کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9861482 1529001 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Partition function for a singular background
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
Partition function for a singular background
چکیده انگلیسی
We present a method for evaluating the partition function in a varying external field. Specifically, we look at the case of a non-interacting, charged, massive scalar field at finite temperature with an associated chemical potential in the background of a delta-function potential. Whilst we present a general method, valid at all temperatures, we only give the result for the leading order term in the high temperature limit. Although the derivative expansion breaks down for inhomogeneous backgrounds we are able to obtain the high temperature expansion, as well as an analytic expression for the zero point energy, by way of a different approximation scheme, which we call the local Born approximation (LBA).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 610, Issues 1–2, 17 March 2005, Pages 159-164
نویسندگان
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