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Late time cosmological phase transitions 1: particle physics models and cosmic evolution
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Frieman, Joshua A. Watkins, Richard Hill, Christopher T. |
| Copyright Year | 1991 |
| Description | We described a natural particle physics basis for late-time phase transitions in the universe. Such a transition can seed the formation of large-scale structure while leaving a minimal imprint upon the microwave background anisotropy. The key ingredient is an ultra-light pseudo-Nambu-Goldstone boson with an astronomically large (O(kpc-Mpc)) Compton wavelength. We analyze the cosmological signatures of and constraints upon a wide class of scenarios which do not involve domain walls. In addition to seeding structure, coherent ultra-light bosons may also provide unclustered dark matter in a spatially flat universe, omega sub phi approx. = 1. |
| File Size | 1696301 |
| Page Count | 42 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19920008477 |
| Archival Resource Key | ark:/13960/t7fr4sn4t |
| Language | English |
| Publisher Date | 1991-11-01 |
| Access Restriction | Open |
| Subject Keyword | Astrophysics Phase Transformations Galactic Evolution Spectral Signatures Universe Domain Wall Dark Matter Anisotropy Astronomical Models Cosmology Mathematical Models Background Radiation Compton Effect Microwaves Bosons Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
