AUTHOR=Brevik Iver H.

TITLE=Viscosity-induced crossing of the phantom divide in the dark cosmic fluid

JOURNAL=Frontiers in Physics

VOLUME=Volume 1 - 2013

YEAR=2013

URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2013.00027

DOI=10.3389/fphy.2013.00027

ISSN=2296-424X

ABSTRACT=Choosing various natural  forms for the equation-of-state parameter $w$ and the bulk viscosity $\zeta$, we discuss how it is possible for a dark energy fluid to slide from the quintessence region across the divide $w=-1$ into the phantom region, and thus into a Big Rip future singularity.