Tachyon and Quintessence Brane-World Universe

Abstract

Using tachyon or quintessence fields along with a barotropic fluid on the brane we examine the different cosmological stages in a Friedmann-Robertson-Walker(FRW) universe, from the first radiation scenario to the later era dominated by cosmic string networks. We introduce a new algorithm to generalize previous works on exact solutions and apply it to study tachyon and quintessence fields localized on the brane and study the low and high energy regimes. We show that the tachyon and quintessence fields are driven by an inverse power law potential. Finally, we find several simples exacts solutions for tachyon and/or quintessence fields.

8 pages. Version accepted for publication in Physical Review D

References in corpus (2)

• Cosmology of the Tachyon in Brane Inflation
• Power-law cosmological solution derived from DGP brane with a brane tachyon field

Cited by in corpus (5)

• Inflation and late time acceleration in braneworld cosmological models with varying brane tension
• Linking phantom quintessences and tachyons
• Crossing the phantom divide with k-essence in brane-worlds
• k-essence and extended tachyons in brane-worlds
• An exotic k-essence interpretation of interactive cosmological models