50 citations · 104 across the 4 of their papers we have counts for
7 papers
New Singularities in Unexpected Places
John D. Barrow, Alexander A. H. Graham
Spacetime singularities have been discovered which are physically much weaker than those predicted by the classical singularity theorems. Geodesics evolve through them and they onl…
Antineutrino induced Lambda(1405) production off the proton
Xiulei Ren, E. Oset, L. Alvarez-Ruso +1
We have studied the strangeness changing antineutrino induced reactions , with , , , , , , ,…
Varying-Alpha and K-Essence
Alexander A. H. Graham
We introduce a model which allows the fine structure constant (alpha) to vary throughout space and time due to a coupling to a scalar field with a non-canonical kinetic structure.…
Stationary Black Holes with Time-Dependent Scalar Fields
Alexander A. H. Graham, Rahul Jha
It has been well known since the 1970s that stationary black holes do not generically support scalar hair. Most of the no-hair theorems which support this depend crucially upon the…
Non-Existence of Black Holes with Non-Canonical Scalar Fields
Alexander A. H. Graham, Rahul Jha
We study the existence of stationary black holes with a non-canonical scalar field as a matter source. We prove a simple black hole no-hair theorem which rules out the existence of…
General Dynamics of Varying-Alpha Universes
John D. Barrow, Alexander A. H. Graham
We introduce and study extensions of the varying alpha theory of Bekenstein-Sandvik-Barrow-Magueijo to allow for an arbitrary coupling function and self-interaction potential term…