R. L. Pakman | Searcharxiv

arXiv2000

Supersymmetric Dirac-Born-Infeld theory in noncommutative space

We present a supersymmetric version of Dirac-Born-Infeld (DBI) theory in noncommutative space-time, both for Abelian and non-Abelian gauge groups. We show, using the superfield formalism, that the definition of a certain ordering with respect to the * product leads naturally to a DBI action both in the U(1) as well as in the U(N) case. BPS equations are analysed in this context and properties of the resulting theory are discussed.

hep-th↗

arXiv1999

Monopoles, Dyons and Theta Term in Dirac-Born-Infeld Theory

We present dyon solutions to an SU(2) Dirac-Born-Infeld (DBI) gauge theory coupled to a Higgs triplet. We consider different non-Abelian extensions of the DBI action and study the resulting solutions numerically, comparing them with the standard Julia-Zee dyons. We discuss the existence of a critical value of $β$, the Born-Infeld absolute field parameter, below which the solution ceases to exist. We also analyse the effect of modifying the DBI action so as to include the analogous of the $θ$ term, showing that Witten formula for the dyon charge also holds in DBI theories.

hep-th↗