Maths HEP Lunchtime Seminars: M-theory Conifolds
24 May 2002 00:00 in CM221
"We describe recent developments in the construction of 7-dimensional metrics of G_2 holonomy, which can provide new insights into the nature of the conifold transition in string theory. The metric on a compact Calabi-Yau 6-manifold that is developing a singularity can be approximated by the smoothed-out deformations of the conifold metric. There are two smooth metrics, called the deformed conifold and the resolved conifold. These can arise in Gromov-Hausdorff limits of smooth G_2 metrics, in which the 7-metric splits off a circle of infinitesimal radius. This provides a way of relating the deformed and resolved conifolds via G_2 reductions of M-theory."