Abstract
According to previous work, topological defects expand exponentially without end if the vacuum expectation value of the Higgs field is of the order of the Planck mass. We extend the study of inflating topological defects to Brans-Dicke gravity. With the help of numerical simulations we investigate the dynamics and spacetime structure of a global monopole. Contrary to the case of Einstein gravity, any inflating monopole eventually shrinks and takes a stable configuration. We also discuss cosmological constraints on the model parameters.
| Original language | English |
|---|---|
| Pages (from-to) | 1-8 |
| Number of pages | 8 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 59 |
| Issue number | 10 |
| Publication status | Published - 1999 May 15 |
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ASJC Scopus subject areas
- Mathematical Physics
- Physics and Astronomy(all)
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)
Cite this
Monopole inflation in Brans-Dicke theory. / Sakai, Nobuyuki; Yokoyama, Jun'ichi; Maeda, Keiichi.
In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 59, No. 10, 15.05.1999, p. 1-8.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Monopole inflation in Brans-Dicke theory
AU - Sakai, Nobuyuki
AU - Yokoyama, Jun'ichi
AU - Maeda, Keiichi
PY - 1999/5/15
Y1 - 1999/5/15
N2 - According to previous work, topological defects expand exponentially without end if the vacuum expectation value of the Higgs field is of the order of the Planck mass. We extend the study of inflating topological defects to Brans-Dicke gravity. With the help of numerical simulations we investigate the dynamics and spacetime structure of a global monopole. Contrary to the case of Einstein gravity, any inflating monopole eventually shrinks and takes a stable configuration. We also discuss cosmological constraints on the model parameters.
AB - According to previous work, topological defects expand exponentially without end if the vacuum expectation value of the Higgs field is of the order of the Planck mass. We extend the study of inflating topological defects to Brans-Dicke gravity. With the help of numerical simulations we investigate the dynamics and spacetime structure of a global monopole. Contrary to the case of Einstein gravity, any inflating monopole eventually shrinks and takes a stable configuration. We also discuss cosmological constraints on the model parameters.
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UR - http://www.scopus.com/inward/citedby.url?scp=17044378432&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:17044378432
VL - 59
SP - 1
EP - 8
JO - Physical review D: Particles and fields
JF - Physical review D: Particles and fields
SN - 0556-2821
IS - 10
ER -