Digitizing the Neveu-Schwarz Model on the Lightcone Worldsheet

Details Digitizing the Neveu-Schwarz Model on the Lightcone Worldsheet Digitizing the Neveu-Schwarz Model on the Lightcone Worldsheet

2010-05-17

arxiv.org/abs/1005.2924v1

Physics

High Energy Physics

High Energy Physics - Theory

23 pages, 7 figures

Scientific paper

The purpose of this article is to extend the lightcone worldsheet lattice description of string theory to include the Neveu-Schwarz model. We model each component of the fermionic worldsheet field by a critical Ising model. We show that a simple choice of boundary conditions for the Ising variables leads to the half integer modes required by the model. We identify the G-parity operation within the Ising model and formulate the procedure for projecting onto the even G-parity sector. We construct the lattice version of the three open string vertex, with the necessary operator insertion at the interaction point. We sketch a formalism for summing planar open string multi-loop amplitudes, and we discuss prospects for numerically summing them. If successful, the methods described here could provide an alternative to lattice gauge theory for computations in large N QCD.

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