Concept

Twistor theory

Related publications (35)

Soft supersymmetry breaking in deformed moduli spaces, conformal theories and N=2 Yang-Mills theory

We give a self-contained discussion of recent progress in computing the non-perturbative effects of small non-holomorphic soft supersymmetry breaking, including a simple new derivation of these results based on an anomaly-free gauged U(1)(R) background. We ...

1999

Spin dependent D-brane interactions and scattering amplitudes in matrix theory

Claudio Scrucca

Spin interactions between two moving Dp-branes are analyzed using the Green-Schwarz formalism of boundary states. This approach turns out to be extremely efficient to compute all the spin effects related by supersymmetry to the leading nu(4)/r(7-p) term. A ...

Springer-Verlag New York, Ms Ingrid Cunningham, 175 Fifth Ave, New York, Ny 10010 Usa1999

Implications of exact SUSY gauge couplings for QCD

Riccardo Rattazzi

The phase structure of SUSY gauge theories can be very different from their nonsupersymmetric counterparts. Nonetheless, there is interesting information which might be gleaned from a detailed investigation of these theories. In particular, we study the pr ...

1999

Scale-independent spin effects in D-brane dynamics

Claudio Scrucca

We study spin interactions between two moving D-branes using the Green-Schwarz formalism of boundary states. We focus our attention on the leading terms for small velocities v, of the form v(4-n)/r(7-P+n) (v(2-n)/r(3-p+n)) for p-p (p-p + 4) systems, with 1 ...

1998

Interaction of moving D-branes on orbifolds

Claudio Scrucca

We use the boundary state formalism to study the interaction of two moving identical D-branes in the Type II superstring theory compactified on orbifolds. By computing the velocity dependence of the amplitude in the limit of large separation we can identif ...

1997

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