Effective Action and Measure in Matrix Model of IIB Superstrings

Details Effective Action and Measure in Matrix Model of IIB Superstrings Effective Action and Measure in Matrix Model of IIB Superstrings

1997-05-04

arxiv.org/abs/hep-th/9705014v2

Mod.Phys.Lett. A12 (1997) 2331-2340

Physics

High Energy Physics

High Energy Physics - Theory

9pp., Latex; v2: the discussion of the large N limit of the induced measure is substantially expanded

Scientific paper

10.1142/S0217732397002417

We calculate an effective action and measure induced by the integration over the auxiliary field in the matrix model recently proposed to describe IIB superstrings. It is shown that the measure of integration over the auxiliary matrix is uniquely determined by locality and reparametrization invariance of the resulting effective action. The large--$N$ limit of the induced measure for string coordinates is discussed in detail. It is found to be ultralocal and, thus, possibly is irrelevant in the continuum limit. The model of the GKM type is considered in relation to the effective action problem.

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