290 citations · 1k across the 12 of their papers we have counts for
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Anisotropic domain walls
Bjørn Jensen, Harald H. Soleng
We find an anisotropic, non-supersymmetric generalization of the extreme supersymmetric domain walls of simple non-dilatonic supergravity theory. As opposed to the isotropic non- a…
Volterra Distortions, Spinning Strings, and Cosmic Defects
Roland A. Puntigam, Harald H. Soleng
Cosmic strings, as topological spacetime defects, show striking resemblance to defects in solid continua: distortions, which can be classified into disclinations and dislocations,…
Time machines: the Principle of Self-Consistency as a consequence of the Principle of Minimal Action
A. Carlini, V. P. Frolov, M. B. Mensky +2
We consider the action principle to derive the classical, non-relativistic motion of a self-interacting particle in a 4-D Lorentzian spacetime containing a wormhole and which allow…
CARTAN: A Mathematica package for tensor computations
Harald H. Soleng
CARTAN is an easy-to-use symbolic, tensor component package based on the popular Mathematica program. CARTAN makes use of the powerful formalism of rigid frames, and can return res…
Dark matter and non-Newtonian gravity from General Relativity coupled to a fluid of strings
Harald H. Soleng
An exact solution of Einstein's field equations for a point mass surrounded by a static, spherically symmetric fluid of strings is presented. The solution is singular at the origin…
Local and global gravitational aspects of domain wall space-times
Mirjam Cvetič, Stephen Griffies, Harald H. Soleng
Local and global gravitational effects induced by eternal vacuum domain walls are studied. We concentrate on thin walls between non-equal and non-positive cosmological constants on…
Dark Matter and Non-Newtonian Gravity From General Relativity on a Stringy Background
Harald H. Soleng
An exact solution of Einstein's field equations for a static spherically symmetric medium with a radially boost invariant energy-momentum tensor is presented. In the limit of an eq…