کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1842984 1031499 2006 21 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
QCD with bosonic quarks at nonzero chemical potential
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
پیش نمایش صفحه اول مقاله
QCD with bosonic quarks at nonzero chemical potential
چکیده انگلیسی
We formulate the low energy limit of QCD like partition functions with bosonic quarks at nonzero chemical potential. The partition functions are evaluated in the parameter domain that is dominated by the zero momentum modes of the Goldstone fields. We find that partition functions with bosonic quarks differ structurally from partition functions with fermionic quarks. Contrary to the theory with one fermionic flavor, where the partition function in this domain does not depend on the chemical potential, a phase transition takes place in the theory with one bosonic flavor when the chemical potential is equal to mπ/2. For a pair of conjugate bosonic flavors the partition function shows no phase transition, whereas the fermionic counterpart has a phase transition at μ=mπ/2. The difference between the bosonic theories and the fermionic ones originates from the convergence requirements of bosonic integrals resulting in a noncompact Goldstone manifold and a covariant derivative with the commutator replaced by an anti-commutator. For one bosonic flavor the partition function is evaluated using a random matrix representation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics B - Volume 757, Issue 3, 27 November 2006, Pages 259-279
نویسندگان
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