Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2001-08-27
JHEP 0109:017,2001
Physics
High Energy Physics
High Energy Physics - Theory
53 pages, 21 figures, latex. v2: slightly improved figures
Scientific paper
10.1088/1126-6708/2001/09/017
We study extremal and non-extremal generalizations of the regular non-abelian monopole solution of hep-th/9707176, interpreted in hep-th/0007018 as 5-branes wrapped on a shrinking S^2. Naively, the low energy dynamics is pure N=1 supersymmetric Yang-Mills. However, our results suggest that the scale of confinement and chiral symmetry breaking in the Yang-Mills theory actually coincides with the Hagedorn temperature of the little string theory. We find solutions with regular horizons and arbitrarily high Hawking temperature. Chiral symmetry is restored at high energy density, corresponding to large black holes. But the entropy of the black hole solutions decreases as one proceeds to higher temperatures, indicating that there is a thermodynamic instability and that the canonical ensemble is ill-defined. For certain limits of the black hole solutions, we exhibit explicit non-linear sigma models involving a linear dilaton. In other limits we find extremal non-BPS solutions which may have some relevance to string cosmology.
Gubser Steven S.
Tseytlin Arkady A.
Volkov Mikhail S.
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