Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-05-09
Phys.Rev. D62 (2000) 123507
Physics
High Energy Physics
High Energy Physics - Phenomenology
17 pages, 7 figures. To appear in Phys. Rev. D
Scientific paper
10.1103/PhysRevD.62.123507
We investigate a topological inflation model in supergravity. By means of numerical simulations, it is confirmed that topological inflation can take place in supergravity. We also show that the condition for successful inflation depends not only on the vacuum-expectation value (VEV) of inflaton field but also on the form of its K\"ahler potential. In fact, it is found that the required VEV of the inflaton $\phi$ can be as small as $<\phi > \simeq 1 \times M_G$, where $M_{G}$ is the gravitational scale.
Kawasaki Masahiro
Sakai Nobuyuki
Yamaguchi Masahide
Yanagida Takayuki
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