Populating the landscape: A top-down approach
We put forward a framework for cosmology that combines the string landscape with no boundary initial conditions. In this framework, amplitudes for alternative histories for the universe are calculated with final boundary conditions only. This leads to a top down approach to cosmology, in which the h...
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| Veröffentlicht in: | Physical review. D 2006-06, Vol.73 (12), Article 123527 |
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| container_issue | 12 |
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| container_title | Physical review. D |
| container_volume | 73 |
| creator | Hawking, S. W. Hertog, Thomas |
| description | We put forward a framework for cosmology that combines the string landscape with no boundary initial conditions. In this framework, amplitudes for alternative histories for the universe are calculated with final boundary conditions only. This leads to a top down approach to cosmology, in which the histories of the universe depend on the precise question asked. We study the observational consequences of no boundary initial conditions on the landscape, and outline a scheme to test the theory. This is illustrated in a simple model landscape that admits several alternative inflationary histories for the universe. Only a few of the possible vacua in the landscape will be populated. We also discuss in what respect the top down approach differs from other approaches to cosmology in the string landscape, like eternal inflation. |
| doi_str_mv | 10.1103/PhysRevD.73.123527 |
| format | Article |
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| fulltext | fulltext |
| identifier | ISSN: 1550-7998 |
| ispartof | Physical review. D, 2006-06, Vol.73 (12), Article 123527 |
| issn | 1550-7998 2470-0010 0556-2821 1550-2368 2470-0029 1089-4918 |
| language | eng |
| recordid | cdi_osti_scitechconnect_20774879 |
| source | American Physical Society Journals |
| subjects | AMPLITUDES Astrophysics BOUNDARY CONDITIONS COSMOLOGY Cosmology and Extra-Galactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Theory INFLATIONARY UNIVERSE Physics PHYSICS OF ELEMENTARY PARTICLES AND FIELDS UNIVERSE |
| title | Populating the landscape: A top-down approach |
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