Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2011-06-02
Physics
High Energy Physics
High Energy Physics - Theory
42 pages, 2 figures; v2: typos corrected, references added; v3: significant changes in section 7, in particular corrected sadd
Scientific paper
We consider worldsheet correlation functions for strings in AdS_5 x S^5 using a light-cone gauge for the worldsheet theory. We compute the saddle-point approximation to three-point functions of BMN vertex operators, all with large charges, by explicitly finding the intersection of three euclidean BMN strings. We repeat this calculation for non-BPS circular winding strings extended along a great circle of the S^5, though in this case the appropriate form of the vertex operator is uncertain. Furthermore, we compute the spectrum of fluctuations about euclidean BMN strings for generic boundary conditions, and show that the spectrum depends only on the total charge and not the details of the string configuration. We extend our considerations to include near-BMN vertex operators and through the evaluation of the string path integral make contact with the light-cone string field theory calculations of gauge theory three-point structure constants.
Klose Thomas
McLoughlin Tristan
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