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Department of Applied Mathematics and Theoretical Physics

I am a postdoctoral research associate at DAMTP. The main goal of most of my research is directed towards testing General Relativity (GR) in the strong field, dynamical regime.

Publications

Evolution of Einstein-scalar-Gauss-Bonnet gravity using a modified harmonic formulation
WE East, JL Ripley
– Physical Review D
(2021)
103,
044040
Dynamics of a ${\mathbb{Z}}_{2}$ symmetric EdGB gravity in spherical symmetry
JL Ripley, F Pretorius
– Classical and Quantum Gravity
(2020)
37,
155003
Scalarized black hole dynamics in Einstein-dilaton-Gauss-Bonnet gravity
JL Ripley, F Pretorius
– Physical Review D
(2020)
101,
044015
Excision and avoiding the use of boundary conditions in numerical relativity
JL Ripley
– Classical and Quantum Gravity
(2019)
36,
237001
Gravitational collapse in Einstein dilaton-Gauss-Bonnet gravity
JL Ripley, F Pretorius
– Classical and Quantum Gravity
(2019)
36,
134001
Hyperbolicity in spherical gravitational collapse in a Horndeski theory
JL Ripley, F Pretorius
– Physical Review D
(2019)
99,
084014
Black hole perturbation under a 2+2 decomposition in the action
JL Ripley, K Yagi
– Physical Review D
(2018)
97,
024009
NEC violation in mimetic cosmology revisited
A Ijjas, J Ripley, PJ Steinhardt
– Physics Letters B
(2016)
760,
132
X-ray decay lines from heavy nuclei in supernova remnants as a probe of the r-process origin and the birth periods of magnetars
JL Ripley, BD Metzger, A Arcones, G Martinez-Pinedo
– Monthly Notices of the Royal Astronomical Society
(2014)
438,
3243
Second Order Perturbations of Kerr Black Holes: Reconstruction of the Metric
N Loutrel, JL Ripley, E Giorgi, F Pretorius
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Research Group

Relativity and Gravitation

Room

BL.34

Telephone

01223 764292