CAUP Cookie Seminar - A Stellar Test Of The Physics Of Unification - 23 janeiro 2013
By NelmaS on Seg, 21/01/2013 - 14:33
Fóruns:
A Stellar Test Of The Physics Of Unification
José P. P. Vieira
CAUP
Resumo
We discuss the feasibility of using solar-type main-sequence stars as probes of fundamental physics and unification. We use a simple polytropic stellar structure model and study its sensitivity to variations of the gravitational, strong and electroweak coupling constants in the context of unification scenarios. We quantify the sensitivity of the Sun's interior temperature to these variations, finding |∆α/α| < 1.3 × 10e−4 for a 'canonical' choice of unification scenario, and discuss prospects for future improvements.
23 de janeiro de 2013 | 13:30
Local
Centro de Astrofísica da U.P.
Rua das Estrelas
4150-762 Porto