Semiclassical Regge trajectories of noncritical string and large-N QCD
High Energy Physics - Theory
2014-11-21 v2 High Energy Physics - Phenomenology
Abstract
By properly treating the path integral over the boundary value of the Liouville field (associated with reparametrizations of the boundary contour) in open string theory, we derive consistent off-shell scattering amplitudes in d=26 dimensions. In d<26 we consider a recently proposed boundary ansatz which reproduces a semiclassical correction to the classical string (known as the Luscher term) and obtain in the semiclassical approximation a linear Regge trajectory with the intercept (d-2)/24. We associate it with the quark-antiquark Regge trajectory in large-N QCD and explain why it dominates over perturbative QCD when t > -few GeV^2.
Keywords
Cite
@article{arxiv.1006.0078,
title = {Semiclassical Regge trajectories of noncritical string and large-N QCD},
author = {Yuri Makeenko and Poul Olesen},
journal= {arXiv preprint arXiv:1006.0078},
year = {2014}
}
Comments
20pp., 2 figures; v2: minor changes, to appear in JHEP