Dr David MulryneRoyal Society University Research Fellow | Reader in Theoretical Cosmology I DPA Senior Tutor Email: d.mulryne@qmul.ac.ukTelephone: 020 7882 7046Room Number: G. O. Jones Building, Room 512ProfileTeachingResearchPublicationsSupervisionPublic EngagementProfileI am a Royal Society University Research Fellow and Proleptic Reader in Theoretical Cosmology. I am the Senior Tutor for Physics and Astronomy, and the Astronomy Unit outreach coordinator. After receiving an MSci from Cambridge (2003) and a PhD from the Astronomy Unit at Queen Mary (2006), I held postdoctoral positions at DAMTP Cambridge, the Theory Group Imperial, and back at Queen Mary, before being awarded a Royal Society University Research Fellowship and Proleptic Lectureship here in 2014. My area of research is focused on theoretical aspects of cosmology and related areas. More information can be found on the research and publication tabs. I also have extensive experience of teaching, outreach, and public engagement work. External to Queen Mary, I have been a member of various national grant panels and am currently a member of the STFC Astronomy Grants Panel. TeachingTeaching at QMUL Currently I teach SPA7010 The Galaxy . I also supervise BSc, MSci, and astrophysics MSc students for their research projects, and I regularly work with and supervise PhD students. ResearchResearch 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. Information about a code for inflationary cosmology, PyTransport, that I have developed can be found at transportmethod.com. Examples of research funding:Royal Society University Research Fellowship (together with renewal and enhancement awards), 2014-2024. Astronomy Unit STFC Consolidated Grant 2023-2026 (co-I). Astronomy Unit STFC Consolidated Grant 2014-2017 (named researcher).PublicationsA full list of my publications can be found here. Davies MW, Iacconi L, Mulryne DJ (2024). Numerical 1-loop correction from a potential yielding ultra-slow-roll dynamics. nameOfConference DOI: 10.1088/1475-7516/2024/04/050 QMRO: qmroHref Iacconi L, Mulryne DJ (2023). Multi-field inflation with large scalar fluctuations: non-Gaussianity and perturbativity. nameOfConference DOI: 10.1088/1475-7516/2023/09/033 QMRO: https://qmro.qmul.ac.uk/xmlui/handle/123456789/91381 Fernandes PGS, Mulryne DJ (2023). A new approach and code for spinning black holes in modified gravity. nameOfConference DOI: 10.1088/1361-6382/ace232 QMRO: https://qmro.qmul.ac.uk/xmlui/handle/123456789/91382 Fernandes PGS, Mulryne DJ, Delgado JFM (2022). Exploring the small mass limit of stationary black holes in theories with Gauss–Bonnet terms. nameOfConference DOI: 10.1088/1361-6382/aca010 QMRO: https://qmro.qmul.ac.uk/xmlui/handle/123456789/83206 Davies MW, Carrilho P, Mulryne DJ (2022). Non-Gaussianity in inflationary scenarios for primordial black holes. nameOfConference DOI: 10.1088/1475-7516/2022/06/019 QMRO: https://qmro.qmul.ac.uk/xmlui/handle/123456789/80861 Fernandes PGS, Carrilho P, Clifton T et al. (2022). The 4D Einstein–Gauss–Bonnet theory of gravity: a review. nameOfConference DOI: 10.1088/1361-6382/ac500a QMRO: https://uat2-qmro.qmul.ac.uk/xmlui/handle/123456789/77580 Fernandes PGS, Carrilho P, Clifton T et al. (2021). Black Holes in the Scalar-Tensor Formulation of 4D Einstein-Gauss-Bonnet Gravity: Uniqueness of Solutions, and a New Candidate for Dark Matter. nameOfConference DOI: 10.1103/PhysRevD.104.044029 QMRO: https://uat2-qmro.qmul.ac.uk/xmlui/handle/123456789/73862 Carrilho P, Mulryne D, Ronayne J (2021). Non-Gaussianity after many-field reheating. nameOfConference DOI: 10.1103/physrevd.103.083532 QMRO: https://qmro.qmul.ac.uk/xmlui/handle/123456789/73085 Clifton T, Carrilho P, Fernandes PGS et al. (2020). Observational constraints on the regularized 4D Einstein-Gauss-Bonnet theory of gravity. nameOfConference DOI: 10.1103/physrevd.102.084005 QMRO: https://uat2-qmro.qmul.ac.uk/xmlui/handle/123456789/67659 Fernandes PGS, Carrilho P, Clifton T et al. (2020). Derivation of Regularized Field Equations for the Einstein-Gauss-Bonnet Theory in Four Dimensions. nameOfConference DOI: 10.1103/PhysRevD.102.024025 QMRO: https://uat2-qmro.qmul.ac.uk/xmlui/handle/123456789/65708 Carrilho P, Malik KA, Mulryne DJ (2019). Dissecting the growth of the power spectrum for primordial black holes. nameOfConference DOI: 10.1103/PhysRevD.100.103529 QMRO: https://uat2-qmro.qmul.ac.uk/xmlui/handle/123456789/61798 Imrith SV, Mulryne DJ, Rajantie A (2019). The primordial curvature perturbation from lattice simulations. nameOfConference DOI: 10.1103/PhysRevD.100.043543 QMRO: https://uat2-qmro.qmul.ac.uk/xmlui/handle/123456789/59637 Imrith SV, Mulryne DJ, Rajantie A (2018). Non-perturbative $δN$. nameOfConference DOI: 10.1103/PhysRevD.98.043513 QMRO: https://uat2-qmro.qmul.ac.uk/xmlui/handle/123456789/44165 Carrilho P, MULRYNE DJ, RONAYNE J et al. (2018). Attractor Behaviour in Multifield Inflation. nameOfConference DOI: 10.1088/1475-7516/2018/06/032 QMRO: https://uat2-qmro.qmul.ac.uk/xmlui/handle/123456789/41843 Ronayne JW, Mulryne DJ (2018). Numerically evaluating the bispectrum in curved field-space - with PyTransport 2.0. nameOfConference DOI: 10.1088/1475-7516/2018/01/023 QMRO: https://uat2-qmro.qmul.ac.uk/xmlui/handle/123456789/25893 Leithes A, Malik KA, Mulryne DJ et al. (2017). Linear density perturbations in multifield coupled quintessence. nameOfConference DOI: 10.1103/PhysRevD.95.123519 QMRO: https://uat2-qmro.qmul.ac.uk/xmlui/handle/123456789/15789 Dias M, Frazer J, Mulryne DJ et al. (2016). Numerical evaluation of the bispectrum in multiple field inflation—the transport approach with code. nameOfConference DOI: 10.1088/1475-7516/2016/12/033 QMRO: https://uat2-qmro.qmul.ac.uk/xmlui/handle/123456789/15887 Kumar KS, Mulryne DJ, Nunes NJ et al. (2016). Non-Gaussianity in multiple three-form field inflation. nameOfConference DOI: 10.1103/PhysRevD.94.103504 QMRO: https://uat2-qmro.qmul.ac.uk/xmlui/handle/123456789/14807 Kenton Z, Mulryne DJ (2016). The Separate Universe Approach to Soft Limits. nameOfConference DOI: 10.1088/1475-7516/2016/10/035 QMRO: https://uat2-qmro.qmul.ac.uk/xmlui/handle/123456789/18203 Mulryne DJ, Ronayne JW (2016). PyTransport: A Python package for the calculation of inflationary correlation functions. nameOfConference DOI: 10.21105/joss.00494 QMRO: https://uat2-qmro.qmul.ac.uk/xmlui/handle/123456789/15890 Kenton Z, Mulryne DJ (2015). The squeezed limit of the bispectrum in multi-field inflation. nameOfConference DOI: 10.1088/1475-7516/2015/10/018 QMRO: https://uat2-qmro.qmul.ac.uk/xmlui/handle/123456789/17613 Kenton Z, Mulryne DJ, Thomas S (2015). Generating the cosmic microwave background power asymmetry with. nameOfConference DOI: 10.1103/PhysRevD.92.023505 QMRO: https://uat2-qmro.qmul.ac.uk/xmlui/handle/123456789/12621 Enqvist K, Mulryne DJ, Nurmi S (2015). Resolving primordial physics through correlated signatures. nameOfConference DOI: 10.1088/1475-7516/2015/05/010 QMRO: https://uat2-qmro.qmul.ac.uk/xmlui/handle/123456789/10171 Dias M, Elliston J, Frazer J et al. (2014). The curvature perturbation at second order. nameOfConference DOI: 10.1088/1475-7516/2015/02/040 QMRO: qmroHref Elliston J, Orani S, Mulryne DJ (2014). General analytic predictions of two-field inflation and perturbative reheating. nameOfConference DOI: 10.1103/physrevd.89.103532 QMRO: https://uat2-qmro.qmul.ac.uk/xmlui/handle/123456789/18853 Ellis J, Mavromatos NE, Mulryne DJ (2014). Exploring Two-Field Inflation in the Wess-Zumino Model. nameOfConference DOI: 10.1088/1475-7516/2014/05/012 QMRO: qmroHref Elliston J, Mulryne DJ, Tavakol R (2013). What Planck does not tell us about inflation. nameOfConference DOI: 10.1103/physrevd.88.063533 QMRO: qmroHref Mulryne DJ (2013). Transport techniques for non-Gaussianity. nameOfConference DOI: 10.1142/9789814623995_0209 QMRO: qmroHref Mulryne DJ (2013). Transporting non-Gaussianity from sub to super-horizon scales. nameOfConference DOI: 10.1088/1475-7516/2013/09/010 QMRO: qmroHref Mulryne DJ, Noller J, Nunes NJ (2012). Three-form inflation and non-Gaussianity. nameOfConference DOI: 10.1088/1475-7516/2012/12/016 QMRO: qmroHref MULRYNE DJ, TAVAKOL R (2008). SOME COSMOLOGICAL CONSEQUENCES OF LOOP QUANTUM GRAVITY. The Eleventh Marcel Grossmann Meeting DOI: 10.1142/9789812834300_0286 QMRO: qmroHref Anderson GJ, Mulryne DJ, Seery D (2012). Transport equations for the inflationary trispectrum. nameOfConference DOI: 10.1088/1475-7516/2012/10/019 QMRO: qmroHref ELLISTON J, MULRYNE D, SEERY D et al. (2011). EVOLUTION OF NON-GAUSSIANITY IN MULTI-SCALAR FIELD MODELS. nameOfConference DOI: 10.1142/s2010194511001292 QMRO: qmroHref Elliston J, Alabidi L, Huston I et al. (2012). Large trispectrum in two-field slow-roll inflation. nameOfConference DOI: 10.1088/1475-7516/2012/09/001 QMRO: qmroHref Seery D, Mulryne DJ, Frazer J et al. (2012). Inflationary perturbation theory is geometrical optics in phase space. nameOfConference DOI: 10.1088/1475-7516/2012/09/010 QMRO: qmroHref Mulryne DJ, Ward J (2011). Towards an observational appraisal of string cosmology. nameOfConference DOI: 10.1088/0264-9381/28/20/204010 QMRO: qmroHref Mulryne D, Orani S, Rajantie A (2011). Non-Gaussianity from the hybrid potential. nameOfConference DOI: 10.1103/physrevd.84.123527 QMRO: qmroHref Elliston J, Mulryne D, Seery D et al. (2011). Evolution of non-Gaussianity in multi-scalar field models. nameOfConference DOI: 10.1142/S0217751X11054280 QMRO: qmroHref Elliston J, Mulryne DJ, Seery D et al. (2011). Evolution of fNL to the adiabatic limit. nameOfConference DOI: 10.1088/1475-7516/2011/11/005 QMRO: https://uat2-qmro.qmul.ac.uk/xmlui/handle/123456789/65710 Elliston J, Mulryne DJ, Seery D et al. (2011). Evolution of fNL to the adiabatic limit. nameOfConference DOI: 10.1088/1475-7516/2011/11/005 QMRO: qmroHref Mulryne DJ, Seery D, Wesley D (2010). Moment transport equations for the primordial curvature perturbation. nameOfConference DOI: 10.1088/1475-7516/2011/04/030 QMRO: qmroHref Bojowald M, Mulryne D, Nelson W et al. (2010). The high-density regime of kinetic-dominated loop quantum cosmology. nameOfConference DOI: 10.1103/physrevd.82.124055 QMRO: qmroHref Mulryne D, Seery D, Wesley D (2009). Non-Gaussianity constrains hybrid inflation. nameOfConference DOI: doi QMRO: https://uat2-qmro.qmul.ac.uk/xmlui/handle/123456789/65711 Mulryne DJ, Seery D, Wesley D (2009). Moment transport equations for non-Gaussianity. nameOfConference DOI: 10.1088/1475-7516/2010/01/024 QMRO: qmroHref Barnaby N, Mulryne DJ, Nunes NJ et al. (2009). Dynamics and stability of light-like tachyon condensation. nameOfConference DOI: 10.1088/1126-6708/2009/03/018 QMRO: qmroHref Copeland EJ, Mulryne DJ, Nunes NJ et al. (2009). Gravitational wave background from superinflation in loop quantum cosmology. nameOfConference DOI: 10.1103/PhysRevD.79.023508 QMRO: qmroHref Nunes NJ, Mulryne DJ (2009). Non-linear non-local Cosmology. nameOfConference DOI: 10.1063/1.3131521 QMRO: qmroHref Mulryne DJ, Nunes NJ (2008). Diffusing nonlocal inflation: Solving the field equations as an initial value problem. nameOfConference DOI: 10.1103/PhysRevD.78.063519 QMRO: qmroHref Copeland EJ, Mulryne DJ, Nunes NJ et al. (2008). Superinflation in loop quantum cosmology. nameOfConference DOI: 10.1103/PhysRevD.77.023510 QMRO: qmroHref Mena FC, Mulryne DJ, Tavakol R (2007). Nonlinear vector perturbations in a contracting universe. nameOfConference DOI: 10.1088/0264-9381/24/10/015 QMRO: qmroHref Mulryne DJ, Nunes NJ (2006). Constraints on a scale invariant power spectrum from superinflation in loop quantum cosmology. nameOfConference DOI: 10.1103/PhysRevD.74.083507 QMRO: qmroHref Lidsey JE, Mulryne DJ (2006). Graceful entrance to braneworld inflation. nameOfConference DOI: 10.1103/PhysRevD.73.083508 QMRO: qmroHref Tavakol R, LIDSEY JE, Mulryne DJ et al. (2005). An Emergent Universe from a Loop. nameOfConference DOI: 10.1103/PhysRevD.71.123512 QMRO: qmroHref Mulryne DJ, Nunes NJ, Tavakol R et al. (2005). Inflationary cosmology and oscillating universes in loop quantum cosmology. nameOfConference DOI: 10.1142/s0217751x05024614 QMRO: qmroHref Tavakol R, LIDSEY JE, Mulryne D et al. (2004). Oscillatory universes in loop quantum cosmology and initial conditions for inflation. nameOfConference DOI: 10.1103/PhysRevD.70.063521 QMRO: qmroHref Tavakol R, LIDSEY JE, Mulryne DJ et al. (2004). Inflationary Cosmology and Quantization Ambiguities in Semi-Classical Loop Quantum Gravity. nameOfConference DOI: 10.1103/PhysRevD.70.043530 QMRO: qmroHref SupervisionI supervise PhD students in the area of early universe cosmology and related areas of theoretical physics. Current students: Mr Matthew Davies, Mr Ethan Milligan, Mr Andrea Costantini. Former students: Dr Zac Kenton (2018), Dr Shailee Imrith (2019), Dr John Ronayne (2019), Dr Pedro Fernandes (2022) PhD project summary for prospective students: Early universe physics.Public EngagementOutreach and engagement with society I enjoy outreach work a lot and regularly lecture to visiting students at Queen Mary, and visit schools myself to give talks. I take part in various other outreach activities and am the astronomy unit outreach coordinator. If you are interested in me or another member of the Unit delivering an activity please get in touch. Talks I have available include various versions of an introduction to cosmology, and an introduction to cosmic inflation -- you can see one version delivered at the Royal Institution at this link; "How Big is the Universe?" aimed at a younger audience; "Ping Ping Particle Physics” aimed at students studying GCSE or A-level physics, which includes a demonstration of a particle accelerator using a Van Der Graaf generator, a ping pong ball, and my saucepan lid. Recently I’ve led the purchase of a 5 metre Planetarium for teaching and outreach work. Much of the content we use is generously provided for free by the British Fulldome Institute.