I am a Royal Society Research Professor at the University of Sheffield. I work in algebraic geometry with a particular focus on homological methods and interactions with string theory. 


Publications

Fourier-Mukai transforms for elliptic surfaces, J. reine ang. math. 498, 115-133 (1998).

Equivalences of derived categories and Fourier-Mukai transforms, Bull. Lond. Math. Soc. 31, 1, 25-34 (1999).

with Antony Macioica, Fourier-Mukai transforms for quotient varieties, J. Geom. Phys. 122, 119-127 (1999).

with Antony Maciocia, Complex surfaces with equivalent derived categories, Math. Zeit. 236, 4, 677-697 (2001).

with Antony Maciocia, Fourier-Mukai transforms for K3 and elliptic fibrations, J. Alg. Geom. 11, 629-657 (2002).

with Alastair King and Miles Reid, The McKay correspondence as an equivalence of derived categories, J. Amer. Math. Soc. 14, 535-554 (2001).

Flops and derived categories, Invent. Math. 147, 613-632 (2002)

T-structures on some local Calabi-Yau varieties, J. of Algebra. 289, 453-483 (2005).

Stability conditions on a non-compact Calabi-Yau threefold, Comm. Math. Phys. 266, 3, 715-733 (2006).

with Srikanth Iyengar,  A criterion for regularity of local rings, C. R. Math. Acad. Sci. Paris 342, 10, 723-726 (2006).

Derived categories of coherent sheaves, International Congress of Math. vol. 2, 563-582 (2006).

Stability conditions on triangulated categories, Annals of Math. 166(2), 317-345 (2007).

Stability conditions on K3 surfaces, Duke Math. J. 141(2), 241-291 (2008).

Spaces of stability conditions, Algebraic geometry – Seattle 2005. Part 1, 1-21 (2009).

Stability conditions and Kleinian singularities, International Math. Research Notices, 21, 4142-4157 (2009).

Aspinwall, P et al., Dirichlet branes and mirror symmetry, Clay Math. Monographs,  x+681 pp.,  (2009).

with David Stern, Helices on del Pezzo surfaces and tilting Calabi-Yau algebras, Adv. Math. 224, 1672-1716 (2010).

Hall algebras and curve-counting invariants, J. Amer. Math. Soc. 24,  969-998 (2011).

An introduction to motivic Hall algebras, Adv. Math. 229(1), 102-138 (2012).

with Valerio Toledano Laredo, Stability conditions and Stokes factors, Invent. Math. 187(1), 61-98 (2012).

with Valerio Toledano Laredo, Stokes factors and multilogarithms, J. reine ang. math. 682, 89-128 (2012).

Quantum groups via Hall algebras of complexes, Annals of Maths. 177(2), 739-759 (2013).

wityh Ivan Smith, Quadratic differentials as stability conditions, Publ. Math. IHES. 121, 155-278 (2015).

with Arend Bayer, Derived automorphism groups of K3 surfaces of Picard number 1, Duke Math. J. 166(1), 75-124 (2017).

with Yu Qiu and Tom Sutherland, Stability conditions and the A2 quiver, Adv. Math. 365, 107049, 33 pp, (2020).

Hall algebras and Donaldson-Thomas invariants, Algebraic geometry: Salt Lake City 2015, Proc. Sympos. Pure Math. 75-100 (2018).

Scattering diagrams, Hall algebras and stability conditions, Algebr. Geom. 4(5), 523-561 (2017).

Riemann-Hilbert problems from Donaldson-Thomas theory, Invent. Math. 216(1), 69-124 (2019).

Riemann-Hilbert problems and the resolved conifold, J. Differential Geom. 115(3), 395-435 (2020).

with Dylan Allegretti, The monodromy of meromorphic projective structures, Trans. Amer. Math. Soc. 373(9), 6321-6367 (2020).

with Anna Barbieri and Jacopo Stoppa, A quantized Riemann-Hilbert problem in Donaldson-Thomas theory, Int. Math. Res. Notices, no. 5,  2022, 3417–3456 (2022).

withDavide Masoero, On the monodromy of the deformed cubic oscillator, 68 pages, arXiv:200610648 (2023)

Geometry from Donaldson-Thomas invariants, Integrability, quantization and geometry II, 1-66, Proc. Sympos. Pure Math. 103.2, Amer. Math. Soc (2021).

with Ian Strachan, Complex hyperkahler structures from Donaldson-Thomas invariants, Lett. Math. Phys. 111 no. 2, paper no. 54 (2021).

Joyce structures on spaces of quadratic differentials I, arxiv 2203.17148 (2022).