Rotational Symmetry Breaking in Multi-Matrix Models

Details Rotational Symmetry Breaking in Multi-Matrix Models Rotational Symmetry Breaking in Multi-Matrix Models

2002-06-25

arxiv.org/abs/hep-th/0206226v1

Phys.Rev. D66 (2002) 085024; Erratum-ibid. D67 (2003) 029904

Physics

High Energy Physics

High Energy Physics - Theory

LaTeX, 18 pages, 2 figures

Scientific paper

10.1103/PhysRevD.66.085024

We consider a class of multi-matrix models with an action which is O(D) invariant, where D is the number of NxN Hermitian matrices X_\mu, \mu=1,...,D. The action is a function of all the elementary symmetric functions of the matrix $T_{\mu\nu}=Tr(X_\mu X_\nu)/N$. We address the issue whether the O(D) symmetry is spontaneously broken when the size N of the matrices goes to infinity. The phase diagram in the space of the parameters of the model reveals the existence of a critical boundary where the O(D) symmetry is maximally broken.

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