Axions as quintessence in string theory
- Harish-Chandra Research Institute, Allahabad 211019 (India)
- Tata Institute of Fundamental Research, Mumbai 400005 (India)
We construct a model of quintessence in string theory based on the idea of axion monodromy as discussed by McAllister, Silverstein and Westphal [L. McAllister, E. Silverstein, and A. Westphal, Phys. Rev. D 82, 046003 (2010)]. In the model, the quintessence field is an axion whose shift symmetry is broken by the presence of 5-branes which are placed in highly warped throats. This gives rise to a potential for the axion field which is slowly varying, even after incorporating the effects of moduli stabilization and supersymmetry breaking. We find that the resulting time dependence in the equation of state of dark energy is potentially detectable, depending on the initial conditions. The model has many very light extra particles which live in the highly warped throats, but these are hard to detect. A signal in the rotation of the CMB polarization can also possibly arise.
- OSTI ID:
- 21541447
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 83, Issue 8; Other Information: DOI: 10.1103/PhysRevD.83.083506; (c) 2011 American Institute of Physics; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AXIONS
BRANES
EQUATIONS OF STATE
NONLUMINOUS MATTER
POLARIZATION
RELICT RADIATION
ROTATION
SIMULATION
STABILIZATION
STRING MODELS
STRING THEORY
SYMMETRY BREAKING
TIME DEPENDENCE
BOSONS
COMPOSITE MODELS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
EQUATIONS
EXTENDED PARTICLE MODEL
GOLDSTONE BOSONS
MATHEMATICAL MODELS
MATTER
MICROWAVE RADIATION
MOTION
M-THEORY
PARTICLE MODELS
POSTULATED PARTICLES
QUARK MODEL
RADIATIONS