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
BUICAN M and Jiang H (2024). From Free Fields to Interacting SCFTs via Representation Theory. Journal of High Energy Physics, Springer 29-08-2024
BUICAN M and Radhakrishnan R (2024). Invertibility of Condensation Defects and Symmetries of 2 + 1d QFTs., Editors: Schweigert C. Communications in Mathematical Physics, Springer 24-08-2024
Bhargava C, Buican M and Jiang H (2024). Exact Operator Map from Strong Coupling to Free Fields: Beyond Seiberg-Witten Theory. Physical Review Letters, American Physical Society (APS) vol. 132 (3) 18-01-2024
2023
BUICAN M and Banerjee A (2023). Non-Perturbative Explorations of Chiral Rings in 4d N=2 SCFTs., Editors: Wimmer R. Physical Review D, American Physical Society 17-11-2023
BUICAN M, Bhargava C and Jiang H (2023). Argyres-Douglas Avatars of Coulomb Branch Physics. Journal of High Energy Physics, Springer 08-03-2023
BUICAN M, Radhakrishnan R and Dymarsky T (2023). Quantum Codes, CFTs, and Defects. Journal of High Energy Physics, Springer 02-03-2023
2022
Bhargava C, Buican M and Jiang H (2022). On the protected spectrum of the minimal Argyres-Douglas theory. Journal of High Energy Physics, Springer Nature vol. 2022 (8) 11-08-2022
Buican M, Jiang H and Nishinaka T (2022). Spin thresholds, RG flows, and minimality in 4D N=2 QFT. Physical Review D, American Physical Society (APS) vol. 105 (8) 15-04-2022
BUICAN M and Nishinaka T (2022). N=4 SYM, Argyres-Douglas Theories, and an Exact Graded Vector Space Isomorphism., Editors: Rastelli L. Journal of High Energy Physics, Scuola Internazionale Superiore di Studi Avanzati (SISSA) 06-04-2022
BUICAN M and Radhakrishnan R (2022). Galois Orbits of TQFTs: Symmetries and Unitarity., Editors: Komargodski Z. Journal of High Energy Physics, Springer 03-01-2022
2021
BUICAN M and Jiang H (2021). 1-Form Symmetry, Isolated N=2 SCFTs, and Calabi-Yau Threefolds., Editors: Rastelli L. The Journal of High Energy Physics, Springer Verlag (Germany) 06-12-2021
Buican M, Li L and Radhakrishnan R (2021). Non-abelian anyons and some cousins of the Arad–Herzog conjecture. Journal of Physics A: Mathematical and Theoretical, IOP Publishing vol. 54 (50) 25-11-2021
BUICAN M, Radhakrishnan R and Li L (2021). aXb=c in 2+1D TQFT., Editors: Beenakker C. Quantum, Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften 04-06-2021
2020
BUICAN M and Radhakrishnan R (2020). Galois Conjugation and Multiboundary Entanglement Entropy., Editors: Komargodski Z. The Journal of High Energy Physics, Springer Verlag (Germany) 07-12-2020
BUICAN 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. (2020). Boundary and defect CFT: Open problems and applications., Editors: Leeper N. Journal of Physics A: Mathematical and Theoretical, IOP Publishing 20-10-2020
BUICAN M, Li L and Nishinaka T (2020). Peculiar Index Relations, 2D TQFT, and Universality of SUSY Enhancement., Editors: Schwimmer A. The Journal of High Energy Physics, Springer Verlag (Germany) 29-01-2020
2019
BUICAN MA and LACZKO Z (2019). Rationalizing CFTs and Anyonic Imprints on Higgs Branches. Journal of High Energy Physics, Springer Verlag (Germany) 05-03-2019
2018
BUICAN MA (2018). Flowing from 16 to 32 Supercharges., Editors: komargodski Z. Journal of High Energy Physics, Springer Verlag (Germany) 29-10-2018
BUICAN MA and LACZKO Z (2018). Nonunitary Lagrangians and unitary non-Lagrangian conformal field theories. Physical Review Letters, American Physical Society 23-02-2018
2017
BUICAN MA and Gromov A (2017). Anyonic Chains, Topological Defects, and Conformal Field Theory., Editors: Yin X. Communications in Mathematical Physics, Springer Verlag 05-10-2017
BUICAN MA, Laczko Z and Nishinaka T (2017). N=2 S-Duality Revisited., Editors: Schwimmer A. Journal of High Energy Physics, Springer Verlag (Germany) 19-09-2017
BUICAN MA and Nishinaka T (2017). On Irregular Singularity Wave Functions and Superconformal Indices., Editors: Schwimmer A. Journal of High Energy Physics, Springer Verlag (Germany) 15-09-2017
2016
Buican M and Nishinaka T (2016). Small deformation of a simple N=2 superconformal theory. Physical Review D, American Physical Society (APS) vol. 94 (12) 01-12-2016
Buican M, Hayling J and Papageorgakis C (2016). Aspects of superconformal multiplets in D > 4. Journal of High Energy Physics vol. 2016 (11) 01-11-2016
BUICAN MA and Nishinaka T (2016). Conformal manifolds in four dimensions and chiral algebras., Editors: Whitehouse S. Journal of Physics A: Mathematical and Theoretical, IOP Publishing: Hybrid Open Access 21-10-2016
BUICAN MA and Nishinaka T (2016). Argyres-Douglas theories, the Macdonald index, and an RG inequality. Journal of High Energy Physics, Springer 24-02-2016
2015
Buican M and Nishinaka T (2015). Argyres–Douglas theories, S 1 reductions, and topological symmetries. Journal of Physics A: Mathematical and Theoretical vol. 49 (4), 045401-045401. 21-12-2015
Buican M and Nishinaka T (2015). On the superconformal index of Argyres–Douglas theories. Journal of Physics A: Mathematical and Theoretical vol. 49 (1), 015401-015401. 04-12-2015
Buican M and Nishinaka T (2015). Compact conformal manifolds. Journal of High Energy Physics vol. 2015 (1) 21-01-2015
Buican M, Giacomelli S, Nishinaka T and Papageorgakis C (2015). Argyres-Douglas theories and S-duality. Journal of High Energy Physics vol. 2015 (2), 1-40. 01-01-2015
2014
Buican M, Nishinaka T and Papageorgakis C (2014). Constraints on chiral operators in N=2 SCFTs. Journal of High Energy Physics vol. 2014 (12) 01-12-2014
Buican M (2014). Non-perturbative constraints on light sparticles from properties of the RG flow. Journal of High Energy Physics vol. 2014 (10) 06-10-2014
Buican M (2014). Minimal distances between SCFTs. Journal of High Energy Physics vol. 2014 (1) 28-01-2014
2012
Buican M (2012). A conjectured bound on accidental symmetries. Physical Review D, American Physical Society (APS) vol. 85 (2) 15-01-2012
2011
Abel S, Buican M and Komargodski Z (2011). Mapping anomalous currents in supersymmetric dualities. Physical Review D, American Physical Society (APS) vol. 84 (4) 03-08-2011
Antoniadis I and Buican M (2011). On R-symmetric Fixed Points and Superconformality. Physical Review D, American Physical Society (APS) vol. 83 (10) 15-05-2011
Antoniadis I and Buican M (2011). Goldstinos, supercurrents and metastable SUSY breaking in supersymmetric gauge theories. Journal of High Energy Physics, Springer Nature vol. 2011 (4) 01-04-2011
2010
Buican M and Komargodski Z (2010). Soft terms from broken symmetries. Journal of High Energy Physics, Springer Nature vol. 2010 (2) 01-02-2010
2009
Buican M, Meade P, Seiberg N and Shih D (2009). Exploring general gauge mediation. Journal of High Energy Physics, Springer Nature vol. 2009 (03) 03-03-2009
2008
Buican M and Franco S (2008). SUSY breaking mediation by D-brane instantons. Journal of High Energy Physics, Springer Nature vol. 2008 (12) 09-12-2008
Buican M, Malyshev D and Verlinde H (2008). On the geometry of metastable supersymmetry breaking. Journal of High Energy Physics, Springer Nature vol. 2008 (06), 108-108. 30-06-2008
2007
Buican M, Malyshev D, Morrison DR, Verlinde H and Wijnholt M (2007). D-branes at singularities, compactification, and hypercharge. Journal of High Energy Physics, Springer Nature vol. 2007 (01) 31-01-2007
2003
Buican MA, Förster C and Ochs W (2003). QCD explanation of oscillating hadron and jet multiplicity moments. European Physical Journal C, Springer Nature vol. 31 (1), 57-71. 01-10-2003
Buican MA, Khoze VA and Ochs W (2003). Angular distribution of particle flows and perturbative QCD predictions. 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)