Fundamental Physics and Observational Cosmology
Lead Research Organisation:
UNIVERSITY OF CAMBRIDGE
Department Name: Applied Maths and Theoretical Physics
Abstract
We aim to advance the confrontation between observational cosmology and fundamental physics by developing testable signatures of early universe theories which are of direct relevance to STFC-supported satellite and other experiments, such as Planck and Clover. This work entails making detailed quantitative observational predictions which can be used to distinguish between different inflation models, as well as those involving cosmic superstrings and textures. In particular, we wish to study cosmologies emerging from higher dimensional models in fundamental theory, and discover ways in which to differentiate these from conventional four-dimensional models. We will also use data from the late universe to develop probes of the cosmological constant, dark energy and the variation of the fundamental constants of nature. In addition, we will embark on a new project in gravitational physics, studying the existence, formation and consequences of black holes. We will consider the distinctive signatures of extra dimensions which the experimental study of black holes may be able to uncover.
Organisations
Publications
Langlois D
(2008)
Primordial perturbations and non-Gaussianities in DBI and general multifield inflation
in Physical Review D
Barrow J
(2008)
Varying-alpha cosmologies with potentials
in Physical Review D
Barrow J
(2010)
Simple types of anisotropic inflation
in Physical Review D
Brax P
(2008)
f ( R ) gravity and chameleon theories
in Physical Review D
Wantz O
(2010)
Axion cosmology revisited
in Physical Review D
Gibbons G
(2009)
Global embedding of the Kerr black hole event horizon into hyperbolic 3-space
in Physical Review D
Sotiriou T
(2011)
Lower-dimensional Horava-Lifshitz gravity
in Physical Review D
Herdeiro C
(2009)
Backreaction of frame dragging
in Physical Review D
Burrage C
(2009)
Active galactic nuclei shed light on axionlike particles.
in Physical review letters
Jacobson T
(2010)
Spinning black holes as particle accelerators.
in Physical review letters
Langlois D
(2008)
Primordial fluctuations and non-Gaussianities in multifield Dirac-Born-Infeld inflation.
in Physical review letters
Jacobson T
(2009)
Overspinning a black hole with a test body.
in Physical review letters
Brax P
(2010)
Tuning the mass of chameleon fields in Casimir force experiments.
in Physical review letters
Cvetic M
(2011)
Universal area product formulas for rotating and charged black holes in four and higher dimensions.
in Physical review letters
Sotiriou TP
(2009)
Phenomenologically viable Lorentz-violating quantum gravity.
in Physical review letters
Gibbons GW
(2009)
Naturalness of CP violation in the standard model.
in Physical review letters
Sotiriou TP
(2011)
Comment on "Detecting vanishing dimensions via primordial gravitational wave astronomy".
in Physical review letters
Hartle J
(2011)
Local observation in eternal inflation.
in Physical review letters
Gibbons GW
(2010)
Black holes in an expanding universe.
in Physical review letters
Chou AS
(2009)
Search for chameleon particles using a photon-regeneration technique.
in Physical review letters
Gibbons G
(2010)
Dark energy and projective symmetry
in Physics Letters B
Gibbons G
(2011)
Some spacetimes with higher rank Killing-Stäckel tensors
in Physics Letters B
Kubiznák D
(2009)
Generalized Killing-Yano equations in D = 5 gauged supergravity
in Physics Letters B
Papazoglou A
(2010)
Strong coupling in extended Horava-Lifshitz gravity
in Physics Letters B
Kubiznák D
(2009)
On the supersymmetric limit of Kerr-NUT-AdS metrics
in Physics Letters B