Quintom scenario with mixed kinetic terms

Journal Article · Tue Jun 15 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.123523· OSTI ID:21408056

Saridakis, Emmanuel N ^[1]; Weller, Joel M ^[2]

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1. College of Mathematics and Physics, Chongqing University of Posts and Telecommunications, Chongqing, 400065 (China)
2. Department of Applied Mathematics, University of Sheffield, Hounsfield Road, Sheffield S3 7RH (United Kingdom)

We examine an extension of the quintom scenario of dark energy, in which a canonical scalar field and a phantom field are coupled through a kinetic interaction. We perform a phase-space analysis and show that the kinetic coupling gives rise to novel cosmological behavior. In particular, we obtain both quintessence-like and phantomlike late-time solutions, as well as solutions that cross the phantom divide during the evolution of the Universe.

• OSTI ID: 21408056
• Journal Information: Physical Review. D, Particles Fields, Vol. 81, Issue 12; Other Information: DOI: 10.1103/PhysRevD.81.123523; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COSMOLOGICAL MODELS
COUPLING
EVOLUTION
INTERACTIONS
MATHEMATICAL SOLUTIONS
NONLUMINOUS MATTER
PHANTOMS
PHASE SPACE
SCALAR FIELDS
UNIVERSE
MATHEMATICAL MODELS
MATHEMATICAL SPACE
MATTER
MOCKUP
SPACE
STRUCTURAL MODELS