Sudden gravitational transition
We investigate the properties of a cosmological scenario which undergoes a gravitational phase transition at late times. In this scenario, the Universe evolves according to general relativity in the standard, hot big bang picture until a redshift z < or approx. 1. Nonperturbative phenomena associ...
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| Veröffentlicht in: | Physical review. D, Particles and fields Particles and fields, 2006-01, Vol.73 (2) |
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| container_title | Physical review. D, Particles and fields |
| container_volume | 73 |
| creator | Caldwell, Robert R. Komp, William Parker, Leonard Vanzella, Daniel A. T. |
| description | We investigate the properties of a cosmological scenario which undergoes a gravitational phase transition at late times. In this scenario, the Universe evolves according to general relativity in the standard, hot big bang picture until a redshift z < or approx. 1. Nonperturbative phenomena associated with a minimally-coupled scalar field catalyzes a transition, whereby an order parameter consisting of curvature quantities such as R{sup 2}, R{sub ab}R{sup ab}, R{sub abcd}R{sup abcd} acquires a constant expectation value. The ensuing cosmic acceleration appears driven by a dark-energy component with an equation-of-state w |
| doi_str_mv | 10.1103/PHYSREVD.73.0 |
| format | Article |
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In this scenario, the Universe evolves according to general relativity in the standard, hot big bang picture until a redshift z < or approx. 1. Nonperturbative phenomena associated with a minimally-coupled scalar field catalyzes a transition, whereby an order parameter consisting of curvature quantities such as R{sup 2}, R{sub ab}R{sup ab}, R{sub abcd}R{sup abcd} acquires a constant expectation value. The ensuing cosmic acceleration appears driven by a dark-energy component with an equation-of-state w<-1. We evaluate the constraints from type 1a supernovae, the cosmic microwave background, and other cosmological observations. 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T.</creator><scope>OTOTI</scope></search><sort><creationdate>20060115</creationdate><title>Sudden gravitational transition</title><author>Caldwell, Robert R. ; Komp, William ; Parker, Leonard ; Vanzella, Daniel A. 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T.</creatorcontrib><collection>OSTI.GOV</collection><jtitle>Physical review. D, Particles and fields</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Caldwell, Robert R.</au><au>Komp, William</au><au>Parker, Leonard</au><au>Vanzella, Daniel A. T.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Sudden gravitational transition</atitle><jtitle>Physical review. D, Particles and fields</jtitle><date>2006-01-15</date><risdate>2006</risdate><volume>73</volume><issue>2</issue><issn>0556-2821</issn><eissn>1089-4918</eissn><abstract>We investigate the properties of a cosmological scenario which undergoes a gravitational phase transition at late times. In this scenario, the Universe evolves according to general relativity in the standard, hot big bang picture until a redshift z < or approx. 1. 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| fulltext | fulltext |
| identifier | ISSN: 0556-2821 |
| ispartof | Physical review. D, Particles and fields, 2006-01, Vol.73 (2) |
| issn | 0556-2821 1089-4918 |
| language | eng |
| recordid | cdi_osti_scitechconnect_20795705 |
| source | APS Journals (American Physical Society) |
| subjects | ACCELERATION COSMIC RADIATION COSMOLOGY EQUATIONS OF STATE EXPECTATION VALUE GENERAL RELATIVITY THEORY GRAVITATION NONLUMINOUS MATTER PHASE TRANSFORMATIONS PHYSICS OF ELEMENTARY PARTICLES AND FIELDS RADIOWAVE RADIATION RED SHIFT RELICT RADIATION SCALAR FIELDS SUPERNOVAE UNIVERSE |
| title | Sudden gravitational transition |
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