کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1848718 1528799 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Static spherically symmetric wormholes with isotropic pressure
ترجمه فارسی عنوان
کرم چاله های متقاطع کروی استاتیک با فشار ایزوتروپیک
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
چکیده انگلیسی

In this paper we study static spherically symmetric wormhole solutions sustained by matter sources with isotropic pressure. We show that such spherical wormholes do not exist in the framework of zero-tidal-force wormholes. On the other hand, it is shown that for the often used power-law shape function there are no spherically symmetric traversable wormholes sustained by sources with a linear equation of state p=ωρp=ωρ for the isotropic pressure, independently of the form of the redshift function ϕ(r)ϕ(r). We consider a solution obtained by Tolman at 1939 for describing static spheres of isotropic fluids, and show that it also may describe wormhole spacetimes with a power-law redshift function, which leads to a polynomial shape function, generalizing a power-law shape function, and inducing a solid angle deficit.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 757, 10 June 2016, Pages 130–135
نویسندگان
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