290 citations · 1k across the 12 of their papers we have counts for
12 papers
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…
Supergravity Domain Walls
Mirjam Cvetic, Harald H. Soleng
We review the status of domain walls in supergravity theories for both the vacuum domain walls as well as dilatonic domain walls. We concentrate on a systematic analysis of t…
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,…
Charged black points in General Relativity coupled to the logarithmic gauge theory
Harald H. Soleng
The exact solution for a static spherically symmetric field outside a charged point particle is found in a non-linear gauge theory with a logarithmic Lagrangian. The electro…
Experimental limits to the density of dark matter in the solar system
Øyvind Grøn, Harald H. Soleng
On the scales of galaxies and beyond there is evidence for unseen dark matter. In this paper we find the experimental limits to the density of dark matter bound in the solar system…
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…
Naked singularities in dilatonic domain wall space-times
Mirjam Cvetic, Harald H. Soleng
We investigate gravitational effects of extreme, non-extreme and ultra- extreme domain walls in the presence of a dilaton field. The dilaton is a scalar field without self-interact…
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…
Non-Extreme and Ultra-Extreme Domain Walls and Their Global Space-Times
Mirjam Cvetič, Stephen Griffies, Harald H. Soleng
Non-extreme walls (bubbles with two insides) and ultra-extreme walls (bubbles of false vacuum decay) are discussed. Their respective energy densities are higher and lower than that…