Brane World Generated Dynamically from String Type IIB Matrices

Jun Nishimura; Graziano Vernizzi

doi:10.1103/PhysRevLett.85.4664

Brane World Generated Dynamically from String Type IIB Matrices

Jun Nishimura and Graziano Vernizzi

Phys. Rev. Lett. 85, 4664 – Published 27 November 2000

Abstract

We have recently proposed a dynamical mechanism that may realize a flat four-dimensional space-time as a brane in type IIB superstring theory. A crucial role is played by the phase of the chiral fermion integral associated with the IKKT (Ishibashi-Kawai-Kitazawa-Tsuchiya) matrix theory, which is conjectured to be a nonperturbative definition of type IIB superstring theory. We demonstrate our mechanism by studying a simplified model, in which we find that a lower-dimensional brane indeed appears dynamically. We also comment on some implications of our mechanism on model building of the brane world.

Received 21 August 2000

DOI:https://doi.org/10.1103/PhysRevLett.85.4664

Authors & Affiliations

Jun Nishimura^* and Graziano Vernizzi^†

The Niels Bohr Institute, Blegdamsvej 17, DK-2100 Copenhagen Ø, Denmark

^*Electronic address: nisimura@nbi.dk Permanent address: Department of Physics, Nagoya University, Nagoya 464-8602, Japan.
^†Electronic address: vernizzi@nbi.dk