TY - JOUR

T1 - Slinky evolution of domain wall brane cosmology

AU - Kadosh, Avihay

AU - Davidson, Aharon

AU - Pallante, Elisabetta

PY - 2012/12/4

Y1 - 2012/12/4

N2 - Invoking an initial symmetry between the time t and some extra spatial dimension y, we discuss a novel scenario where the dynamical formation of the 4 dimensional brane and its cosmological evolution are induced simultaneously by a common t→y symmetry breaking mechanism. The local maximum of the underlying scalar potential is mapped onto a "watershed" curve in the (t,y) plane; the direction tangent to this curve is identified as the cosmic time, whereas the perpendicular direction serves locally as the extra spatial dimension. Special attention is devoted to the so-called slinky configurations, whose brane cosmology is characterized by a decaying cosmological constant along the watershed curve. Such a slinky solution is first constructed within a simplified case where the watershed is constrained by y=0. The physical requirements for a slinky configuration to generate a realistic model of cosmological evolution are then discussed in a more elaborated framework.

AB - Invoking an initial symmetry between the time t and some extra spatial dimension y, we discuss a novel scenario where the dynamical formation of the 4 dimensional brane and its cosmological evolution are induced simultaneously by a common t→y symmetry breaking mechanism. The local maximum of the underlying scalar potential is mapped onto a "watershed" curve in the (t,y) plane; the direction tangent to this curve is identified as the cosmic time, whereas the perpendicular direction serves locally as the extra spatial dimension. Special attention is devoted to the so-called slinky configurations, whose brane cosmology is characterized by a decaying cosmological constant along the watershed curve. Such a slinky solution is first constructed within a simplified case where the watershed is constrained by y=0. The physical requirements for a slinky configuration to generate a realistic model of cosmological evolution are then discussed in a more elaborated framework.

UR - http://www.scopus.com/inward/record.url?scp=84870602860&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.86.124015

DO - 10.1103/PhysRevD.86.124015

M3 - Article

AN - SCOPUS:84870602860

VL - 86

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

SN - 1550-7998

IS - 12

M1 - 124015

ER -