Bosonic String and String Field Theory: a solution using Ultradistributions of Exponential Type
arXiv:0706.1377 · doi:10.1007/s10773-007-9583-z
Abstract
In this paper we show that Ultradistributions of Exponential Type (UET) are appropriate for the description in a consistent way string and string field theories. A new Lagrangian for the closed string is obtained and shown to be equivalent to Nambu-Goto's Lagrangian. We also show that the string field is a linear superposition of UET of compact support CUET). We evaluate the propagator for the string field, and calculate the convolution of two of them.
30 pages