کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8202080 | 1529856 | 2015 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Wormholes with a barotropic equation of state admitting a one-parameter group of conformal motions
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Wormholes with a barotropic equation of state admitting a one-parameter group of conformal motions Wormholes with a barotropic equation of state admitting a one-parameter group of conformal motions](/preview/png/8202080.png)
چکیده انگلیسی
The theoretical construction of a traversable wormhole proposed by Morris and Thorne maintains complete control over the geometry by assigning both the shape and redshift functions, thereby leaving open the determination of the stress-energy tensor. This paper examines the effect of introducing the linear barotropic equation of state pr=ÏÏ on the theoretical construction. If either the energy density or the closely related shape function is known, then the Einstein field equations do not ordinarily yield a finite redshift function. If, however, the wormhole admits a one-parameter group of conformal motions, then both the redshift and shape functions exist provided that â3<Ï<â1. In a cosmological setting, the equation of state p=ÏÏ, Ï<â1, is associated with phantom dark energy, which is known to support traversable wormholes. The restriction â3<Ï<â1 that arises in the present wormhole setting can be attributed to the assumption of conformal symmetry.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Physics - Volume 355, April 2015, Pages 115-120
Journal: Annals of Physics - Volume 355, April 2015, Pages 115-120
نویسندگان
Peter K.F. Kuhfittig,