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96 papers · 1 filter
Killing spinor initial data sets
Alfonso García-Parrado Gómez-Lobo, Juan A. Valiente Kroon
A 3+1 decomposition of the twistor and valence-2 Killing spinor equation is made using the space spinor formalism. Conditions on initial data sets for the Einstein vacuum equations…
Different approaches to the second order Klein-Gordon equation
Karim A. Malik, David Seery, Kishore N. Ananda
We derive the Klein--Gordon equation for a single scalar field coupled to gravity at second order in perturbation theory and leading order in slow-roll. This is done in two ways: w…
Duality Symmetric Strings, Dilatons and O(d,d) Effective Actions
David S. Berman, Daniel C. Thompson
We calculate the background field equations for the T-duality symmetric string building on previous work by including the effect of the Dilaton up to two-loops. Inclusion of the Di…
On the evolution of multiple low mass planets embedded in a circumbinary disc
Arnaud Pierens, Richard P. Nelson
Previous work has shown that the tidal interaction between a binary system and a circumbinary disc leads to the formation of a large inner cavity in the disc. Subsequent formation…
2MASS Galaxies in the Fornax Cluster Spectroscopic Survey
R. A. H. Morris, S. Phillipps, J. B. Jones +5
The Fornax Cluster Spectroscopic Survey (FCSS) is an all-object survey of a region around the Fornax Cluster of galaxies undertaken using the 2dF multi-object spectrograph on the A…
The cosmological constant in the brane world of string theory on
Anzhong Wang, N. O. Santos
Orbifold branes in string theory are investigated, and the general field equations on the branes are given explicitly for type II and heterotic string. It is shown that the effecti…