STRINGY SPHALERONS AND GAUSS--BONNET TERM

Details STRINGY SPHALERONS AND GAUSS--BONNET TERM STRINGY SPHALERONS AND GAUSS--BONNET TERM

1995-03-14

arxiv.org/abs/hep-th/9503092v1

Phys.Lett. B352 (1995) 261-268

Physics

High Energy Physics

High Energy Physics - Theory

Latex, 9 pages (27 Kb), figures upon request

Scientific paper

10.1016/0370-2693(95)00495-7

The effect of the Gauss--Bonnet term on the SU(2) non--Abelian regular stringy sphaleron solutions is studied within the non--perturbative treatment. It is found that the existence of regular solutions depends crucially on the value of the numerical factor $\beta$ in front of the Gauss--Bonnet term in the four--dimensional effective action. Numerical solutions are constructed in the N=1, 2, 3 cases for different $\beta$ below certain critical values $\beta_N$ which decrease with growing N (N being the number of nodes of the Yang--Mills function). It is proved that for any static spherically symmetric asymptotically flat regular solution the ADM mass is exactly equal to the dilaton charge. No solutions were found for $\beta$ above critical values, in particular, for $\beta=1$.

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