Global monopole surrounded by quintessence-like matter

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dc.creatorLi, Xin-zhou
dc.creatorXi, Ping
dc.creatorZhai, Xiang-hua
dc.date2007-12-03
dc.date2008-07-02
dc.date.accessioned2026-07-07T11:54:30Z
dc.date.available2026-07-07T11:54:30Z
dc.descriptionWe present new static spherically-symmetric solutions of Einstein equations with the quintessence-like matter surrounding a global monopole. These new solutions of the coupling scalar-Einstein equations are more complicated, which depend on the parameter of equation of state $-1 < w_{q} <-{1/3}$. A gravitating global monopole produces a gravitational field of de Sitter kind outside the core in addition to a solid angular deficit. In the $w_{q} = -{1/3}$ case, we have proved that the solution cannot exist since the density of quintessence-like tends to zero if $w_{q} \to -{1/3}$. As a new feature, these monopoles have the outer horizon depending on both Goldstone field and quintessence-like. Since current observations constrain $-1.14 < w_{q} < -0.93$, new global monopoles have interesting astrophysical applications.
dc.description8 pages, 8 figures, added discussion and some references, the form accepted for publication in Physics Letter B
dc.identifierhttps://arxiv.org/abs/0712.0208
dc.identifierhttp://arxiv.org/abs/0712.0208
dc.identifierPhys.Lett.B666:125-130,2008
dc.identifierdoi:10.1016/j.physletb.2008.06.069
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/204920
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Theory
dc.titleGlobal monopole surrounded by quintessence-like matter
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