Details

Autor(en) / Beteiligte

• Makeenko, Yuri
• Olesen, Poul

Titel

Semiclassical Regge trajectories of noncritical string and large-N QCD

Ist Teil von

• The journal of high energy physics, 2010-08, Vol.2010 (8), Article 95

Ort / Verlag

Berlin/Heidelberg: Springer-Verlag

Erscheinungsjahr

2010

Quelle

SpringerLink

Beschreibungen/Notizen

• 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 semi classical correction to the classical string (known as the Lüscher term) and obtain in t he 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 .