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
Papazoglou A
(2010)
Strong coupling in extended Horava-Lifshitz gravity
in Physics Letters B
Pontzen A
(2011)
Linearization of homogeneous, nearly-isotropic cosmological models
in Classical and Quantum Gravity
Pourtsidou A
(2011)
Scaling configurations of cosmic superstring networks and their cosmological implications
in Physical Review D
Regan D
(2010)
Cosmic string power spectrum, bispectrum, and trispectrum
in Physical Review D
Regan D
(2010)
General CMB and Primordial Trispectrum Estimation
Regan D
(2009)
Cosmic String Power Spectrum, Bispectrum and Trispectrum
Regan D
(2010)
General CMB and primordial trispectrum estimation
in Physical Review D
Regan D
(2012)
Universal non-Gaussian initial conditions for N -body simulations
in Physical Review D
Renaux-Petel S
(2012)
On the redundancy of operators and the bispectrum in the most general second-order scalar-tensor theory
in Journal of Cosmology and Astroparticle Physics
Renaux-Petel S
(2010)
On the squeezed limit of the bispectrum in general single field inflation
in Journal of Cosmology and Astroparticle Physics
Renaux-Petel S
(2011)
Orthogonal non-Gaussianities from Dirac-Born-Infeld Galileon inflation
in Classical and Quantum Gravity
Renaux-Petel S
(2012)
Universality in Multifield Inflation from String Theory
Renaux-Petel S
(2009)
Nonlinear perturbations of cosmological scalar fields with non-standard kinetic terms
in Journal of Cosmology and Astroparticle Physics
Renaux-Petel S
(2011)
Orthogonal non-Gaussianities from Dirac-Born-Infeld Galileon inflation
Renaux-Petel S
(2009)
Combined local and equilateral non-Gaussianities from multifield DBI inflation
in Journal of Cosmology and Astroparticle Physics
Renaux-Petel S
(2011)
Orthogonal non-Gaussianities from Dirac-Born-Infeld Galileon inflation
in Classical and Quantum Gravity
Renaux-Petel S.
(2012)
Universality in multifield inflation from string theory
in Proceedings of the 47th Rencontres de Moriond on Cosmology 2012
Renaux-Petel, Sebastien
(2010)
Local non-Gaussianities at third order in multifield models and the ekpyrotic trispectrum
Renaux-Petel, Sebastien
(2010)
Primordial bispectrum and trispectrum in multifield Dirac- Born-Infeld inflation
Rham C
(2013)
Massive gravity on de Sitter and unique candidate for partially massless gravity
in Journal of Cosmology and Astroparticle Physics
Rinne O
(2008)
Constrained evolution in axisymmetry and the gravitational collapse of prolate Brill waves
in Classical and Quantum Gravity
Rinne O
(2009)
Explicit solution of the linearized Einstein equations in the transverse-traceless gauge for all multipoles
in Classical and Quantum Gravity
Rinne O
(2009)
Implementation of higher-order absorbing boundary conditions for the Einstein equations
in Classical and Quantum Gravity
Rinne O
(2010)
An axisymmetric evolution code for the Einstein equations on hyperboloidal slices
in Classical and Quantum Gravity
Rudjord Ø
(2009)
AN ESTIMATE OF THE PRIMORDIAL NON-GAUSSIANITY PARAMETER f NL USING THE NEEDLET BISPECTRUM FROM WMAP
in The Astrophysical Journal
Rudjord Ø
(2010)
DIRECTIONAL VARIATIONS OF THE NON-GAUSSIANITY PARAMETER f NL
in The Astrophysical Journal
Schmittfull M
(2013)
Fast estimation of gravitational and primordial bispectra in large scale structures
in Physical Review D
Seery D
(2009)
Inflationary trispectrum from graviton exchange
in Journal of Cosmology and Astroparticle Physics
Seery D
(2008)
One-loop corrections to the curvature perturbation from inflation
in Journal of Cosmology and Astroparticle Physics
Seery D
(2008)
Non-Gaussianity of inflationary field perturbations from the field equation
in Journal of Cosmology and Astroparticle Physics
Seery D
(2009)
Magnetogenesis and the primordial non-gaussianity
in Journal of Cosmology and Astroparticle Physics
Seery D
(2009)
A parton picture of de Sitter space during slow-roll inflation
in Journal of Cosmology and Astroparticle Physics
Sefusatti E
(2012)
Effects and detectability of quasi-single field inflation in the large-scale structure and cosmic microwave background
in Journal of Cosmology and Astroparticle Physics
Sefusatti E
(2009)
Constraining running non-gaussianity
in Journal of Cosmology and Astroparticle Physics
Shaw D
(2011)
Testable solution of the cosmological constant and coincidence problems
in Physical Review D
Sollom I
(2009)
Cold dark matter isocurvature perturbations: Constraints and model selection
in Physical Review D
Sotiriou T
(2011)
Lower-dimensional Horava-Lifshitz gravity
in Physical Review D
Sotiriou T
(2011)
Generalizations of teleparallel gravity and local Lorentz symmetry
in Physical Review D
Sotiriou T
(2009)
Phenomenologically Viable Lorentz-Violating Quantum Gravity
in Physical Review Letters
Sotiriou T
(2009)
Quantum gravity without Lorentz invariance
in Journal of High Energy Physics
Sotiriou T
(2011)
Horava-Lifshitz gravity: a status report
in Journal of Physics: Conference Series
Sotiriou TP
(2011)
Comment on "Detecting vanishing dimensions via primordial gravitational wave astronomy".
in Physical review letters
Steinhardt P
(2009)
Dark energy, inflation, and extra dimensions
in Physical Review D