Dr Ricardo Monteiro
Reader
School of Physical and Chemical Sciences
Queen Mary University of London
Queen Mary University of London
Research
Gravity, Quantum field theory, String theory
Interests
I have a broad interest in high-energy theoretical physics. My recent work focuses on perturbative aspects of quantum field theory, quantum gravity and string theory.One of my main areas of activity has been the perturbative description of gravity as a double copy of gauge theory. This idea appeared in the study of scattering amplitudes, which are notoriously complicated in theories of gravity if traditional methods are used. The double-copy technique allows us to perform certain gravity computations using much simpler computations in gauge theory. My goals here are two-fold: to investigate the mathematical structure behind the double copy, including at loop level (quantum effects), and to apply this technique to a wider set of problems, including the study of classical solutions (perturbative or exact) in gravity theories. A highlight of my work has been the interpretation of exact black hole solutions as a double copy of gauge theory solutions.
My other major line of work is the description of certain quantum field theories in terms of worldsheet models inspired by string theory, known as ambitwistor strings. These models underlie a new mathematical formalism for the scattering amplitudes of massless particles, based on scattering equations that relate the kinematic invariants to the moduli space of a sphere. My main focus here has been the extension of this very interesting formalism to loop level, which opens the possibility of a much wider application. Both gauge theory and gravity admit this type of formalism, and this is also a promising avenue to understand the double-copy relation at a more fundamental level. In addition, my recent work has shown how this progress for field theory amplitudes can be imported into fully-fledged string theory, where the amplitudes are much more involved.
Apart from these topics, I maintain my interest for areas in which I have worked in the past. These include black holes in general relativity and in string theory, and the AdS/CFT correspondence between a theory of gravity (string theory) and a lower-dimensional (conformal) field theory.
Interest/expertise relevant to this research centre: my expertise falls entirely within the remit of the Centre for Fundamental Physics.
Publications
Publications of specific relevance to the Centre for Fundamental Physics2024
Doran G, Monteiro R and Wikeley S (2024). On the anomaly interpretation of amplitudes in self-dual Yang-Mills and gravity. Journal of High Energy Physics, Springer 16-07-2024
Monteiro R (2024). No U(1) ‘electric-magnetic’ duality in Einstein gravity. Journal of High Energy Physics, Springer Nature vol. 2024 (4) 17-04-2024
2023
Monteiro R, Wikeley S and Stark-Muchao R (2023). Anomaly and double copy in quantum self-dual Yang-Mills and gravity. Journal of High Energy Physics, Springer 05-09-2023
Monteiro R (2023). From Moyal deformations to chiral higher-spin theories and to celestial algebras. Journal of High Energy Physics 09-03-2023
Monteiro R (2023). Celestial chiral algebras, colour-kinematics duality and integrability. Journal of High Energy Physics, Springer Science and Business Media LLC vol. 2023 (1) 18-01-2023
2022
Travaglini G, Brandhuber A, Dorey P, McLoughlin T, Abreu S, Bern Z, Bjerrum-Bohr NEJ, Blümlein J, Britto R, Carrasco JJM, Chicherin D, Chiodaroli M, Damgaard PH, Del Duca V, Dixon LJ, Dorigoni D, Duhr C, Geyer Y, Green MB, Herrmann E, et al. (2022). The SAGEX review on scattering amplitudes., Editors: Travaglini G, Dorey P, Brandhuber A and McLoughlin T. Journal of Physics A: Mathematical and Theoretical vol. 55 (44), 443001-443001. 19-12-2022
Kosower DA, Monteiro R and O’Connell D (2022). Chapter 14: Classical gravity from scattering amplitudes. Journal of Physics A: Mathematical and Theoretical vol. 55 (44), 443015-443015. 04-11-2022
Monteiro R, NAGY S, O'Connell D, Peinador Veiga D and Sergola M (2022). NS-NS spacetimes from amplitudes. Journal of High Energy Physics, Scuola Internazionale Superiore di Studi Avanzati (SISSA) 06-06-2022
2021
Godazgar H, Godazgar MM, Monteiro R, Peinador Veiga D and Pope CN (2021). Asymptotic Weyl Double Copy. The Journal of High Energy Physics, Springer Verlag (Germany) 17-11-2021
Geyer Y, Monteiro R and Stark-Muchão R (2021). Superstring Loop Amplitudes from the Field Theory Limit. Physical Review Letters, American Physical Society (APS) vol. 127 (21) 16-11-2021
Monteiro R, O’Connell D, Veiga DP and Sergola M (2021). Classical solutions and their double copy in split signature. Journal of High Energy Physics vol. 2021 (5), 268-268. 28-05-2021
Chacón E, García-Compeán H, Luna A, Monteiro R and White CD (2021). New heavenly double copies. Journal of High Energy Physics vol. 2021 (3) 26-03-2021
Godazgar H, Godazgar M, Monteiro R, Veiga DP and Pope CN (2021). Weyl Double Copy for Gravitational Waves. Physical Review Letters, American Physical Society (APS) vol. 126 (10) 11-03-2021
2020
Farrow JA, Geyer Y, Lipstein AE, Monteiro R and Stark-Muchão R (2020). Propagators, BCFW recursion and new scattering equations at one loop. Journal of High Energy Physics vol. 2020 (10), 74-74. 12-10-2020
Kim K, Lee K, Monteiro R, Nicholson I and Veiga DP (2020). The classical double copy of a point charge. Journal of High Energy Physics, Springer Science and Business Media LLC vol. 2020 (2) 07-02-2020
2019
Monteiro R, Geyer Y and Stark-Muchao R (2019). Two-loop scattering amplitudes: double-forward limit and colour-kinematics duality. The Journal of High Energy Physics, Springer Verlag (Germany) 05-12-2019
MONTEIRO RJF, Nicholson I and O'Connell D (2019). Spinor-helicity and the algebraic classification of higher-dimensional spacetimes. Classical and Quantum Gravity 19-02-2019
Luna A, MONTEIRO RJF, Nicholson I and O'Connell D (2019). Type D spacetimes and the Weyl double copy. Classical and Quantum Gravity 18-02-2019
2018
Geyer Y and MONTEIRO RJF (2018). Two-loop scattering amplitudes from ambitwistor strings: from genus two to the nodal Riemann sphere. Journal of High Energy Physics, Springer Verlag (Germany) 05-11-2018
MONTEIRO RJF and Geyer Y (2018). Gluons and gravitons at one loop from ambitwistor strings. Journal of High Energy Physics, Springer Verlag (Germany) 12-03-2018
2017
Adamo T, Monteiro R and Paulos MF (2017). Space-time CFTs from the Riemann sphere. Journal of High Energy Physics vol. 2017 (8) 18-08-2017
Luna A, Nicholson I, Ochirov A, O Connell D, Westerberg N, White CD and monteiro (2017). Perturbative spacetimes from Yang-Mills theory. Journal of High Energy Physics vol. 2017 (4) 01-04-2017
2016
Geyer Y, Mason L, Monteiro R and Tourkine P (2016). Two-loop scattering amplitudes from the Riemann sphere. Physical Review D vol. 94 (12) 01-12-2016
Luna A, Nicholson I, O’Connell D, White CD and monteiro (2016). The double copy: Bremsstrahlung and accelerating black holes. Journal of High Energy Physics vol. 2016 (6) 01-06-2016
Geyer Y, Mason L, Monteiro R and Tourkine P (2016). One-loop amplitudes on the Riemann sphere. Journal of High Energy Physics, Springer Nature vol. 2016 (3) 01-03-2016
He S, Monteiro R and Schlotterer O (2016). String-inspired BCJ numerators for one-loop MHV amplitudes. Journal of High Energy Physics, Springer Nature vol. 2016 (1) 01-01-2016
2015
Casali E, Geyer Y, Mason L, Monteiro R and Roehrig KA (2015). New ambitwistor string theories. Journal of High Energy Physics, Springer Nature vol. 2015 (11) 01-11-2015
Luna A, Monteiro R, O'Connell D and White CD (2015). The classical double copy for Taub–NUT spacetime. Physics Letters B, Elsevier vol. 750, 272-277. 01-11-2015
Geyer Y, Mason L, Monteiro R and Tourkine P (2015). Loop Integrands for Scattering Amplitudes from the Riemann Sphere. Physical Review Letters, American Physical Society (APS) vol. 115 (12) 16-09-2015
Monteiro R, O'Connell D and White CD (2015). Gravity as a double copy of gauge theory: from amplitudes to black holes. International Journal of Modern Physics D, World Scientific Publishing vol. 24 (09) 31-07-2015
2014
Monteiro R, O’Connell D and White CD (2014). Black holes and the double copy. Journal of High Energy Physics, Springer Nature vol. 2014 (12) 01-12-2014
Monteiro R and O’Connell D (2014). The kinematic algebras from the scattering equations. Journal of High Energy Physics, Springer Nature vol. 2014 (3) 01-03-2014
2013
Bjerrum-Bohr NEJ, Dennen T, Monteiro R and O’Connell D (2013). Integrand oxidation and one-loop colour-dual numerators in $$ \mathcal{N}=4 $$ gauge theory. Journal of High Energy Physics, Springer Nature vol. 2013 (7) 01-07-2013
Gath J, Hartong J, Monteiro R and Obers NA (2013). Holographic models for theories with hyperscaling violation. Journal of High Energy Physics, Springer Nature vol. 2013 (4) 01-04-2013
Boels RH, Isermann RS, Monteiro R and O’Connell D (2013). Colour-Kinematics duality for one-loop rational amplitudes. Journal of High Energy Physics, Springer Nature vol. 2013 (4) 01-04-2013
2012
Dias ÓJC, Figueras P, Minwalla S, Mitra P, Monteiro R and Santos JE (2012). Hairy black holes and solitons in global AdS5. Journal of High Energy Physics, Springer Nature vol. 2012 (8) 01-08-2012
Bjerrum-Bohr NEJ, Damgaard PH, Monteiro R and O’Connell D (2012). Algebras for amplitudes. Journal of High Energy Physics, Springer Nature vol. 2012 (6) 01-06-2012
2011
Dias ÓJC, Monteiro R and Santos JE (2011). Ultraspinning instability: the missing link. Journal of High Energy Physics, Springer Nature vol. 2011 (8) 01-08-2011
Monteiro R and O’Connell D (2011). The kinematic algebra from the self-dual sector. Journal of High Energy Physics, Springer Nature vol. 2011 (7) 01-07-2011
Caldarelli MM, Dias ÓJC, Monteiro R and Santos JE (2011). Black funnels and droplets in thermal equilibrium. Journal of High Energy Physics, Springer Nature vol. 2011 (5) 01-05-2011
2010
Dias ÓJC, Figueras P, Monteiro R and Santos JE (2010). Ultraspinning instability of anti-de Sitter black holes. Journal of High Energy Physics, Springer Nature vol. 2010 (12) 01-12-2010
Dias ÓJC, Figueras P, Monteiro R and Santos JE (2010). Ultraspinning instability of rotating black holes. Physical Review D, American Physical Society (APS) vol. 82 (10) 10-11-2010
Dias ÓJC, Monteiro R, Reall HS and Santos JE (2010). A scalar field condensation instability of rotating Anti-de Sitter black holes. Journal of High Energy Physics, Springer Nature vol. 2010 (11) 01-11-2010
Costa MS, Monteiro R, Santos JE and Zoakos D (2010). On three-point correlation functions in the gauge/gravity duality. Journal of High Energy Physics, Springer Nature vol. 2010 (11) 01-11-2010
Dias ÓJC, Figueras P, Monteiro R, Reall HS and Santos JE (2010). An instability of higher-dimensional rotating black holes. Journal of High Energy Physics, Springer Nature vol. 2010 (5) 01-05-2010
Monteiro R, Perry MJ and Santos JE (2010). Semiclassical instabilities of Kerr-anti-de Sitter black holes. Physical Review D, American Physical Society (APS) vol. 81 (2) 05-01-2010
2009
Dias ÓJC, Figueras P, Monteiro R, Santos JE and Emparan R (2009). Instability and new phases of higher-dimensional rotating black holes. Physical Review D, American Physical Society (APS) vol. 80 (11) 01-12-2009
Monteiro R, Perry MJ and Santos JE (2009). Thermodynamic instability of rotating black holes. Physical Review D, American Physical Society (APS) vol. 80 (2) 15-07-2009
Monteiro R and Santos JE (2009). Negative modes and the thermodynamics of Reissner-Nordström black holes. Physical Review D, American Physical Society (APS) vol. 79 (6) 06-03-2009
2005
Bertolami O and Monteiro R (2005). Varying electromagnetic coupling and primordial magnetic fields. Physical Review D, American Physical Society (APS) vol. 71 (12) 15-06-2005
Grants
Grants of specific relevance to the Centre for Fundamental PhysicsAmplitudes, Strings and Duality (CG 2022)Andreas Brandhuber, David Berman, Matthew Buican, Rodolfo Russo, David Vegh, Sanjaye Ramgoolam, Gabriele Travaglini, Christopher White, Bill Spence, Congkao Wen, Constantinos Papageorgakis, Ricardo Monteiro and Malcolm Perry
£1,477,966 Science & Technology Research Council (STFC) (01-10-2023 - 30-09-2026)
Scattering of Particles, Strings and Black Holes - URF renewalRicardo Monteiro
£389,975 Royal Society (14-10-2022 - 13-10-2025)
Scattering in Gauge Theory, Gravity and String Theory - Research Fellows Enhanced Research Expenses 2021Ricardo Monteiro
£50,718 Royal Society (01-10-2022 - 13-10-2025)
Workshop Twistor Theory and BeyondRicardo Monteiro
£5,322 EPSRC Engineering and Physical Sciences Research Council (25-02-2021 - 24-12-2021)
Amplitudes, Strings and DualityAndreas Brandhuber, Bill Spence, Rodolfo Russo, Sanjaye Ramgoolam, Matthew Buican, Michael Green, Steven Thomas, Steven Thomas, Gabriele Travaglini, Congkao Wen, Constantinos Papageorgakis, David Berman, Christopher White, David Vegh, Ricardo Monteiro and Malcolm Perry
£890,210 Science & Technology Research Council (STFC) (01-10-2020 - 31-03-2024)
From Gauge Theory to Gravity via the Double Copy - fellowship EnhancementRicardo Monteiro
£88,906 Royal Society (01-12-2017 - 30-09-2022)
Worldsheet Models of Quantum Field TheoriesRicardo Monteiro
£85,492 Royal Society (31-03-2017 - 30-09-2021)