η ′ ) and scalar (σ and f0 ) meson complex, has also been investigated in the Polyakov quark meson linear sigma model. The interplay of chiral symmetry restoration eﬀects and the setting up of UA (1) restoration trend has been discussed and analyzed in the framework of the presented model calculations.

Id:

Place:

Room: Main Auditorium

Starting date:

--not yet scheduled--

Duration:

00'

Primary Authors:

Dr. TIWARI, Vivek Kumar (Reader, Department of Physics, University of Allahabad)

Co-Authors:

Mr. GUPTA, Uma Shankar (Department of Physics, University of Allahabad)

Presenters:

Dr. TIWARI, Vivek Kumar