(3+1)-DIMENSIONAL Expanding Universe from a Lorentzian Matrix Model for Superstring Theory in (9+1)-DIMENSIONS
Abstract
We study the Lorentzian version of the type IIB matrix model as a nonperturbative formulation of superstring theory in (9+1)-dimensions. Monte Carlo results show that not only space but also time emerges dynamically in this model. Furthermore, the real-time dynamics extracted from the matrices turns out to be remarkable: 3 out of 9 spatial directions start to expand at some critical time. This can be interpreted as the birth of our Universe.
- Publication:
-
International Journal of Modern Physics A
- Pub Date:
- February 2013
- DOI:
- arXiv:
- arXiv:1209.6386
- Bibcode:
- 2013IJMPA..2840002N
- Keywords:
-
- Superstring theory;
- matrix model;
- nonperturbative effects;
- 11.25.-w;
- 11.25.Sq;
- Strings and branes;
- Nonperturbative techniques;
- string field theory;
- High Energy Physics - Theory;
- General Relativity and Quantum Cosmology;
- High Energy Physics - Lattice
- E-Print:
- 12 pages, 6 figures, talk given at the conference "Progress in Quantum Field Theory and String Theory", Osaka, Japan, 3-7 April, 2012