Francisco S N Lobo 2004 Class. Quantum Grav. 21 4811 doi:10.1088/0264-9381/21/21/005
Francisco S N Lobo
Show affiliationsWe match an interior solution of a spherically symmetric traversable wormhole to a unique exterior vacuum solution, with a generic cosmological constant, at a junction interface, and the surface stresses on the thin shell are deduced. In the spirit of minimizing the usage of exotic matter we determine regions in which the weak and null energy conditions are satisfied on the junction surface. The characteristics and several physical properties of the surface stresses are explored, namely, regions where the sign of the tangential surface pressure is positive and negative (surface tension) are determined. This is done by expressing the tangential surface pressure as a function of several parameters, namely, that of the matching radius, the redshift parameter, the surface energy density and of the generic cosmological constant. An equation governing the behaviour of the radial pressure across the junction surface is also deduced.
83C05 Einstein's equations (general structure, canonical formalism, Cauchy problems)
Issue 21 (7 November 2004)
Received 2 May 2004, in final form 24 August 2004
Published 4 October 2004
Francisco S N Lobo 2004 Class. Quantum Grav. 21 4811
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