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Non-Topological Inflation from Embedded Defects

DE2003812640

Publication Date	2003
Personal Author	Alexander, S.; Brandenberger, R.
Page Count	14
Abstract	We discuss a new mechanism of obtaining a period of cosmological inflation in the context of string theory. This mechanism is based on embedded defects which form dynamically on higher dimensional D-branes. Such defects generate topological inflation, but unlike topological inflation from stable defects, here there is a natural graceful exit from inflation: the decay of the embedded defect. We demonstrate the idea in the context of a brane-antibrane annihilation process. The graceful exit mechanism suggested here applies generically to all realizations of inflation on D-branes.
Keywords	Inflationary universe String models D-branes Cosmology Defects
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Stanford Linear Accelerator Center, CA.; Brown Univ., Providence, RI. Dept. of Physics.; Department of Energy, Washington, DC.
Supplemental Notes	Prepared in cooperation with Brown Univ., Providence, RI. Dept. of Physics. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200408
Contract Number	DE-AC03-76SSF00515

Non-Topological Inflation from Embedded Defects

Non-Topological Inflation from Embedded Defects
DE2003812640

Publication Date	2003
Personal Author	Alexander, S.; Brandenberger, R.
Page Count	14
Abstract	We discuss a new mechanism of obtaining a period of cosmological inflation in the context of string theory. This mechanism is based on embedded defects which form dynamically on higher dimensional D-branes. Such defects generate topological inflation, but unlike topological inflation from stable defects, here there is a natural graceful exit from inflation: the decay of the embedded defect. We demonstrate the idea in the context of a brane-antibrane annihilation process. The graceful exit mechanism suggested here applies generically to all realizations of inflation on D-branes.
Keywords	Inflationary universe String models D-branes Cosmology Defects
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Stanford Linear Accelerator Center, CA.; Brown Univ., Providence, RI. Dept. of Physics.; Department of Energy, Washington, DC.
Supplemental Notes	Prepared in cooperation with Brown Univ., Providence, RI. Dept. of Physics. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200408
Contract Number	DE-AC03-76SSF00515