Large Conformal Deformations and Symmetries of Strings
Abstract
In this thesis, first a correct regularization for integrals of time ordered product of vertex operators is outlined. Applying this regularization I demonstrate in detail how the space of nearby twodimensional quantum field theories can be parametrized by offshell states of free closed string. The condition for the deformed theory to be conformally symmetrical induces a dynamic equation, which can be considered as a classical equation of motion in closed string field theory. This equation includes an infinite number of higher order terms. I give an exact procedure for their calculation and describe the symmetries that are equivalence relations of twodimensional quantum field theories. In this framework I show how to perform a nonperturbative analysis in the lowenergy limit and prove that it corresponds to the BransDicke theory of gravity interacting with a skew symmetric tensor field.
 Publication:

Ph.D. Thesis
 Pub Date:
 January 1995
 DOI:
 10.48550/arXiv.hepth/9501082
 arXiv:
 arXiv:hepth/9501082
 Bibcode:
 1995PhDT........63P
 Keywords:

 QUANTUM FIELD THEORY;
 Physics: Elementary Particles and High Energy; Mathematics;
 High Energy Physics  Theory
 EPrint:
 9 pages, LaTeX