کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1843239 1645169 2006 32 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On the free energy of noncommutative quantum electrodynamics at high temperature
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
پیش نمایش صفحه اول مقاله
On the free energy of noncommutative quantum electrodynamics at high temperature
چکیده انگلیسی
We compute higher order contributions to the free energy of noncommutative quantum electrodynamics at a nonzero temperature T. Our calculation includes up to three-loop contributions (fourth order in the coupling constant e). In the high temperature limit we sum all the ring diagrams and obtain a result which has a peculiar dependence on the coupling constant. For large values of eθT2 (θ is the magnitude of the noncommutative parameters) this nonperturbative contribution exhibits a nonanalytic behavior proportional to e3. We show that above a certain critical temperature, there occurs a thermodynamic instability which may indicate a phase transition.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics B - Volume 754, Issues 1–2, 16 October 2006, Pages 146-177
نویسندگان
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