Resumo

HERRERA-AGUILAR, A.  e  TELLEZ-VAZQUEZ, J.O.. Solitones en la teoría Einstein-Maxwell-dilatón-axión. Rev. mex. fis. [online]. 2005, vol.51, n.6, pp.549-557. ISSN 0035-001X.

In the present research work we obtain solitonic solutions by means of two of the most successful nonlinear techniques of the modern physics: the inverse scattering method and the application of Lie-Bäcklund symmetries. We show that these techniques can be applied in the framework of the four-dimensional low-energy effective field theory of the heterotic string better known as Einstein-Maxwell-dilaton-axion theory. Thus, we obtain an exact soliton solution for the field equation of the chiral matrix P, which involves the g_tt-component of the tensor field, the dilaton and a electric field, starting from pure flat space-time. We further apply a nonlinear symmetry of the full effective theory on this soliton solution in order to generate a new field configuration which also involves the pseudoscalar field axion, a magnetic field and the g_t∅-component of the metric tensor (which describes gravitational rotation). We analize as well some properties of these solitonic configurations.

Palavras-chave : Solitons; inverse scattering method; nonlinear Lie-Bäcklund transformations; low-energy heterotic string theory.

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