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arXiv · hep-th/9212085

The Influence of World-Sheet Boundaries on Critical Closed String Theory

Michael B. Green
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Abstract

This paper considers interactions between closed strings and open strings satisfying either Neumann or constant (point-like) Dirichlet boundary conditions in a BRST formalism in the critical dimension. With Neumann conditions this reproduces the well-known stringy version of the Higgs mechanism. With Dirichlet conditions the open-string states correspond to either auxiliary or Lagrange multiplier target-space fields and their coupling to the closed-string sector leads to constraints on the closed-string spectrum.

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Michael B. Green. 1992-12-14. The Influence of World-Sheet Boundaries on Critical Closed String Theory. https://doi.org/10.1016/0370-2693(93)90631-q

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