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Collaboration Postdocs

Shih-Kai Chiu (Oxford)


Shih-Kai Chiu obtained his PhD from the University of Notre Dame in 2021, under the supervision of Gábor Székelyhidi. During his PhD he has worked on complete noncompact Calabi-Yau manifolds with maximal volume growth. He joined the collaboration in October 2021 as Postdoctoral Research Associate at the University of Oxford.

Guido Franchetti (Bath)


Guido Franchetti obtained his PhD from the University of Cambridge in 2014. He has held postdoctoral positions at Heriot-Watt University, Leibniz University and the University of Turin. His research areas include gauge theory and cohomogeneity one G2 manifolds. Guido joined the collaboration in February 2021 as a postdoctoral fellow at the University of Bath.

Julius Grimminger Oxford)


Julius Grimminger obtained his PhD from Imperial College London in 2023 under the supervision of Amihay Hanany. His research interests are supersymmetric quantum field theories, their constructions in string theory, and the geometry of their moduli spaces. He is particularly interested in symplectic singularities, and their non-normal or non-reduced generalisations.

Saman Habibi Esfahani (Duke)


Saman Habibi Esfahani joined the collaboration in 2021 as a PhD student at Stony Brook University under the supervision of Simon Donaldson. In his PhD thesis, he studied compactness and gluing problems for monopoles, Fueter sections, and calibrated submanifolds. In 2022, he became a Berlekamp Endowed Postdoctoral Fellow at MSRI, Visiting Scholar at UC Berkeley, and (subsequently) William W. Elliott Assistant Research Professor at Duke University.

Thorsten Hertl (Freiburg)


Thorsten Hertl obtained his PhD from University of Göttingen in 2022 under the supervision of Thomas Schick and Wolfgang Steimle. His research interests focus on moduli spaces of various geometric structures like positive scalar curvature metrics or G2 manifolds. Thorsten joined the collaboration in October 2022 as a postdoctoral researcher at the University of Freiburg.

Max Hübner (University of Pennsylvania)

Max Hübner obtained his PhD from the University of Oxford in 2021 under the supervision of Sakura Schäfer-Nameki. His current research concentrates on supersymmetric quantum field theories, their defects and geometrification in string and M-theory, with particular interest in G2 and M5 brane physics. Max joined the collaboration in September 2021 as a postdoctoral scholar affiliated with the Physics Department at the University of Pennsylvania.

Ilyas Khan (Oxford)

Ilyas Khan obtained his PhD from the University of Wisconsin-Madison in 2021 under the supervision of Bing Wang and Sigurd Angenent. His research focuses on singularity formation in geometric flows, with particular emphasis on Lagrangian mean curvature flow. Ilyas joined the collaboration in September 2021 as a Postdoctoral Research Associate at the University of Oxford.

Fabian Lehmann (Stony Brook)


Fabian Lehmann obtained his Ph.D. from University College London in 2020, under the supervision of Mark Haskins and Jason Lotay. During his Ph.D. he has worked on cohomogeneity one Spin(7) holonomy manifolds and the deformation theory of asymptotically conical Spin(7)-metrics. He joined the collaboration in November 2020 as Research Assistant Professor at the Simons Center for Geometry and Physics.

Henry Liu (Oxford)


Henry Liu obtained his PhD from Columbia University in 2021 under the
supervision of Andrei Okounkov. His work focuses on various moduli of
sheaves, especially on surfaces or 3-folds (e.g. Donaldson-Thomas
theory), and their enumerative invariants and quantum symmetries.
Henry joined the collaboration in Sept 2021 as a Postdoctoral Research
Associate in Geometry at the University of Oxford.

Alec Payne (Duke)


Alec Payne obtained his PhD from New York University in 2021 under the supervision of Bruce Kleiner. His research focuses on geometric flows and their applications, with a particular interest in the Laplacian flow of closed G2-structures. Alec joined the collaboration in August 2021 as a Griffiths Assistant Research Professor at Duke University.

Daniel Platt (King’s College London)


Daniel Platt studied for his PhD under the supervision of Jason Lotay and Simon Donaldson. His research interests lie in geometric analysis on special holonomy manifolds, in particular instantons and calibrated submanifolds. He joins the collaboration in November 2021 as a research assistant at King’s College London.

Evyatar Sabag (Oxford)


Evyatar Sabag obtained his PhD from The Technion institute in 2021 under the supervision of Shlomo S. Razamat. During his PhD he has worked on geometric constructions of gauge theories displaying dualities and symmetry enhancement by compactifying six dimensional SCFTs on a Riemann surface. Evyatar joined the collaboration in October 2021 as a postdoctoral research associate at the University of Oxford, in the Mathematical Physics group.

Ragini Singhal (King’s College London)


Ragini Singhal obtained her PhD from University of Waterloo in 2021 under the supervision of Benoit Charbonneau and Spiro Karigiannis. Her research focuses on manifolds with special geometric structures and gauge theory. Ragini joined the collaboration in November 2021 as Postdoctoral Research Associate at King’s College London.

Jiahua Tian (ICTP)


Jiahua Tian obtained his Ph.D. from Northeastern University in 2020 under the supervision of James Halverson. His research focuses on various formal aspects of M/F-theory compactification and its vast array of low energy effective theories, and (semi-)realistic model building from string compactifications. He joins the collaboration in September 2020 as a postdoctoral fellow at ICTP.

Jingxiang Wu (Oxford)


Jingxiang Wu obtained his Ph.D from Perimeter Institute and the University of Waterloo, under the supervision of Davide Gaiotto. His research areas include integrable systems and defects in quantum field theories, with a particular interest in the affine oper/Gaudin correspondence and four dimension Chern Simons theory. He joined the collaboration in August 2021 as a postdoctoral research associate at the University of Oxford, in the Mathematical Physics group.