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Large Scale Power and Running Spectral Index in New Old Inflation.

DE2004826520

Publication Date	2003
Personal Author	Dvalia, G.; Kachru, S.
Page Count	18
Abstract	We have proposed a new class of inflationary scenarios in which the first stage of expansion is driven by 'old' false vacuum inflation. This ends by nucleation of a bubble, which then further inflates. Unlike the standard slow-roll scenarios the 'clock' ending the second inflationary phase is not a local order parameter, but rather the average value of an oscillating scalar field, which locks the system at a saddle point of the potential in a temporary inflationary state. Inflation ends when the amplitude drops below a certain critical point and liberates the system from the false vacuum state. The second stage of inflation has only about 50 e-foldings, a number which is determined entirely by the ratio of the fundamental mass scales, such as the Planck/string scale and the supersymmetry breaking scale. The density perturbations are generated due to fluctuations of moduli-dependent Yukawa couplings.
Keywords	Amplitudes Inflationary universe Fluctuations Order parameters Scalar fields Nucleation Coupling Supersymmetry Symmetry breaking Vacuum states Wavelengths
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	New York Univ., NY. Dept. of Physics.; Stanford Univ., CA. Dept. of Physics.; Department of Energy, Washington, DC.
Supplemental Notes	Prepared in cooperation with Stanford Univ., CA. Dept. of Physics. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200510

Large Scale Power and Running Spectral Index in New Old Inflation.

Large Scale Power and Running Spectral Index in New Old Inflation.
DE2004826520

Publication Date	2003
Personal Author	Dvalia, G.; Kachru, S.
Page Count	18
Abstract	We have proposed a new class of inflationary scenarios in which the first stage of expansion is driven by 'old' false vacuum inflation. This ends by nucleation of a bubble, which then further inflates. Unlike the standard slow-roll scenarios the 'clock' ending the second inflationary phase is not a local order parameter, but rather the average value of an oscillating scalar field, which locks the system at a saddle point of the potential in a temporary inflationary state. Inflation ends when the amplitude drops below a certain critical point and liberates the system from the false vacuum state. The second stage of inflation has only about 50 e-foldings, a number which is determined entirely by the ratio of the fundamental mass scales, such as the Planck/string scale and the supersymmetry breaking scale. The density perturbations are generated due to fluctuations of moduli-dependent Yukawa couplings.
Keywords	Amplitudes Inflationary universe Fluctuations Order parameters Scalar fields Nucleation Coupling Supersymmetry Symmetry breaking Vacuum states Wavelengths
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	New York Univ., NY. Dept. of Physics.; Stanford Univ., CA. Dept. of Physics.; Department of Energy, Washington, DC.
Supplemental Notes	Prepared in cooperation with Stanford Univ., CA. Dept. of Physics. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200510