کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1842474 | 1527807 | 2008 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Can we study quark matter in the quenched approximation?
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موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
فیزیک ریاضی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We study a quenched SU(2) lattice gauge theory in which, in an attempt to distinguish between timelike and spacelike gauge fields, the gauge ensemble {Uμ} is generated from a 3-dimensional gauge-Higgs model, the timelike link variables being “reconstructed” from the Higgs fields. The resulting ensemble is used to study quenched quark propagation with non-zero chemical potential μ; in particular, the quark density, chiral and superfluid condensates, meson, baryon and gauge-fixed quark propagators are all studied as functions of μ. While it proves possible to alter the strength of the inter-quark interaction by changing the parameters of the dimensionally reduced model, there is no evidence for any region of parameter space where quarks exhibit deconfined behaviour or thermodynamic observables scale as if there was a Fermi surface.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics B - Volume 789, Issues 1â2, 21 January 2008, Pages 111-132
Journal: Nuclear Physics B - Volume 789, Issues 1â2, 21 January 2008, Pages 111-132
نویسندگان
Pietro Giudice, Simon Hands,