561 research outputs found
Thin Shell Wormhole in Heterotic String Theory
Using 'Cut and Paste' technique, we develop a thin shell wormhole in
heterotic string theory. We determine the surface stresses, which are localized
in the shell, by using Darmois-Israel formalism. The linearized stability of
this thin wormhole is also analyzed.Comment: 12 pages, 2 figures, Accepted in Int. J. Mod. Phys.
Chaplygin electron gas model
We provide a new electromagnetic mass model admitting Chaplygin gas equation
of state. We investigate three specializations, the first characterized by a
vanishing effective pressure, the second provided with a constant effective
density and the third is described by a constant effective pressure. For these
specializations two particular cases are discussed. In addition, for
specialization I, case I we found isotropic coordinate as well as Kretschmann
scalar, and for specialization III, case II two special scenarios have been
studied.Comment: LaTex, some typos correcte
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