Contents Online

# Advances in Theoretical and Mathematical Physics

## Volume 8 (2004)

### Number 5

### Parity Invariance For String In Twistor Space

Pages: 779 – 796

DOI: http://dx.doi.org/10.4310/ATMP.2004.v8.n5.a1

#### Author

#### Abstract

Topological string theory with twistor space as the target makes visible some otherwise dificult to see properties of perturbative Yang-Mills theory. But left-right symmetry, which is obvious in the standard formalism, is highly unclear from this point of view. Here we prove that tree diagrams computed from connected *D*-instanton configurations are parity-symmetric. The main point in the proof also works for loop diagrams.