Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9861526 | Physics Letters B | 2005 | 6 Pages |
Abstract
We argue that in the context of string theory a large number N of connected degenerate supersymmetric vacua will lead to a ground state for the universe with a small, non-zero cosmological constant. For concreteness, we imagine a history where quantum fluctuations in any one vacuum give an energy density â¼H2mpl2 but the universe quickly cascades to a state of energy density â¼H2mpl2/N at the beginning of inflation. A similar process can occur at the electroweak and other phase transitions. The wavefunction of the universe becomes a superposition of many string vacua.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Gordon L. Kane, Malcolm J. Perry, Anna N. Żytkow,