學術活動
            理論物理
            Effective gravitational couplings of four-dimensional N=2 supersymmetric gauge theories
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            主講人: Dr. Xinyu Zhang (Rutgers University, US)
            地點: 物理樓南408
            時間: 2020年01月03日,周五,下午15:00

            The low energy effective couplings of four-dimensional N = 2 supersymmetric gauge theory to topological invariants of the background gravitational field play an important role in the study of topology of four-manifolds, in the computation of central charges of N = 2 superconformal theories, and in the study of M5-branes in string theory. In this talk, I will review the historical developments and previous conjectures, and then I will show how to determine these effective gravitational couplings from a first-principle calculation. This talk is based on my joint work with Jan Manschot and Gregory Moore.

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