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Vector meson spectral function and dilepton rate in presence of strong entanglement effect between the chiral and the Polyakov loop dynamics | | Chowdhury Aminul Islam
; Sarbani Majumder
; Munshi G. Mustafa
; | | Date: |
Mon, 17 Aug 2015 15:33:06 GMT (1890kb) | | Abstract: | In this work we have re-explored our earlier study on the vector meson
spectral function and its spectral property in the form of dilepton rate in a
two-flavour Polyakov loop extended Nambu-Jona-Lasinio (PNJL) model in presence
of a strong entanglement between the chiral and Polyakov loop dynamics. The
entanglement considered here is generated through the four-quark scalar type
interaction in which the coupling strength depends on the Polyakov loop and
runs with temperature and chemical potential. The entanglement effect is also
considered for the four-quark vector type interaction in the same manner. We
observe that the entanglement effect relatively enhances the color degrees of
freedom due to the running of the both scalar and vector couplings. This
modifies the vector meson spectral function and thus the spectral property such
as the dilepton production rate in low invariant mass also gets modified. | | Source: | arXiv, 1508.4061 | | Services: | Forum | Review | PDF | Favorites | |
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