Journal
PHYSICS LETTERS B
Volume 704, Issue 5, Pages 384-387Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2011.09.082
Keywords
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Funding
- National Center of Theoretical Science
- National Science Council of ROC [NSC-98-2112-M-007-008-MY3]
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Using the teleparallel equivalent of General Relativity as the gravitational sector, which is based on torsion instead of curvature, we add a canonical scalar field, allowing for a nonminimal coupling with gravity. Although the minimal case is completely equivalent to standard quintessence, the nonminimal scenario has a richer structure, exhibiting quintessence-like or phantom-like behavior, or experiencing the phantom-divide crossing. The richer structure is manifested in the absence of a conformal transformation to an equivalent minimally-coupled model. (C) 2011 Elsevier B.V. All rights reserved.
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