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arXiv · 1006.0078

Semiclassical Regge trajectories of noncritical string and large-N QCD

Yuri Makeenko·Poul Olesen
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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.

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Yuri Makeenko, Poul Olesen. 2010-07-28. Semiclassical Regge trajectories of noncritical string and large-N QCD. https://doi.org/10.1007/jhep08(2010)095

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