All Outputs (5)

Lifshitz flows in IIB and dual field theories (2014)
Journal Article
Burda, P., Gregory, R., & Ross, S. (2014). Lifshitz flows in IIB and dual field theories. Journal of High Energy Physics, 2014(11), Article 73. https://doi.org/10.1007/jhep11%282014%29073

We construct solutions describing flows between AdS and Lifshitz spacetimes in IIB supergravity. We find that flows from AdS5 can approach either AdS3 or Lifshitz3 in the IR depending on the values of the deformation from AdS5. Surprisingly, the choi... Read More about Lifshitz flows in IIB and dual field theories.

Vortex Hair on ADS Black Holes (2014)
Journal Article
Gregory, R., Gustainis, P., Kubizňák, D., Mann, R., & Wills, D. (2014). Vortex Hair on ADS Black Holes. Journal of High Energy Physics, 2014(11), Article 10. https://doi.org/10.1007/jhep11%282014%29010

We analyse vortex hair for charged rotating asymptotically AdS black holes in the abelian Higgs model. We give analytical and numerical arguments to show how the vortex interacts with the horizon of the black hole, and how the solution extends to the... Read More about Vortex Hair on ADS Black Holes.

Time dependent black holes and scalar hair (2014)
Journal Article
Chadburn, S., & Gregory, R. (2014). Time dependent black holes and scalar hair. Classical and Quantum Gravity, 31(19), Article 195006. https://doi.org/10.1088/0264-9381/31/19/195006

We show how to correctly account for scalar accretion onto black holes in scalar field models of dark energy by a consistent expansion in terms of a slow roll parameter. At leading order, we find an analytic solution for the scalar field within our H... Read More about Time dependent black holes and scalar hair.

Astrophysical black holes in screened modified gravity (2014)
Journal Article
Davis, A., Gregory, R., Jha, R., & Muir, J. (2014). Astrophysical black holes in screened modified gravity. Journal of Cosmology and Astroparticle Physics, 2014(08), Article 033. https://doi.org/10.1088/1475-7516/2014/08/033

Chameleon, environmentally dependent dilaton, and symmetron gravity are three models of modified gravity in which the effects of the additional scalar degree of freedom are screened in dense environments. They have been extensively studied in laborat... Read More about Astrophysical black holes in screened modified gravity.

Black holes as bubble nucleation sites (2014)
Journal Article
Gregory, R., Moss, I., & Withers, B. (2014). Black holes as bubble nucleation sites. Journal of High Energy Physics, 2014(3), https://doi.org/10.1007/jhep03%282014%29081

We consider the effect of inhomogeneities on the rate of false vacuum decay. Modelling the inhomogeneity by a black hole, we construct explicit Euclidean instantons which describe the nucleation of a bubble of true vacuum centred on the inhomogeneity... Read More about Black holes as bubble nucleation sites.