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Dr. Tristan Mc Loughlin

Associate Professor (Pure & Applied Mathematics)

Head of School (School Office - Mathematics)

  Integrable systems   Mathematical Physics   Quantum field theory   Quantum gravity   STRING THEORY
 Exact Methods in Strongly Coupled Systems
 Exact methods in string and gauge theories
 New methods in exactly solvable models

Details Date
Advisory Panel of Journal of Physics A: Mathematical and Theoretical 2015-present
T. Klose, T. McLoughlin, Worldsheet Form Factors in AdS/CFT , Physical Review D, 87, 2013, Journal Article, PUBLISHED  DOI
Haehnel, Philipp and McLoughlin, Tristan, Conformal Higher Spin Theory and Twistor Space Actions, Journal of Physics A: Mathematical and Theoretical, 50, (48), 2017, p485401 , Journal Article, PUBLISHED  URL
Thomas Klose, Tristan McLoughlin, Dhritiman Nandan, Jan Plefka, Gabriele Travaglini , Double-Soft Limits of Gluons and Gravitons , Journal of High Energy Physics, 2015, Journal Article, PUBLISHED  DOI
Bargheer, T., Beisert, N., Galleas, W., Loebbert, F., McLoughlin, T., Exacting N = 4 superconformal symmetry, Journal of High Energy Physics, 2009, (11), 2009, Journal Article, PUBLISHED  DOI
Till Bargheer, Song He and Tristan McLoughlin, New Relations for Three-Dimensional Supersymmetric Scattering Amplitudes, Physical Review Letters, 108, (23), 2012, p5 , Journal Article, PUBLISHED  DOI
Klose, Thomas and McLoughlin, Tristan and Roiban, Radu and Zarembo, Konstantin, Worldsheet scattering in AdS_5 × S, 5, Journal of High Energy Physics, 2007, (3), 2007, Journal Article, PUBLISHED  DOI
McLoughlin, T., Swanson, I., N-impurity superstring spectra near the pp-wave limit, Nuclear Physics B, 702, (1-2), 2004, p86-108 , Journal Article, PUBLISHED  DOI
Tristan McLoughlin, Review of AdS/CFT Integrability, Chapter II.2: Quantum Strings in AdS_5 × S, 5, Letters in Mathematical Physics, 99, (1-3), 2012, p127-148 , Journal Article, PUBLISHED  DOI
Thomas Klose and Tristan McLoughlin, A light-cone approach to three-point functions in AdS_5 × S, 5, Journal of High Energy Physics, 2012, (4), 2012, Journal Article, PUBLISHED  DOI
McLoughlin, Tristan and Roiban, Radu, Spinning strings at one-loop in AdS(4) x P**3, JHEP, 12, 2008, p101-, Journal Article, PUBLISHED  DOI

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Marianne Leitner (DIAS), Tristan McLoughlin (TCD), Werner Nahm (DIAS), Eoin Ó Colgáin (Stony Brook), Joost Slingerland (NUIM) , Irish Quantum Foundations, 27th-29th May , 2015, DIAS, Meetings /Conferences Organised, PUBLISHED
Tristan McLoughlin, YRISW 2017, Feb 27th - Mar 3rd, 2017, TCD, Meetings /Conferences Organised, PUBLISHED
Jon-Ivar Skullerud (Maynooth), Joost Slingerland (Maynooth), Tristan McLoughlin (TCD), Leron Borsten (DIAS), Graham Kells (DIAS) , Irish Quantum Foundations, 26-27 May, 2016, NUIM Maynooth, Meetings /Conferences Organised, PUBLISHED
John Bulava (TCD), Tristan McLoughlin (TCD), Eoin Ó Colgáin (Stony Brook), Jon-Ivar Skullerud (NUIM), Joost Slingerland (NUIM) , Irish Quantum Foundations, May 30-31, 2014, Trinity College Dublin, Meetings /Conferences Organised, PUBLISHED
Brian Dolan (NUIM), Tristan McLoughlin (TCD), Eoin Ó Colgáin (Oviedo), Michael Peardon (TCD), Jon-Ivar Skullerud (NUIM), Joost Slingerland (NUIM) , Irish Quantum Foundations, 3-4 May 2013, 2013, Castletown House, Ireland, Meetings /Conferences Organised, PUBLISHED
Tristan McLoughlin, Multi-soft limits for gluon amplitudes - A symmetry algebra interpretation, Humboldt University Berlin, Jan 4th, 2017, Invited Talk, PUBLISHED
Tristan Mc Loughlin, AdS/CFT and Integrability: A path to exact results in Quantum Field Theory, UCD Applied & Computational Mathematics seminar, UCD, 1st Feb, 2017, Barry Wardell, Invited Talk, PUBLISHED
Tristan McLoughlin, Twistors and Conformal Higher-Spin Theory, Theory Group Seminar, Imperial College London, Nov 8th, 2016, Invited Talk, PUBLISHED
Tristan McLoughlin, Twistor Theory and Conformal Higher Spin, University of Vienna, May 9th, 2017, Stefan Fredenhagen, Invited Talk, PRESENTED
Tristan McLoughlin, Twistors and Conformal Higher-Spin Theory, Queen Mary University London, Nov 10th, 2016, Marco Bianchi, Invited Talk, PUBLISHED


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Many of my research interests centre around the goal of developing a deeper understanding of the nonperturbative behaviour of strongly coupled gauge theories. Such theories underpin our modern description of a wide range of physical phenomena from the existence of protons and neutrons, due to confinement in quantum chromodynamics (QCD), to the fractional quantum Hall effect (FQHE) for strongly coupled electrons in two-dimensions. As these phenomena occur beyond the regime where standard perturbative approaches are applicable we have limited theoretical tools with which to develop any physical understanding and there remain a great number of profound open questions. One novel approach to these problems, which is at the heart of much of my research, is the remarkable duality between specific quantum theories of gravity, such as string theory, and gauge theories. The duality relates the weakly interacting regime of one theory to the strongly coupled regime of the dual theory. While this makes proving the duality rather difficult, it means that we can learn about strongly coupled gauge theories by considering weakly interacting string theories. Furthermore, and just as interesting, it implies we can study problems in quantum gravity through the analysis of gauge theories. A separate, but related, theme in my research has been the study of scattering amplitudes in gauge theories, including gravitational theories and, most recently, higher-spin theories. From a conceptual point of view amplitudes are interesting as gedanken experiments which can give insight into the underlying properties of a given theory. Ultimately we are looking to find a mathematical reformulation of gravity that makes the known symmetries manifest, that gives an efficient method for computation and, most optimistically, to find a useful holographic description of asymptotically flat space-times that would give a definition of quantum gravity in such spaces.