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Cosmology with a Primordial Scaling Field

Abstract:

A weakly coupled scalar field $\Phi$ with a simple exponential potential $V=M_P^4\exp(-\lambda\Phi/M_P)$ where $M_P$ is the reduced Planck mass, and $\lambda > 2$, has an attractor solution in a radiation or matter dominated universe in which it mimics the scaling of the dominant component, contributing a fixed fraction $\Omega_\phi$ (determined by $\lambda$) to the energy density. Such fields arise generically in particle physics theories involving compactified dimensions, with values of ...

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Publisher copy:
10.1103/PhysRevD.58.023503

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Journal:
Phys.Rev.D
Volume:
58
Pages:
023503
Publication date:
1997-11-10
DOI:
URN:
uuid:46f020a2-00a7-434c-8557-b3a8ff755ddb
Source identifiers:
208134
Local pid:
pubs:208134
Keywords:

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