Cosmological Scaling Solutions and Cross-coupling Exponential Potential

Simple item page
dc.creatorGuo, Zong-Kuan
dc.creatorPiao, Yun-Song
dc.creatorCai, Rong-Gen
dc.creatorZhang, Yuan-Zhong
dc.date2003-06-25
dc.date.accessioned2026-07-07T04:15:23Z
dc.date.available2026-07-07T04:15:23Z
dc.descriptionWe present a phase-space analysis of cosmology containing multiple scalar fields with a positive or negative cross-coupling exponential potential. We show that there exist power-law kinetic-potential-scaling solutions for a sufficiently flat positive potential or for a steep negative potential. The former is the unique late-time attractor, but it is difficult to yield assisted inflation. The later is never stable in an expanding universe. Moreover, for a steep negative potential there exists a kinetic-dominated regime in which each solution is a late-time attractor. In the presence of ordinary matter these scaling solutions with a negative cross-coupling potential are found unstable. We briefly discuss the physical consequences of these results.
dc.description9 pages, LaTeX2e
dc.identifierhttps://arxiv.org/abs/hep-th/0306245
dc.identifierhttp://arxiv.org/abs/hep-th/0306245
dc.identifierPhys.Lett. B576 (2003) 12-17
dc.identifierdoi:10.1016/j.physletb.2003.09.074
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/51982
dc.subjectHigh Energy Physics - Theory
dc.titleCosmological Scaling Solutions and Cross-coupling Exponential Potential
dc.typetext

Files

Collections

arXiv