Viscosity-induced crossing of the phantom divide in the dark cosmic fluid
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.
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2013-12-01
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| Series: | Frontiers in Physics |
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| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fphy.2013.00027/full |