We construct partially localized supergravity counterpart solutions to the 1/2 supersymmetric non-threshold and the 1/4 supersymmetric threshold bound state BI dyons in the D3-brane Dirac-Born-Infeld theory. Such supergravity solutions have all the parameters of the BI dyons. By applying the IIA/IIB T -duality transformations to these supergravity solutions, we obtain the supergravity counterpa...

The non-abelian Einstein-Born-Infeld-Dilaton theory, which rules the dynamics of tensor-scalar gravitation coupled to a su(2)-valued gauge field ruled by Born-Infeld lagrangian, is studied in a cosmological framework. The microscopic energy exchange between the gauge field and the dilaton which results from a non-universality of the coupling to gravity modifies the usual behaviour of tensor-sca...

The ”bag”-like spherically symmetrical solutions of the Chiral Born-Infeld theory are studied. The properties of these solutions are obtained, and a possible physical interpretation is also discussed. PACS number(s): 12.39.Dc, 12.39.Fe, 05.45.Yv, 11.27.+d, 11.30.Qc

We analyze a nonabelian extension of Born–Infeld action for the SU(2) group. In the class of spherically symmetric solutions we find that, besides the Gal’tsov–Kerner glueballs, only the analytic dyons have finite energy. The presented analytic and numerical investigation excludes the existence of pure magnetic monopoles of ’t Hooft–Polyakov type.