Abstract
In loop quantum gravity, modifications to the geometrical density cause a self-interacting scalar field to accelerate away from a minimum of its potential. In principle, this mechanism can generate the conditions that subsequently lead to slow-roll inflation. The consequences for this mechanism of various quantization ambiguities arising within loop quantum cosmology are considered. For the case of a quadratic potential, it is found that some quantization procedures are more likely to generate a phase of slow-roll inflation. In general, however, loop quantum cosmology is robust to ambiguities in the quantization and extends the range of initial conditions for inflation.
| Original language | English (US) |
|---|---|
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 70 |
| Issue number | 4 |
| DOIs | |
| State | Published - Jan 1 2004 |
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All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)
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Inflationary cosmology and quantization ambiguities in semiclassical loop quantum gravity. / Bojowald, Martin; Lidsey, James E.; Mulryne, David J.; Singh, Parampreet; Tavakol, Reza.
In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 70, No. 4, 01.01.2004.Research output: Contribution to journal › Article
TY - JOUR
T1 - Inflationary cosmology and quantization ambiguities in semiclassical loop quantum gravity
AU - Bojowald, Martin
AU - Lidsey, James E.
AU - Mulryne, David J.
AU - Singh, Parampreet
AU - Tavakol, Reza
PY - 2004/1/1
Y1 - 2004/1/1
N2 - In loop quantum gravity, modifications to the geometrical density cause a self-interacting scalar field to accelerate away from a minimum of its potential. In principle, this mechanism can generate the conditions that subsequently lead to slow-roll inflation. The consequences for this mechanism of various quantization ambiguities arising within loop quantum cosmology are considered. For the case of a quadratic potential, it is found that some quantization procedures are more likely to generate a phase of slow-roll inflation. In general, however, loop quantum cosmology is robust to ambiguities in the quantization and extends the range of initial conditions for inflation.
AB - In loop quantum gravity, modifications to the geometrical density cause a self-interacting scalar field to accelerate away from a minimum of its potential. In principle, this mechanism can generate the conditions that subsequently lead to slow-roll inflation. The consequences for this mechanism of various quantization ambiguities arising within loop quantum cosmology are considered. For the case of a quadratic potential, it is found that some quantization procedures are more likely to generate a phase of slow-roll inflation. In general, however, loop quantum cosmology is robust to ambiguities in the quantization and extends the range of initial conditions for inflation.
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U2 - 10.1103/PhysRevD.70.043530
DO - 10.1103/PhysRevD.70.043530
M3 - Article
VL - 70
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
SN - 0556-2821
IS - 4
ER -