Astrophysical constraints on scalar field models

• Type: Article in International Scientific Journal
• Date: 2005

Authors

bertolami, o (Author) Other; paramos, j (Author) Other

Journal

Title: Physical Review D - Particles, Fields, Gravitation and Cosmology

Vol. 71 No. 3

Pages: 023521-1

ISSN: 1550-7998

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 34 Citations

Scopus - 31 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-000-6FF

DOI: 10.1103/physrevd.71.023521

Abstract (EN): We use stellar structure dynamics arguments to extract bounds on the relevant parameters of two scalar field models: the putative scalar field mediator of a fifth force with a Yukawa potential and the new variable mass particle models. We also analyze the impact of a constant solar inbound acceleration, such as the one reported by the Pioneer anomaly, on stellar astrophysics. We consider the polytropic gas model to estimate the effect of these models on the hydrostatic equilibrium equation and fundamental quantities such as the central temperature. The current bound on the solar luminosity is used to constrain the relevant parameters of each model.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10