A Self-gravitating Dirac-Born-Infeld Global Monopole

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dc.creatorLiu, Dao-Jun
dc.creatorZhang, Ying-Li
dc.creatorLi, Xin-Zhou
dc.date2009-02-06
dc.date.accessioned2026-07-07T12:56:54Z
dc.date.available2026-07-07T12:56:54Z
dc.descriptionWe 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.
dc.description10 pages, 3 figures, accepted for publication in EPJC
dc.identifierhttps://arxiv.org/abs/0902.1051
dc.identifierhttp://arxiv.org/abs/0902.1051
dc.identifierEur.Phys.J.C60:495-500,2009
dc.identifierdoi:10.1140/epjc/s10052-009-0943-0
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/224743
dc.subjectHigh Energy Physics - Theory
dc.titleA Self-gravitating Dirac-Born-Infeld Global Monopole
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