کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1842918 1645187 2006 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Topology, mass and Casimir energy
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
پیش نمایش صفحه اول مقاله
Topology, mass and Casimir energy
چکیده انگلیسی
The vacuum expectation value of the stress-energy tensor for a massive scalar field with arbitrary coupling in flat spaces with non-trivial topology is discussed. We calculate the Casimir energy in these spaces employing the recently proposed optical approach based on closed classical paths. The evaluation of the Casimir energy consists in an expansion in terms of the lengths of these paths. We will show how different paths with corresponding weight factors contribute in the calculation. The optical approach is also used to find the mass and temperature dependence of the Casimir energy in a cavity and it is shown that the massive fields cannot be neglected in high and low temperature regimes. The same approach is applied to twisted as well as spinor fields and the results are compared with those in the literature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics B - Volume 738, Issues 1–2, 20 March 2006, Pages 269-282
نویسندگان
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