کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9861265 1528990 2005 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Instability of tachyon supertube in type IIA Gödel spacetime
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
Instability of tachyon supertube in type IIA Gödel spacetime
چکیده انگلیسی
We study the tachyon supertube probes in a type IIA supergravity background which is a stringy-like Gödel spacetime and contains closed timelike curve. In the case of small value of f, which is a parameter of the background, we use the Minahan-Zwiebach tachyon action to obtain a single regular tube solution and argue that the tube is a BPS D2-brane. However, we find that the fluctuation around the tube configuration has a negative-energy mode. This means that the tachyon supertube, despite being a BPS configuration, develops an instability in the pathological spacetime with closed timelike curve which violates the causality.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 615, Issues 3–4, 2 June 2005, Pages 266-272
نویسندگان
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