Computations in Large N Matrix Mechanics

Details Computations in Large N Matrix Mechanics Computations in Large N Matrix Mechanics

1999-07-18

arxiv.org/abs/hep-th/9907151v1

Phys.Rev. D60 (1999) 105010

Physics

High Energy Physics

High Energy Physics - Theory

27 pages

Scientific paper

10.1103/PhysRevD.60.105010

The algebraic formulation of Large N matrix mechanics recently developed by Halpern and Schwartz leads to a practical method of numerical computation for both action and Hamiltonian problems. The new technique posits a boundary condition on the planar connected parts X_w, namely that they should decrease rapidly with increasing order. This leads to algebraic/variational schemes of computation which show remarkably rapid convergence in numerical tests on some many- matrix models. The method allows the calculation of all moments of the ground state, in a sequence of approximations, and excited states can be determined as well. There are two unexpected findings: a large d expansion and a new selection rule for certain types of interaction.

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