کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10723000 1033823 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Vacuum phase transition at nonzero baryon density
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
Vacuum phase transition at nonzero baryon density
چکیده انگلیسی
It is argued that the dominant contribution to the interaction of quark-gluon plasma at moderate T⩾Tc is given by the nonperturbative vacuum field correlators. Basing on that nonperturbative equation of state of quark-gluon plasma is computed and in the lowest approximation expressed in terms of absolute values of Polyakov lines for quarks and gluons Lfund(T),Ladj(T)=(Lfund)9/4 known from lattice and analytic calculations. Phase transition at any μ is described as a transition due to vanishing of one of correlators, DE(x), which implies the change of gluonic condensate ΔG2. Resulting transition temperature Tc(μ) is calculated in terms of ΔG2 and Lfund(Tc). The phase curve Tc(μ) is in a good agreement with lattice data. In particular Tc(0)=0.27; 0.19; 0.17 GeV for nf=0,2,3 and fixed ΔG2=0.0035 GeV4.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 650, Issue 1, 21 June 2007, Pages 36-40
نویسندگان
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