Non-BPS Dirac-Born-Infeld Solitons

Details Non-BPS Dirac-Born-Infeld Solitons Non-BPS Dirac-Born-Infeld Solitons

1999-07-19

arxiv.org/abs/hep-th/9907156v2

JHEP 9909:016,1999

Physics

High Energy Physics

High Energy Physics - Theory

Major changes; sections removed and title changed. Version published in JHEP

Scientific paper

10.1088/1126-6708/1999/09/016

We show that CPn sigma model solitons solve the field equations of a Dirac-Born-Infeld (DBI) action and, furthermore, we prove that the non-BPS soliton/anti-soliton solutions of the sigma model also solve the DBI equations. Using the moduli space approximation we compare the dynamics of the BPS sigma model solitons with that of the associated DBI solitons. We find that for the CP1 case the metric on the moduli space of sigma model solitons is identical to that of the moduli space of DBI solitons, but for CPn with n>1 we show that the two metrics are not equal. We also consider the possibility of similar non-BPS solitons in other DBI theories.

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