Stability of compactification during inflation

• Verfasst von: Amendola, Luca [VerfasserIn]
• Titel: Stability of compactification during inflation
• Verf.angabe: Luca Amendola, Osservatorio Astronomico di Roma, via del Parco Mellni 84, 00136 Rome, Italy ; Edward W. Kolb, Osservatorio Astronomico di Roma, via del Parco Mellini 84, 00136 Rome, Italy, and NASA/Fermilab Astrophysics Center, Fermi National Accelerator Laboratory, Batavia, Illinois 60510, and Department of Astronomy and Astrophysics and Enrico Fermi Institute, The Uniuersity of Chicago, Chicago, Illinois 60637 ; Marco Litterio and Franco Occhionero, Osservatorio Astronomico di Roma, via del Parco Mellini 84, 00136 Rome, Italy
• Umfang: 6 S.
• Fussnoten: Gesehen am 22.11.2017
• Titel Quelle: Enthalten in: Physical review / D
• Jahr Quelle: 1990
• Band/Heft Quelle: 42(1990), 6, S. 1944-1949
• ISSN Quelle: 1550-2368
• ISSN Quelle: 1089-4918
• DOI: doi:10.1103/PhysRevD.42.1944
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1565593782

Abstract

The possibility that inflation may trigger an instability in compactification of extra spatial dimensions is considered. In old, new, or extended inflation, the false-vacuum energy results in a semiclassical instability in which the scalar field representing the radius of the extra dimensions may tunnel through a potential barrier leading to an expansion of the internal space. In chaotic inflation, if the initial value of the scalar field responsible for inflation is large enough, the internal space becomes classically unstable to ever increasing expansion. Restrictions on inflationary models necessary to keep the extra dimensions small are discussed.