Stellar Structure and Evolution With Varying Fundamental Couplings

[摘要] 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 |Δα/α| -4for a 'canonical' choice of unification scenario, and discuss prospects for future improvements. Further details can be found in [1].

[发布机构] Centro de Astrofísica, Universidade Do Porto, Rua das Estrelas, Porto; 4150-762, Portugal^1

[效力级别] 天文学 [学科分类] 天文学(综合)

[关键词] Electroweak couplings;Fundamental physics;Future improvements;Interior temperature;Main sequence stars;Sensitivity to variations;Stellar structure