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Is the String Field Big Enough?
Author(s) -
Zwiebach Barton
Publication year - 2001
Publication title -
fortschritte der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.469
H-Index - 71
eISSN - 1521-3978
pISSN - 0015-8208
DOI - 10.1002/1521-3978(200105)49:4/6<387::aid-prop387>3.0.co;2-z
Subject(s) - string field theory , tachyon , theoretical physics , physics , string (physics) , relationship between string theory and quantum field theory , non critical string theory , field (mathematics) , tachyon condensation , string phenomenology , string cosmology , brane , spacetime , string theory , d brane , type i string theory , space (punctuation) , quantum mechanics , quantum gravity , mathematics , pure mathematics , quantum , computer science , operating system
Cubic open string field theory uses a string field which can be roughly thought to represent the tangent space to the space of two‐dimensional field theories at the point corresponding to a space‐filling D‐brane background. It is then natural to wonder if string backgrounds corresponding to field theories a finite distance away can be reached with this string field. In this lecture, I examine various case studies, including the tachyon vacuum, lower dimensional D‐branes, marginal operators, and tachyon effective potentials, and argue that the string field is indeed large enough. Contribution to the proceedings of the workshop “The Quantum Structure of Spacetime and the Geometric Nature of Fundamental Interactions”, Berlin, October 2000.