โ Scribed by Arik, M.
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
## WE BOTH REMEMBER AMOS DE-SHALIT A8 A WONDERFUL FRIEND AND TEACHER The Ward-like identities previously proposed in order to eliminate unphysical states (ghosts) from dual amplitudes and generalized by Virasoro, are investigated within the context of the projective operator language. We are able
Dual-resonance models are treated both as S-matrix theories and as systems of interacting strings. We show how Veneziano was able to construct a dual four-point amplitude with narrow resonances and rising Regge trajectories. The construction is generalized to the JV-point amplitude in the manifestly
We generalize the definition of the operators corresponding to particle addition in the abelian sandpile models to include a phase factor e ~', where n is the number of topplings in the avalanche, and โข is a real parameter. The new operators so defined are still abelian, and their derivatives with r