Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2004-06-29
Phys.Lett. B607 (2005) 172-179
Physics
High Energy Physics
High Energy Physics - Theory
Latex2e 13 pages; v.2: minor corrections, typos fixed
Scientific paper
10.1016/j.physletb.2004.12.047
We study the simplest examples of minimal string theory whose worldsheet description is the unitary (p,q) minimal model coupled to two-dimensional gravity (Liouville field theory). In the Liouville sector, we show that four-point correlation functions of `tachyons' exhibit logarithmic singularities, and that the theory turns out to be logarithmic. The relation with Zamolodchikov's logarithmic degenerate fields is also discussed. Our result holds for generic values of (p,q).
Ishimoto Yukitaka
Yamaguchi Shun-ichi
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