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arXiv · hep-th/9707162

Unitary IIB Matrix Model and the Dynamical Generation of the Space Time

Naofumi Kitsunezaki·Jun Nishimura
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Abstract

We propose a unitary matrix model as a regularization of the IIB matrix model of Ishibashi-Kawai-Kitazawa-Tsuchiya (IKKT). The fermionic part is incorporated using the overlap formalism in order to avoid unwanted ``doublers'' while preserving the global gauge invariance. This regularization, unlike the one adopted by IKKT, has manifest U(1)^10 symmetry, which corresponds to the ten-dimensional translational invariance of the space time. We calculate one-loop effective action around some typical BPS-saturated configurations in the weak coupling limit. We also discuss a possible scenario for the dynamical generation of the four-dimensional space time through spontaneous breakdown of the U(1)^10 symmetry in the double scaling limit.

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Naofumi Kitsunezaki, Jun Nishimura. 1998-05-18. Unitary IIB Matrix Model and the Dynamical Generation of the Space Time. https://doi.org/10.1016/s0550-3213(98)00404-0

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