The Matrix String Theory, i.e. the two dimensional U(N) SYM with N = (8, 8) supersymmetry, has classical BPS solutions that interpolate between an initial and a final string configuration via a… (More)

We formulate matrix models for strings in ten dimensional pp-wave backgrounds and for particles in eleven dimensional ones. This is done by first characterizing the deformations of ten dimensional… (More)

The correspondence between Matrix String Theory in the strong coupling limit and IIA superstring theory can be shown by means of the instanton solutions of the former. We construct the general… (More)

In this note we generalize a result by Alekseev and Strobl for the case of p-branes. We show that there is a relation between anomalous free current algebras and ”isotropic” involutive subbundles of… (More)

The covariant quantization of the tensionless free bosonic (open and closed) strings in AdS spaces is obtained. This is done by representing the AdS space as an hyperboloid in a flat auxiliary space… (More)

We construct a gauge fixed action for topological membranes onG2-manifold such that its bosonic part is the standard membrane theory in a particular gauge. We prove that quantum mechanically the… (More)

We obtain the nonperturbative relation v = ± 2 3 √ 3 u + cΛF12 + dΛ. This relation gives 〈trφ3〉 in terms of the prepotential F and the vevs 〈φi〉 in N = 2 SYM with gauge group SU(3). We also obtain… (More)

Extending a recent result of S.B. Giddings, F. Hacquebord and H. Verlinde, we show that in the U (N) SYM Matrix theory there exist classical BPS instantons which interpolate between different closed… (More)

In the tensionless limit of string theory on flat background all the massive tower of states gets squeezed to a common zero mass level and the free theory is described by an infinite amount of… (More)

We consider closed free tensionless strings in AdSd, calculate exactly the boundary/boundary string evolution kernel and find the string dynamics to be completely frozen. We interpret therefore the… (More)