Research
Cosmology, Inflation, Primordial Black Holes, Modified Gravity
Interests
I work in the area of theoretical cosmology and gravity.
Within cosmology, I’m interested in all aspects of the structure and evolution of the universe, from its earliest moments to its behaviour today, and in observations which inform us about the universe. Predominantly, however, I have worked on the very early universe, and in particular a phase of accelerated expansion known as inflation. Inflation is thought to be the origin of all structure in the universe, and so is a hugely important period in its history. Inflation and the phases which follow it can also give rise to gravitational waves and primordial black holes. I am interested in what we can learn about inflation and fundamental physics from these observable signatures.
Recently I have also developed an interest in modified gravity and black holes in modified theories.
Publications

Publications of specific relevance to the Centre for Fundamental Physics
2024
Detecting the stochastic gravitational wave background from primordial black holes in slow-reheating scenariosPadilla LE Hidalgo JC Malik KA
Journal of Cosmology and Astroparticle Physics,
Iop Publishing vol. 2024 (12)
01-12-2024
Loop corrections in the separate universe pictureIacconi L Mulryne D
Journal of Cosmology and Astroparticle Physics,
Iop Publishing vol. 2024 (06)
01-06-2024
Numerical 1-loop correction from a potential yielding ultra-slow-roll dynamicsDavies MW Iacconi L Mulryne DJ
Journal of Cosmology and Astroparticle Physics,
Iop Publishing vol. 2024 (04)
01-04-20242023
Multi-field inflation with large scalar fluctuations: non-Gaussianity and perturbativityIacconi L
Journal of Cosmology and Astroparticle Physics,
Iop Publishing vol. 2023 (09), 033-033.
01-09-2023
A new approach and code for spinning black holes in modified gravityFernandes PGS Mulryne DJ
Classical and Quantum Gravity,
Iop Publishing vol. 40 (16), 165001-165001.
11-07-20232022
Exploring the small mass limit of stationary black holes in theories with Gauss–Bonnet termsFernandes PGS Delgado JFM
Classical and Quantum Gravity,
Iop Publishing vol. 39 (23), 235015-235015.
14-11-2022
Non-Gaussianity in inflationary scenarios for primordial black holesDavies MW Carrilho P
Journal of Cosmology and Astroparticle Physics,
Iop Publishing vol. 2022 (06), 019-019.
01-06-2022
The 4D Einstein–Gauss–Bonnet theory of gravity: a reviewFernandes PGS Carrilho P Clifton T Mulryne DJ
Classical and Quantum Gravity vol. 39 (6), 063001-063001.
28-02-20222021
Black Holes in the Scalar-Tensor Formulation of 4D Einstein-Gauss-Bonnet
Gravity: Uniqueness of Solutions, and a New Candidate for Dark MatterFernandes PGS Carrilho P Clifton T Mulryne DJ
Physical Review D: Particles, Fields, Gravitation and Cosmology,
American Physical Society vol. 104
11-08-2021
Non-Gaussianity after many-field reheatingCarrilho P Mulryne D Ronayne J
Physical Review D,
American Physical Society (Aps) vol. 103 (8), 083532-083532.
15-04-20212020
Observational constraints on the regularized 4D Einstein-Gauss-Bonnet theory of gravityClifton T Carrilho P Fernandes PGS Mulryne DJ
Physical Review D,
American Physical Society vol. 102 (8), 084005-084005.
01-10-2020
Derivation of Regularized Field Equations for the Einstein-Gauss-Bonnet
Theory in Four DimensionsFernandes PGS Carrilho P Clifton T Mulryne DJ
Physical Review D,
American Physical Society vol. 102 (2)
06-07-20202019
Dissecting the growth of the power spectrum for primordial black holesCarrilho P Malik KA
Physical Review D: Particles, Fields, Gravitation and Cosmology,
American Physical Society 26-11-2019
The primordial curvature perturbation from lattice simulationsImrith SV Mulryne DJ Rajantie A
Physical Review D,
American Physical Society vol. 100
30-09-20192018
Non-perturbative $δN$Imrith SV Mulryne DJ Rajantie A
Physical Review D, Particles and Fields,
American Physical Society vol. 98 (4)
14-08-2018
Attractor Behaviour in Multifield InflationCarrilho P RONAYNE J TENKANEN T
Journal of Cosmology and Astroparticle Physics,
Iop Publishing 21-06-2018
Numerically evaluating the bispectrum in curved field-space - with
PyTransport 2.0Ronayne JW
Journal of Cosmology and Astroparticle Physics 16-01-20182017
Linear density perturbations in multifield coupled quintessenceLeithes A Malik KA Nunes NJ
Physical Review D vol. 95 (12)
15-06-20172016
Numerical evaluation of the bispectrum in multiple field inflation—the transport approach with codeDias M Frazer J Seery D
Journal of Cosmology and Astroparticle Physics vol. 2016 (12), 033-033.
19-12-2016
Non-Gaussianity in multiple three-form field inflationKumar KS Mulryne DJ Nunes NJ
Physical Review D - Particles, Fields, Gravitation and Cosmology vol. 94 (10)
07-11-2016
The Separate Universe Approach to Soft LimitsKenton Z Mulryne DJ
Journal of Cosmology and Astroparticle Physics,
Iop Publishing: Hybrid Open Access vol. 2016
21-10-2016
PyTransport: A Python package for the calculation of inflationary
correlation functionsMulryne DJ Ronayne JW
01-09-20162015
The squeezed limit of the bispectrum in multi-field inflationKenton Z
Journal of Cosmology and Astroparticle Physics (10)
08-10-2015
Generating the cosmic microwave background power asymmetry withKenton Z Mulryne DJ
Physical Review D vol. 92 (2)
01-07-2015
Resolving primordial physics through correlated signaturesEnqvist K Mulryne DJ Nurmi S
Journal of Cosmology and Astroparticle Physics,
Iop Publishing vol. 2015 (05), 010-010.
01-05-20152014
The curvature perturbation at second orderDias M Elliston J Mulryne D Seery D
Jcap02(2015)040 13-10-2014
General analytic predictions of two-field inflation and perturbative
reheatingElliston J Orani S
Phys. Rev. D vol. 89
19-02-2014
Exploring Two-Field Inflation in the Wess-Zumino ModelEllis J Mavromatos NE
23-01-20142013
What Planck does not tell us about inflationElliston J Mulryne DJ Tavakol R
Phys.Rev. D vol. 88
26-07-2013
Transport techniques for non-GaussianityMulryne DJ
19-02-2013
Transporting non-Gaussianity from sub to super-horizon scalesMulryne DJ
15-02-20132012
Three-form inflation and non-GaussianityMulryne DJ Noller J
Jcap vol. 1212
10-09-2012
Transport equations for the inflationary trispectrumAnderson GJ Mulryne DJ
Jcap10(2012)019 30-04-2012
Large trispectrum in two-field slow-roll inflationElliston J Alabidi L Huston I Mulryne DJ
Jcap vol. 1209
30-03-2012
Inflationary perturbation theory is geometrical optics in phase spaceSeery D Mulryne DJ
Jcap vol. 09
12-03-20122011
Towards an observational appraisal of string cosmologyMulryne DJ Ward J
Classical Quant Grav vol. 28 (20)
21-10-2011
Non-Gaussianity from the hybrid potentialMulryne D Orani S Rajantie A
24-07-2011
Evolution of non-Gaussianity in multi-scalar field modelsElliston J Mulryne D Seery D
Int.J.Mod.Phys. A vol. 26, 3821-3832.
12-07-2011
Evolution of fNL to the adiabatic limitElliston J Mulryne DJ Seery D
Jcap vol. 1111
10-06-2011
Evolution of fNL to the adiabatic limitElliston J Seery D Tavakol R
Journal of Cosmology and Astroparticle Physics (11)
01-01-2011
EVOLUTION OF NON-GAUSSIANITY IN MULTI-SCALAR FIELD MODELSELLISTON J MULRYNE D SEERY D TAVAKOL R
International Journal of Modern Physics Conference Series,
World Scientific Publishing vol. 3, 203-214.
01-01-20112010
Moment transport equations for the primordial curvature perturbationMulryne DJ Seery D
Jcap vol. 04
18-08-2010
The high-density regime of kinetic-dominated loop quantum cosmologyBojowald M Mulryne D Tavakol R
Phys.Rev.D vol. 82
22-04-20102009
Non-Gaussianity constrains hybrid inflationMulryne D Seery D
18-11-2009
Moment transport equations for non-GaussianityMulryne DJ Seery D
Jcap vol. 1001
11-09-2009
Dynamics and stability of light-like tachyon condensationBarnaby N Mulryne DJ Nunes NJ
J High Energy Phys (3)
01-03-2009
Non-linear non-local CosmologyNunes NJ Khalil S
DARK SIDE OF THE UNIVERSE. vol. 1115, 329-334.
01-01-2009
Gravitational wave background from superinflation in loop quantum cosmologyCopeland EJ Nunes NJ Shaeri M
Phys Rev D vol. 79 (2)
01-01-20092008
SOME COSMOLOGICAL CONSEQUENCES OF LOOP QUANTUM GRAVITYMULRYNE DJ TAVAKOL R
The Eleventh Marcel Grossmann Meeting., 1915-1919.
01-09-2008
Diffusing nonlocal inflation: Solving the field equations as an initial value problemMulryne DJ
Phys Rev D vol. 78 (6)
01-09-2008
Superinflation in loop quantum cosmologyCopeland EJ Mulryne DJ Shaeri M
Phys Rev D vol. 77 (2)
01-01-20082007
Nonlinear vector perturbations in a contracting universeMena FC Mulryne DJ
Classical Quant Grav vol. 24 (10), 2721-2734.
21-05-20072006
Constraints on a scale invariant power spectrum from superinflation in loop quantum cosmologyMulryne DJ Nunes NJ
Phys Rev D vol. 74 (8)
01-10-2006
Graceful entrance to braneworld inflationLidsey JE
Phys Rev D vol. 73 (8)
01-04-20062005
An Emergent Universe from a LoopTavakol R Mulryne DJ
Physical Review D vol. D71, 123512-1-123512-11.
01-06-2005
Inflationary cosmology and oscillating universes in loop quantum cosmologyMulryne DJ Nunes NJ Tavakol R
International Journal of Modern Physics A vol. 20 (11), 2347-2357.
30-04-20052004
Oscillatory universes in loop quantum cosmology and initial conditions for inflationTavakol R LIDSEY JE Mulryne D
Physical Review D vol. D70, 063521-1-063521-6.
01-09-2004
Inflationary Cosmology and Quantization Ambiguities in Semi-Classical Loop Quantum GravityTavakol R LIDSEY JE Mulryne DJ Bojowald M
Phys Rev vol. D70, 043530-1-043530-15.
01-01-2004