کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
977000 | 933167 | 2009 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Disorder-induced quantum-Griffiths-like features from a non-conventional renormalization group analysis near four dimensions
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موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
فیزیک ریاضی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Disorder-induced quantum-Griffiths-like features from a non-conventional renormalization group analysis near four dimensions Disorder-induced quantum-Griffiths-like features from a non-conventional renormalization group analysis near four dimensions](/preview/png/977000.png)
چکیده انگلیسی
We investigate the role played by symmetry conserving quenched disorder on quantum criticality of a variety of d -dimensional systems with a continuous symmetry order parameter. We employ a non-standard procedure which combines a preliminary reduction to an effective classical random problem and a successive conventional renormalization group treatment. Solving the effective flow equations to first order in ε=4−dε=4−d and then restoring the original coupling parameters, for d<4d<4 we find a quantum critical point scenario exhibiting unusual features, which remind us of some predictions of the quantum Griffiths phase model.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica A: Statistical Mechanics and its Applications - Volume 388, Issue 21, 1 November 2009, Pages 4523–4534
Journal: Physica A: Statistical Mechanics and its Applications - Volume 388, Issue 21, 1 November 2009, Pages 4523–4534
نویسندگان
I. Rabuffo, M.T. Mercaldo, A. Caramico D’Auria, L. De Cesare,