منابع مشابه
Interpolating String Field Theories
A minimal area problem imposing different length conditions on open and closed curves is shown to define a one parameter family of covariant open-closed quantum string field theories. These interpolate from a recently proposed factorizable open-closed theory up to an extended version of Witten’s open string field theory capable of incorporating on shell closed strings. The string diagrams of th...
متن کاملApplication of Conformal Gauge Theories Derived from Field-String Duality
In this article I first give an abbreviated history of string theory and then describe the recently-conjectured fieldstring duality. This suggests a class of nonsupersymmetric gauge theories which are conformal (CGT) to leading order of 1/N and some of which may be conformal for finite N. These models are very rigid since the gauge group representations of not only the chiral fermions but also ...
متن کاملFeynman rules for string field theories with discrete target space
We derive a minimal set of Feynman rules for the loop amplitudes in unitary models of closed strings, whose target space is a simply laced (extended) Dynkin diagram. The string field Feynman graphs are composed of propagators, vertices (including tadpoles) of all topologies, and leg factors for the macroscopic loops. A vertex of given topology factorizes into a fusion coefficient for the matter...
متن کاملField Theory Methods in Two-Dimensional and Heterotic String Theories
This thesis has three parts. In the first, we study the Das-Jevicki collective field description of arbitrary classical solutions in the c = 1 matrix model, which are believed to describe nontrivial spacetime backgrounds in 2D string theory. Our analysis naturally includes the case of a Fermi droplet cosmology. We cast the droplet collective field theory in standard coordinates and comment on t...
متن کاملField Definitions, Spectrum and Universality in Effective String Theories
It is shown, by explicit calculation, that the third-order terms in inverse string length in the spectrum of the effective string theories of Polchinski and Strominger are also the same as in Nambu-Goto theory, in addition to the universal Lüscher terms. While the Nambu-Goto theory is inconsistent outside the critical dimension, the PolchinskiStrominger theory is by construction consistent for ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Progress of Theoretical Physics Supplement
سال: 2011
ISSN: 0375-9687
DOI: 10.1143/ptps.188.1