
Status:
Professor of Mathematics Tutorial Fellow St Peter's College.
Personal website:
+44 1865 615328
ORCID iD:

Research groups:
Address
University of Oxford
Andrew Wiles Building
Radcliffe Observatory Quarter
Woodstock Road
Oxford
OX2 6GG
Highlighted Publications:
Scattering on plane waves and the double copy
Classical and Quantum Gravity
issue 1
volume 35
(5 December 2017)
One-loop amplitudes on the Riemann sphere
JOURNAL OF HIGH ENERGY PHYSICS
issue 3
(16 March 2016)
Full text available
Two-loop scattering amplitudes from the Riemann sphere
Physical Review D
issue 12
volume 94
(1 January 2016)
New ambitwistor string theories
JOURNAL OF HIGH ENERGY PHYSICS
issue 11
(5 November 2015)
Full text available
Loop Integrands for Scattering Amplitudes from the Riemann Sphere.
Physical review letters
issue 12
volume 115
page 121603-
(16 September 2015)
Ambitwistor strings at null infinity and (subleading) soft limits
CLASSICAL AND QUANTUM GRAVITY
issue 5
volume 32
(5 March 2015)
Full text available
Ambitwistor strings in four dimensions.
Physical review letters
issue 8
volume 113
page 081602-
(19 August 2014)
Scattering amplitudes and Wilson loops in twistor space
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
issue 45
volume 44
(11 November 2011)
Full text available
Gravity, Twistors and the MHV Formalism
Communications in Mathematical Physics
volume 294
page 827-862
(2010)
Full text available
The polarized scattering equations for 6d superamplitudes
Physical Review Letters
Full text available
Recent Publications:
Maximal-helicity-violating scattering of gluons and gravitons in chiral strong fields
Physical Review Letters
issue 4
volume 125
page 041602-
(24 July 2020)
Supersymmetric S-matrices from the worldsheet in 10 & 11d
Physics Letters B
issue 10 May 2020
volume 804
(10 March 2020)
Supertwistor description of ambitwistor strings
Journal of High Energy Physics
issue 2020
volume 2020
(7 January 2020)
Celestial amplitudes and conformal soft theorems
Classical and Quantum Gravity
issue 20
volume 36
page 205018-205018
(27 September 2019)
Notes on the D=11 pure spinor superparticle
JOURNAL OF HIGH ENERGY PHYSICS
issue 8
(30 August 2019)
Full text available
Research interests:
My research interests lies in mathematical physics, focussing mostly on general relativity and quantum theory.
Much of my research is centred around twistor theory, a programme originally introduced by Roger Penrose as an approach to the unification of quantum theory and general relativity. Twistor theory now has strong links to string theory and finds wide application to problems in mathematical physics, geometry, nonlinear differential equations, particularly integrable systems. Much of my current work is on ideas arising from Witten's twistor-string theory and applications of twistor theory to scattering amplitudes. Further details of my research interests can be obtained from my publication list (see below for recent articles).
Prizes, awards, and scholarships:
Leverhulme Senior Research Fellow 2005-6, Leverhulme Research Fellow 2011-13