A Self-gravitating Dirac-Born-Infeld Global Monopole

Details A Self-gravitating Dirac-Born-Infeld Global Monopole A Self-gravitating Dirac-Born-Infeld Global Monopole

2009-02-06

arxiv.org/abs/0902.1051v1

Eur.Phys.J.C60:495-500,2009

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, 3 figures, accepted for publication in EPJC

Scientific paper

10.1140/epjc/s10052-009-0943-0

We generalize the field theory of global monopole to Dirac-Born-Infeld(DBI) field and investigate the gravitational property of a DBI global monopole in four-dimensional spherically symmetric spacetime. The coupled equations for the metric and the DBI scalar field are solved asymptotically and numerically. It is found that, just as a canonical global monopole, the gravitational effect of DBI global monopole is equivalent to that of a deficit solid angle in the metric plus a negative mass at the origin. However, compared with a canonical global monopole, for the same false vacuum and symmetry breaking scale, a DBI global monopole has a relatively smaller core and a larger absolute value of effective mass. Thus, it can give out a larger deflect angle when the light passing by. Especially, when the scale of warp factor is small enough, the effective mass of a DBI global monopole does not depend apparently on the value of the false vacuum, which is qualitatively different from that of a canonical global monopole.

Affiliated with

Also associated with

No associations

Rating

A Self-gravitating Dirac-Born-Infeld Global Monopole does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A Self-gravitating Dirac-Born-Infeld Global Monopole, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Self-gravitating Dirac-Born-Infeld Global Monopole will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-251609