Stellar Structure and Evolution With Varying Fundamental Couplings

6th Nuclear Physics in Astrophysics

物理学;天文学

Vieira, J.P.P.^1 ; Martins, C.J.A.P.^1 ; Monteiro, M.J.P.F.G.^1

Centro de Astrofísica, Universidade Do Porto, Rua das Estrelas, Porto

4150-762, Portugal^1

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

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/665/1/012082/pdf
DOI  :  10.1088/1742-6596/665/1/012082

学科分类：天文学(综合)

来源: IOP

【 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].