Magnetic monopoles, Bogomol'nyi bound and SL(2, Z) invariance in string theory

Sen, Ashoke (1993) Magnetic monopoles, Bogomol'nyi bound and SL(2, Z) invariance in string theory Modern Physics Letters A, 8 (21). pp. 2023-2036. ISSN 0217-7323

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Official URL: http://www.worldscinet.com/mpla/08/0821/S021773239...

Related URL: http://dx.doi.org/10.1142/S0217732393001732

Abstract

We show that in heterotic string theory compactified on a six-dimensional torus, the lower bound (Bogomol'nyi bound) on the dyon mass is invariant under the SL(2, Z) transformation that interchanges strong and weak coupling limits of the theory. Elementary string excitations are also shown to satisfy this lower bound. Finally, we identify specific monopole solutions that are related via the strong-weak coupling duality transformation to some of the elementary particles saturating the Bogomol'nyi bound, and these monopoles are shown to have the same mass and degeneracy of states as the corresponding elementary particles.

Item Type:Article
Source:Copyright of this article belongs to World Scientific Publishing Company.
ID Code:43968
Deposited On:20 Jun 2011 05:13
Last Modified:18 May 2016 00:46

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