Propagation of Particles and Strings in One-Dimensional Universe
نویسنده
چکیده
We review the basics of the dynamics of closed strings moving along the infinite discretized line ZZ. The string excitations are described by a field φx(τ) where x ∈ ZZ is the position of the string in the embedding space and τ is a semi-infinite “euclidean time” parameter related to the longitudinal mode of the string. Interactions due to splitting and joining of closed strings are taken into account by a local potential and occur only along the edge τ = 0 of the semi-plane (x, τ).
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