کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
976539 | 933138 | 2008 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Multicritical behavior of the two-field Ginzburg–Landau model coupled to a gauge field
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موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
فیزیک ریاضی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this paper, we study the multicritical behavior of the Ginzburg–Landau model in a O(n1)⊕O(n2)O(n1)⊕O(n2)-symmetric version containing (n1/2+n2/2)(n1/2+n2/2)-complex order parameters coupled to a gauge field. We develop the RG analysis at a one-loop approximation in the context of the ϵϵ-expansion approach. The beta functions are obtained, and in the case of equal couplings between the two scalar fields and the gauge field and n1=n2=n/2n1=n2=n/2, the infrared stability of the fixed points is discussed. It is found that the charged infrared-stable fixed point exists for n>393.2n>393.2. Calculations of the relevant critical exponents are also carried out.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica A: Statistical Mechanics and its Applications - Volume 387, Issue 4, 1 February 2008, Pages 817–824
Journal: Physica A: Statistical Mechanics and its Applications - Volume 387, Issue 4, 1 February 2008, Pages 817–824
نویسندگان
L.M. Abreu, C. de Calan, A.P.C. Malbouisson,