565 citations · 5.9k across the 83 of their papers we have counts for
83 papers
Positive Energy Functional for Massless Scalars in Rotating Black Hole Backgrounds of Maximal Ungauged Supergravity
M. Cvetic, G. W. Gibbons, C. N. Pope +1
We outline a proof of the stability of a massless neutral scalar field in the background of a wide class of four dimensional asymptotically flat rotating and ``electrically cha…
Cosmological aspects of the Eisenhart-Duval lift
M. Cariglia, A. Galajinsky, G. W. Gibbons +1
A cosmological extension of the Eisenhart-Duval metric is constructed by incorporating a cosmic scale factor and the energy-momentum tensor into the scheme. The dynamics of the spa…
STU Black Holes and SgrA*
M. Cvetic, G. W. Gibbons, C. N. Pope
The equations of null geodesics in the STU family of rotating black hole solutions of supergravity theory, which may be considered as deformations of the vacuum Kerr metric, are co…
Jacobi-Maupertius metric and Kepler equation
Sumanto Chanda, G. W. Gibbons, Partha Guha
This article studies the application of the Jacobi-Eisenhart lift, Jacobi metric and Maupertius transformation to the Kepler system. We start by reviewing fundamentals and the Jaco…
Jacobi-Maupertuis-Eisenhart metric and geodesic flows
Sumanto Chanda, G. W. Gibbons, Partha Guha
The Jacobi metric derived from the line element by one of the authors is shown to reduce to the standard formulation in the non-relativistic approximation. We obtain the Jacobi met…
Photon Spheres and Sonic Horizons in Black Holes from Supergravity and Other Theories
M. Cvetic, G. W. Gibbons, C. N. Pope
We study closed photon orbits in spherically-symmetric static solutions of supergravity theories, a Horndeski theory, and a theory of quintessence. These orbits lie in what we shal…