366 citations · 1.2k across the 16 of their papers we have counts for
16 papers
Relative entropy dimensions for amenable group actions
Zubiao Xiao, Zhengyu Yin
We study the topological complexities of relative entropy zero extensions acted by countableinfinite amenable groups. Firstly, for a given Folner sequence , w…
Conformal invariance on orbifolds and excitations of singularity
Zheng Yin
We study conformal field theory on two-dimensional orbifolds and show this to be an effective way to analyze physical effects of geometric singularities with angular deficits. They…
The principle of least action and the geometric basis of D-branes
Zheng Yin
We analyze thoroughly the boundary conditions allowed in classical non-linear sigma models and derive from first principle the corresponding geometric objects, i.e. D-branes. In ad…
From Boundaries To Conditions Over Superspace
Zheng Yin
N=1 and 2 superconformal boundary conditions are shown to be the consequence of a boundary on the worldsheet superspace with positive codimension in the anticommuting subspace. In…
Families of N=2 Strings
Yeuk-Kwan E. Cheung, Yaron Oz, Zheng Yin
In a given 4d spacetime bakcground, one can often construct not one but a family of distinct N=2 string theories. This is due to the multiple ways N=2 superconformal algebra can be…
Non-Abelian Geometry
Keshav Dasgupta, Zheng Yin
Spatial noncommutativity is similar and can even be related to the non-Abelian nature of multiple D-branes. But they have so far seemed independent of each other. Reflecting this d…