- #1
Emilie.Jung
- 68
- 0
When I was studying complex manifolds in a Freedman's SUGRA book, I ran across this.
In a complex manifold, the metric is
$$ds^2=g_{ab}dz^adz^b\hspace{3cm}(1)$$$$ds^2=2g_{\alpha\bar{\beta}}dz^{\alpha}d\bar{z}^{\bar{\beta}}+g_{\alpha\beta}dz^{\alpha\beta}dz^{\alpha}dz^{\beta}+g_{\bar{\alpha}\bar{\beta}}d\bar{z}^{\bar{\alpha}}d\bar{z}^{\bar{\beta}}\hspace{3cm}(2)$$
It occurred in his introductory chapter which must have been there to build the ground for coming chapter which has to do with special geometry.
My question here is about the first term in (2), why does it have a "2" multiplied by ##g_{\alpha\bar{\beta}}dz^{\alpha}d\bar{z}^{\bar{\beta}}##? Is it because some two terms add giving this term. If so, what are those two terms and why do they add?
In a complex manifold, the metric is
$$ds^2=g_{ab}dz^adz^b\hspace{3cm}(1)$$$$ds^2=2g_{\alpha\bar{\beta}}dz^{\alpha}d\bar{z}^{\bar{\beta}}+g_{\alpha\beta}dz^{\alpha\beta}dz^{\alpha}dz^{\beta}+g_{\bar{\alpha}\bar{\beta}}d\bar{z}^{\bar{\alpha}}d\bar{z}^{\bar{\beta}}\hspace{3cm}(2)$$
It occurred in his introductory chapter which must have been there to build the ground for coming chapter which has to do with special geometry.
My question here is about the first term in (2), why does it have a "2" multiplied by ##g_{\alpha\bar{\beta}}dz^{\alpha}d\bar{z}^{\bar{\beta}}##? Is it because some two terms add giving this term. If so, what are those two terms and why do they add?