Baby Universes and String Theory
Abstract
The description of 4D BPS black holes in terms of branes wrapped on various cycles in a Calabi-Yau space gives us the opportunity to study various issues in quantum gravity in a definite way by means of the worldvolume theory of the branes. In the particular example discussed here, there is a simple worldvolume description in terms of 2D Yang-Mills theory. The latter is an exactly solvable system of free fermions in one dimension. The exact answer for the free energy of this system can be written in a way that suggests an interpretation in terms of contributions from multiple (baby) universes.
- Publication:
-
International Journal of Modern Physics D
- Pub Date:
- 2006
- DOI:
- 10.1142/S0218271806008978
- Bibcode:
- 2006IJMPD..15.1581D
- Keywords:
-
- Baby universes;
- Hartle-Hawking;
- 2D Yang-Mills;
- topological string