Dr Matthew Buican
Reader in Theoretical Physics
School of Physical and Chemical Sciences
Queen Mary University of London
Queen Mary University of London
Research
quantum field theory, conformal field theory, topological quantum field theory, quantum symmetries
Interests
• Various aspects of boundary conformal field theory (BCFT) and CFTs with defects, and topological quantum field theory. I have organized several workshops on these topics: a 2017 workshop at Chicheley Hall sponsored by the Royal Society, a 2019 workshop at the Perimeter Institute, a 2021 workshop at the MITP in Mainz, a 2023 workshop at Nordita, and I am organising a 3-month programme at Cambridge University's Isaac Newton Institute.• Topological quantum field theory (TQFT), quantum systems, and symmetries ; with Sanjaye Ramgoolam, I am organizing a journal club on these and related topics.
• Relations between TQFTs and CFTs
• Non-perturbative aspects of Superconformal Field Theories (SCFTs) and Supersymmetric Renormalization Group flows in various dimensions
• Topological quantum computation and quantum computation more generally. I am organizing a meeting a meeting at ICMS in Edinburgh on these topics this fall.
• Conformal manifolds and exactly marginal deformations of SCFTs
• Relations between conformal manifolds and moduli spaces of vacua
• Emergent / accidental symmetries in Quantum Field Theory (QFT)
• Hidden operator algebras in QFT
• Understanding topological and analytic properties of the space of QFTs
• New microscopic models for CFTs in various dimensions
• Hitchin Systems, M5 branes, and SCFTs in 3D and 4D
Publications
Publications of specific relevance to the Centre for Fundamental Physics2024
From Free Fields to Interacting SCFTs via Representation TheoryBUICAN M and Jiang H
Journal of High Energy Physics, Springer
29-08-2024
Invertibility of Condensation Defects and Symmetries of 2 + 1d QFTsBUICAN M and Radhakrishnan R
Communications in Mathematical Physics, Springer Editors: Schweigert C.
24-08-2024
Exact Operator Map from Strong Coupling to Free Fields: Beyond Seiberg-Witten TheoryBhargava C, Buican M and Jiang H
Physical Review Letters, American Physical Society (Aps) vol. 132 (3)
18-01-2024
2023
Non-Perturbative Explorations of Chiral Rings in 4d N=2 SCFTsBUICAN M and Banerjee A
Physical Review D, American Physical Society Editors: Wimmer R.
17-11-2023
Argyres-Douglas Avatars of Coulomb Branch PhysicsBUICAN M, Bhargava C and Jiang H
Journal of High Energy Physics, Springer
08-03-2023
Quantum Codes, CFTs, and DefectsBUICAN M, Radhakrishnan R and Dymarsky T
Journal of High Energy Physics, Springer
02-03-2023
2022
On the protected spectrum of the minimal Argyres-Douglas theoryBhargava C, Buican M and Jiang H
Journal of High Energy Physics, Springer Nature vol. 2022 (8)
11-08-2022
Spin thresholds, RG flows, and minimality in 4D N=2 QFTBuican M, Jiang H and Nishinaka T
Physical Review D, American Physical Society (Aps) vol. 105 (8)
15-04-2022
N=4 SYM, Argyres-Douglas Theories, and an Exact Graded Vector Space IsomorphismBUICAN M and Nishinaka T
Journal of High Energy Physics, Scuola Internazionale Superiore Di Studi Avanzati (Sissa) Editors: Rastelli L.
06-04-2022
Galois Orbits of TQFTs: Symmetries and UnitarityBUICAN M and Radhakrishnan R
Journal of High Energy Physics, Springer Editors: Komargodski Z.
03-01-2022
2021
1-Form Symmetry, Isolated N=2 SCFTs, and Calabi-Yau ThreefoldsBUICAN M and Jiang H
The Journal of High Energy Physics, Springer Verlag (Germany) Editors: Rastelli L.
06-12-2021
Non-abelian anyons and some cousins of the Arad–Herzog conjectureBuican M, Li L and Radhakrishnan R
Journal of Physics a: Mathematical and Theoretical, Iop Publishing vol. 54 (50)
25-11-2021
aXb=c in 2+1D TQFTBUICAN M, Radhakrishnan R and Li L
Quantum, Verein Zur FöRderung Des Open Access Publizierens in Den Quantenwissenschaften Editors: Beenakker C.
04-06-2021
2020
Galois Conjugation and Multiboundary Entanglement EntropyBUICAN M and Radhakrishnan R
The Journal of High Energy Physics, Springer Verlag (Germany) Editors: Komargodski Z.
07-12-2020
Boundary and defect CFT: Open problems and applicationsBUICAN M, Andrei N, Bissi A, Cardy J, Dorey P, Drukker N, Erdmenger J, Friedan D, Fursaev D, Konechny A, Kristjansen C, Makabe I, Nakayama Y, O'Bannon A, Parini R, Robinson B, Ryu S, Schmidt-Colinet C, Schomerus V, Schweigert C, et al.
Journal of Physics a: Mathematical and Theoretical, Iop Publishing Editors: Leeper N.
20-10-2020
Peculiar Index Relations, 2D TQFT, and Universality of SUSY EnhancementBUICAN M, Li L and Nishinaka T
The Journal of High Energy Physics, Springer Verlag (Germany) Editors: Schwimmer A.
29-01-2020
2019
Rationalizing CFTs and Anyonic Imprints on Higgs BranchesBUICAN MA and LACZKO Z
Journal of High Energy Physics, Springer Verlag (Germany)
05-03-2019
2018
Flowing from 16 to 32 SuperchargesBUICAN MA
Journal of High Energy Physics, Springer Verlag (Germany) Editors: komargodski Z.
29-10-2018
Nonunitary Lagrangians and unitary non-Lagrangian conformal field theoriesBUICAN MA and LACZKO Z
Physical Review Letters, American Physical Society
23-02-2018
2017
Anyonic Chains, Topological Defects, and Conformal Field TheoryBUICAN MA and Gromov A
Communications in Mathematical Physics, Springer Verlag Editors: Yin X.
05-10-2017
N=2 S-Duality RevisitedBUICAN MA, Laczko Z and Nishinaka T
Journal of High Energy Physics, Springer Verlag (Germany) Editors: Schwimmer A.
19-09-2017
On Irregular Singularity Wave Functions and Superconformal IndicesBUICAN MA and Nishinaka T
Journal of High Energy Physics, Springer Verlag (Germany) Editors: Schwimmer A.
15-09-2017
2016
Small deformation of a simple N=2 superconformal theoryBuican M and Nishinaka T
Physical Review D, American Physical Society (Aps) vol. 94 (12)
01-12-2016
Aspects of superconformal multiplets in D > 4Buican M, Hayling J and Papageorgakis C
Journal of High Energy Physics vol. 2016 (11)
01-11-2016
Conformal manifolds in four dimensions and chiral algebrasBUICAN MA and Nishinaka T
Journal of Physics a: Mathematical and Theoretical, Iop Publishing: Hybrid Open Access Editors: Whitehouse S.
21-10-2016
Argyres-Douglas theories, the Macdonald index, and an RG inequalityBUICAN MA and Nishinaka T
Journal of High Energy Physics, Springer
24-02-2016
2015
Argyres–Douglas theories, S 1 reductions, and topological symmetriesBuican M and Nishinaka T
Journal of Physics a: Mathematical and Theoretical vol. 49 (4), 045401-045401.
21-12-2015
On the superconformal index of Argyres–Douglas theoriesBuican M and Nishinaka T
Journal of Physics a: Mathematical and Theoretical vol. 49 (1), 015401-015401.
04-12-2015
Compact conformal manifoldsBuican M and Nishinaka T
Journal of High Energy Physics vol. 2015 (1)
21-01-2015
Argyres-Douglas theories and S-dualityBuican M, Giacomelli S, Nishinaka T and Papageorgakis C
Journal of High Energy Physics vol. 2015 (2), 1-40.
01-01-2015
2014
Constraints on chiral operators in N=2 SCFTsBuican M, Nishinaka T and Papageorgakis C
Journal of High Energy Physics vol. 2014 (12)
01-12-2014
Non-perturbative constraints on light sparticles from properties of the RG flowBuican M
Journal of High Energy Physics vol. 2014 (10)
06-10-2014
2012
A conjectured bound on accidental symmetriesBuican M
Physical Review D, American Physical Society (Aps) vol. 85 (2)
15-01-2012
2011
Mapping anomalous currents in supersymmetric dualitiesAbel S, Buican M and Komargodski Z
Physical Review D, American Physical Society (Aps) vol. 84 (4)
03-08-2011
On R-symmetric Fixed Points and SuperconformalityAntoniadis I and Buican M
Physical Review D, American Physical Society (Aps) vol. 83 (10)
15-05-2011
Goldstinos, supercurrents and metastable SUSY breaking in supersymmetric gauge theoriesAntoniadis I and Buican M
Journal of High Energy Physics, Springer Nature vol. 2011 (4)
01-04-2011
2010
Soft terms from broken symmetriesBuican M and Komargodski Z
Journal of High Energy Physics, Springer Nature vol. 2010 (2)
01-02-2010
2009
Exploring general gauge mediationBuican M, Meade P, Seiberg N and Shih D
Journal of High Energy Physics, Springer Nature vol. 2009 (03)
03-03-2009
2008
SUSY breaking mediation by D-brane instantonsBuican M and Franco S
Journal of High Energy Physics, Springer Nature vol. 2008 (12)
09-12-2008
On the geometry of metastable supersymmetry breakingBuican M, Malyshev D and Verlinde H
Journal of High Energy Physics, Springer Nature vol. 2008 (06), 108-108.
30-06-2008
2007
D-branes at singularities, compactification, and hyperchargeBuican M, Malyshev D, Morrison DR, Verlinde H and Wijnholt M
Journal of High Energy Physics, Springer Nature vol. 2007 (01)
31-01-2007
2003
QCD explanation of oscillating hadron and jet multiplicity momentsBuican MA, Förster C and Ochs W
European Physical Journal C, Springer Nature vol. 31 (1), 57-71.
01-10-2003
Angular distribution of particle flows and perturbative QCD predictionsBuican MA, Khoze VA and Ochs W
European Physical Journal C, Springer Nature vol. 28 (3), 313-319.
01-06-2003
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
Relations, Transformations, and Emergence in Quantum Field Theory- URF fellowship renewal Matthew BuicanMatthew Buican
£404,697 Royal Society
01-01-2021 - 05-07-2024
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
New Aspects of Conformal and Topological Field Theories Across DimensionsMatthew Buican
£103,067 Royal Society
01-12-2017 - 05-07-2024