清华主页 EN
导航菜单

Gravity: bulk, boundary, corners

来源: 03-27

时间:Wed.,15:30-17:00, Mar.27, 2024

地点:B627, Shuangqing Complex Building A 清华大学双清综合楼A座 B627

主讲人:Alberto Cattaneo (University of Zurich)

Abstract

I will review four-dimensional gravity in the coframe-and-connection formulation (a.k.a. Palatini–Cartan formalism) and what it entails on boundaries (e.g., on Cauchy surfaces) and on corners (e.g., surfaces at infinity or surfaces around singularities in space). This full analysis will require the BV, the BFV and related formalisms and their interplay.


About the speaker

Alberto Cattaneo is a Professor at the Institute of Mathematics of the University of Zurich, Switzerland. He received his PhD at the University of Milan in 1995. He was a postdoc at Harvard University (1995-1997) and at the University of Milan (1997-1998). He then moved to the University of Zurich, Switzerland, as an Assistant Professor (1998-2003) and as a Full Professor (since 2003).

He was an invited speaker at the International Congress of Mathematicians in 2006. He has made major contributions to the study of perturbative TQFTs, to Poisson geometry and deformation quantization, and to the development of cohomological methods (BV, BFV) for quantum gauge theories with particular interest in boundary (and corner) structures.

返回顶部
相关文章
  • Classification of SPT/SET orders: boundary-bulk relation and higher categories

    AbstractIt is known that 2d (spatial dimension) symmetry protected topological (SPT) orders and symmetry enriched topological (SET) orders with finite onsite symmetries can be characterized by using the idea of gauging the symmetry and minimal modular extensions. In this talk, I will introduce another characterization of SPT/SET orders in all dimensions based on the boundary-bulk relation. In 1...

  • Complex saddles of three-dimensional de Sitter gravity via holography

    AbstractIt would be useful to deal with complex geometry when examining quantum gravity as in the case of no-boundary proposal by Hartle and Hawking. However, there would be too many saddles for complexified gravity, and it is necessary to determine which are allowable geometries in the sense of Witten. We consider three-ddimensional gravity theory with positive consmological constant described...