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On Inhomogeneity of a String Bit Model for Quantum Gravity
C. -W. H. lee, R. B. Mann
We study quantum gravitational effect on a two-dimensional open universe with one particle by means of a string bit model. We find that matter is necessarily homogeneously distribu…
On the Thermodynamics of NUT charged spaces
Robert Mann, Cristian Stelea
We discuss and compare at length the results of two methods used recently to describe the thermodynamics of Taub-NUT solutions in a deSitter background. In the first approach ($\ma…
A Review of the N-bound and the Maximal Mass Conjectures Using NUT-Charged dS Spacetimes
R. Clarkson, A. M. Ghezelbash, R. B. Mann
The proposed dS/CFT correspondence remains an intriguing paradigm in the context of string theory. Recently it has motivated two interesting conjectures: the entropic N-bound and t…
Nut Charged Space-times and Closed Timelike Curves on the Boundary
Dumitru Astefanesei, Robert B. Mann, Eugen Radu
We consider higher dimensional generalizations of the four dimensional topological Taub-NUT-AdS solutions, where the angular spheres are replaced by planes and hyperboloids. The th…
Breakdown of the Entropy/Area Relationship for NUT-charged Spacetimes
Dumitru Astefanesei, Robert B. Mann, Eugen Radu
We demonstrate that -dimensional, locally asymptotically anti-deSitter spacetimes with nonzero NUT charge generically do not respect the usual relationship between area and…
New Reducible Membrane Solutions in D=11 Supergravity
R. Clarkson, A. M. Ghezelbash, R. B. Mann
We construct generalized 11D supergravity solutions of fully localized D2/D6 brane intersections. These solutions are obtained by embedding Taub-NUT and/or self-dual geometries lif…