I work in the field of mathematical physics and am interested in algebraic and geometric aspects of quantum field theory and string theory.

Expositions

Publications

Preprints

Invited talks

  • June 20-24, 2022: Online Workshop on Topology and QFT. University of Notre dame.
  • Mar 30, 2022: Joint Harvard-CUHK-YMSC Differential Geometry Seminar.
  • Mar 22-25, 2022: “Geometry, Representation Theory and Quantum Fields”, Osaka City University.
  • Nov 22–Dec 03 2021: String and M-Theory: The New Geometry of the 21st Century – II, NUS, Singapore.
  • Nov 22-26, 2021: Higher structures in geometry and physics, Chern Institute of Mathematics, Nankai University
  • August 2-7, 2021: International Congress on Mathematical Physics (ICMP) 2021 (session Quantum Field Theory), Geneva, Switzerland.
  • June 14-18, 2021: String-Math 2021 (Plenary talk), IMPA, Rio de Janeiro, Brazil.
  • May 14, 2021: TQFT Seminar, Instituto Superior Técnico, Lisbon, Portugal.
  • May 12, 2021: Hodge Seminar, Edinburgh Hodge Institute, Scotland.
  • May 3, 2021: Online Geometry and Physics Seminar, IASM at Zhejiang University, China.
  • Dec 27, 2020: ICCM Annual Meeting, USTC, China.
  • Oct 30, 2020: Wu Wen-ts\"{u}n Lab Lecture, USTC, China.
  • Sep 20, 2020: ``The 3rd Conference on Operad Theory and Related Topics", Jilin University, China.
  • Apr 17, 2020: Zoom Mathematical Physics Seminar, Tsinghua University, China.
  • Dec 11 , 2019: Colloquium, Columbia University, USA.
  • Dec 9, 2019: Workshop on Symplectic Geometry, NCG and Mathematical Physics, Washington University in St. Louis, USA.
  • Dec 2, 2019: Geometry, Symmetry and Physics Seminar, Yale, USA.
  • Nov 25, 2019: Geometry and Topology Seminar, UC Irvine, USA.
  • Nov 21, 2019: Geometry, Physics and Representation Theory Seminar, Northeastern, USA.
  • Nov 15, 2019: High Energy Theory Seminar Seminar, IAS, USA.
  • Nov 8, 2019: Lie Group/Quantum Mathematics Seminar, Rutgers, USA.
  • Oct 8, 2019: Colloquium, Rutgers- Newark, USA.
  • June 17-28, 2019: Lectures at summer workshop ``QFT for Mathematicians", Perimeter Institute, Canada.
  • June 14, 2019: “The mathematical foundations of conformal field theory and related topics” in honor of Yi-Zhi Huang's 60th birthday., Nankai University, Tianjin, China.
  • June 13, 2019: The 8th International Congress of Chinese Mathematicians (Plenary talk), Beijing, China.
  • May 6-11, 2019: Deformation theory and homotopy algebras, Emei, China.
  • Apr 24 and Apr 26, 2019: Mathematical Physics Seminar and GAP Seminar, USTC, China.
  • Feb 17-24, 2019: BIRS Workshop on Quantum Field Theory and Factorization Algebras, Banff, Canada.
  • January 25-27, 2019: Workshop on Modular structures in Gromov-Witten theory and related topics , University of Michigan, USA.
  • Feb 14, 2019: Geometry Seminar, University of Oregon, USA.
  • Jan 14-18, 2019: Between Topology and Quantum Field Theory in celebration of Dan Freed's 60th birthday, University of Texas at Austin, USA.
  • Dec 10-14, 2018: Workshop on String and M-theory: the new geometry of the 21 century, IMS at NUS, Singapore.
  • Nov 24-26, 2018: Mini-Workshop on Hochschild Cohomology and Related Topics III, East China Normal University, China.
  • Nov 16, 2018: Colloquium at IMS, Shanghaitech University, China.
  • July 18-22, 2018: String-Math 2018 (Plenary talk), Tohoku University, Japan.
  • May 10, 2018: 2018 Higher Structures and Symplectic Geometry, Tsinghua University, China.
  • Feb 8, 2018: Workshop on Factorisation Homology, Factorisation Algebras and the Cobordism Hypothesis, Saint-Etienne de Tinee, France.
  • Jan 29, 2018: Higher differential geometry seminar, MPIM, Bonn, Germany.
  • Jan 10-13, 2018: Simons Collaboration Workshop on Homological Mirror Symmetry, Harvard, USA.
  • Dec 7, 2017: Geometry Seminar, CNU, Beijing.
  • Nov 16-19, 2017: Gromov-Witten invariants and integrable hierarchies, USTC, China.
  • Nov 26, 2017: Wu Wen-tsun Lab Lecture, USTC, China.
  • Oct 30-Nov 4, 2017: East Asia Symplectic Conference 2017, Chengdu, China.
  • July 31-Aug 11, 2017: Geoquant 2017, Aarhus, Danmark.
  • July 24-29, 2017: String-Math 2017 (Parallel talk), Hamburg, Germany.
  • July 20-22, 2017: Flat connections in physics and geometry, Heidelberg, Germany.
  • July 3-7, 2017: Symposium in Geometry and Differential Equations, Beijing, China.
  • June 8, 2017: ICTS seminar, USTC, Hefei, China.
  • May 22-26, 2017: Homological mirror symmetry and higher genus invariants, Simons Center for Geometry and Physics, USA.
  • May 8-12, 2017: Quantum fields on manifolds with boundary and the BV formalism, Perimeter Institute, Canada.
  • Apr 28-May 1, 2017: JDG conference on geometry and topology, Harvard, USA.
  • Apr 25-28, 2017: Developments of mathematics at IPMU: in honor of Kyoji Saito, Kavli IPMU, Japan.
  • Apr 17-24, 2017: Gauge Equations, Geometry and Strings, ICMAT, Madrid, Spain.
  • Mar 13-17, 2017: Workshop on homological mirror symmetry, IAS, Princeton, USA.
  • Feb 6, 2017: Geometry and Physics seminar, IBS-CGP, Korea.
  • Jan 19, 2017: Ganita seminar, University of Toronto, Canada.
  • Jan 18, 2017: Mathematical Physics seminar, Perimeter Institute for theoretical physics, Canada.
  • Oct 31-Nov 4, 2016: BICMR/IBS-CGP joint Symplectic Geometry Workshop, Jeju, Korea.
  • Aug 6-11, 2016: The 7th International Congress of Chinese Mathematicians (Plenary talk), Beijing, China.
  • Aug 1-5, 2016: Strings 2016 (Parallel talk), Beijing, China.
  • June 20-26, 2016: Retrospective Workshop for the Thematic Program on Calabi-Yau Varieties: Arithmetic, Geometry and Physics, Herstmonceux Castle, UK
  • May 8-14, 2016: Lecture series for ``Factorization Algebras and Functorial Field Theories", MFO, Germany.
  • May 6-8, 2016: Simons Workshop on SYZ Mirror Symmetry and related topics, Harvard, USA.
  • Apr 24-30, 2016: Mini course on ``BV quantization and geometric applications", IBS-CGP, Korea.
  • Apr 5-12, 2016: MIST IV: Mathematics Inspired by String Theory, CUHK, Hong Kong.
  • Jan 1-4, 2016: Workshop on Poisson Geometry and Mathematical Physics, Chern Institute of Mathematics, Tianjin.
  • Dec 31, 2015: Strings-Math 2015 (Plenary talk), Sanya, China.
  • Dec 27, 2015: Workshop on Mathematics Physics, Dec 27, Sanya, China.
  • Nov 24, 2015: 2015 Annual Conference of Chinese Mathematical Society, CNU, Beijing.
  • Nov 14, 2015: Geometry and Physics seminar, Shanghai Jiaotong University, Shanghai
  • July 13-July 18,, 2015: ``Uniformization, Riemann-Hilbert Correspondence, Calabi-Yau manifold, and Picard-Fuchs Equation", Mittag-Leffler Institute, Sweden
  • July 6-10, 2015: GAP XII-Derived Algebraic Geometry, IBS-CGP, Pohang, Korea
  • March 28, 2015: Tianyuan workshop in algebraic geometry, AMSS, Beijing.
  • March 23, 2015: Symplectic Geometry and Mathematical Physics, Peking University
  • March 7, 2015: Beijing Geometry and Physics Colloquium, Peking University
  • Feb 7, 8, 2015: Lectures: Introduction to perturbative field theory, Morningside Center for Mathematics, CAS, Beijing.
  • Jan 20, 2015: String/Math seminar, Perimeter Institute for theoretical physics, Canada.
  • Oct 20, 2014: Geometry seminar, Lehigh University, USA.
  • Oct 6, 2014: Informal mathematical physics seminar, Columbia University, USA.
  • Sep 29-Aug 3, 2014: Homological methods in quantum field theory, Simons center for geometry and physics, USA.
  • Sep 18, 2014: Seminar on mathematical physics, Morningside Center for Mathematics, CAS, Beijing.
  • Aug 26, 2014: China annual complex analysis conference, USTC
  • Aug 5, 2014: 60 years of Calabi conjecture-Workshop in Honor of Professor Shing-Tung Yau on the occasion of his 65th birthday, Tsinghua University
  • June 8-15, 2014: Lecturer for Research Training Group 1670, University of Hamburg, Germany \item May 19-23, 2014: Representation Theory, Integrable Systems, and Quantum Fields, Northwestern University, USA
  • April 1, 2014: Algebraic geometry seminar, Princeton, USA
  • Mar 3-7, 2014: Workshop on B-model aspect of Gromov-Witten theory, University of Michigan
  • Feb 10-14, 2014: Lecturer: Primitive forms and related subjects, Kavli IPMU, Japan
  • Nov 25, 2013: Geometry and Physics seminar, University of Michigan, USA
  • July 22, 2013: Invited seminar, Kavli IPMU, Japan
  • July 16, 2013: The Sixth International Congress of Chinese Mathematicians, Taipei
  • Apr 12-14, 2013: Mini-course for FRG Workshop on Gromov-Witten theory, Columbia University, USA
  • Mar 11, 2013: Geometry and Physics seminar, University of Michigan, USA
  • Jan 29, 2013: Differential geometry seminar, Harvard University, USA
  • Nov 30, 2012: Everytopic Seminar, Brandeis University, USA
  • Nov 27, 2012: GAP Seminar, Penn State University, USA
  • Sep 14-17, 2012: Boston-Keio Summer Workshop on Geometry, Boston University, USA
  • Aug 27, 2012: FRG Workshop: Generalized Geometry, String Theory, and Deformations, Harvard University, USA
  • August 20-24, 2012: The Conference of Mirror Symmetry and Related Topics, KMUST, China
  • July 27-Aug 20, 2012: Summer course, MSC at Tsinghua University, China
  • August 10, 2012: Math Literature Seminar, MSC at Tsinghua University, China
  • July 18, 2012: Workshop on the mathematical aspects of quantum field theory, USTC, China
  • June 26, 2012: Geometry and Physics of the Landau-Ginzburg Model, IPMU, Japan
  • June 18, 2012: Quantization and Mathematics: An Undergraduate Conference, Northwestern University, USA
  • Mar 19, 2012: Geometry and Physics Seminar, University of Michigan, USA
  • Feb 18, 2012: Hong Kong Geometry Colloquium, Hong Kong
  • Feb 17,20, 2012: Geometry and Physics Seminar, HK Chinese Univ, Hong Kong
  • Feb 8,11, 2012: Geometry Seminar, HKUST, Hong Kong
  • Dec 9, 2011: Geometry Seminar, Boston University, USA
  • Nov 3, 2011: Felix Klein Seminar, University of Notre Dame, USA
  • Aug 3, 2011: Workshop on Chiral Differential Operators, Northwestern University, USA
  • July 19, 2011: Seminar on QFT, MIT, US
  • May 5, 2011: Mirror Symmetry Seminar, Simons Center for Geometry And Physics, Stonybrook
  • Mar 4, 2011: Algebraic Geometry Seminar, University of Wisconsin, USA
  • Feb 22, 2011: Differential Geometry Seminar, Harvard University, USA
  • Oct 14, 2010: Geometry/Physics Seminar, Northwestern University, USA
  • Sep 28, 2010: Differential Geometry Seminar, Harvard University, USA
  • Dec 4 2009: Differential Geometry Seminar, Harvard University, USA
  • Mar 12, 2009: Graduate Trivial Notion Seminar, Harvard University, USA
  • Apr 24, 2008: Graduate Trivial Notion Seminar, Harvard University, USA