Summing Planar Bosonic Strings

Details Summing Planar Bosonic Strings Summing Planar Bosonic Strings

2006-02-13

arxiv.org/abs/hep-th/0602131v2

Nucl.Phys.B746:136-154,2006

Physics

High Energy Physics

High Energy Physics - Theory

Latex, 25 pages, 5 figures, typos corrected, a paragraph, a note, acknowledgements and more references added

Scientific paper

10.1016/j.nuclphysb.2006.04.012

In earlier work, planar graphs of massless phi^3 theory were summed with the help of the light cone world sheet picture and the mean field approximation. In the present article, the same methods are applied to the problem of summing planar bosonic open strings. We find that in the ground state of the system, string boundaries form a condensate on the world sheet, and a new string emerges from this summation. Its slope is always greater than the initial slope, and it remains non-zero even when the initial slope is set equal to zero. If we assume that the initial string tends to some field theory in the zero slope limit, this result provides evidence for string formation in field theory.

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