4 citations · 4 across the 1 of their papers we have counts for
4 papers
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…
Mirrors and Phases of N=4 in D=3
Zheng Yin
We review brane engineering of mirror pairs of 3d N=4 theories. It reveals aspects of 3d physics not known from previous field theoretic studies: novel QFT's without Lagrangian des…