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首页> 外文期刊>Physical Review D >Current and future white dwarf mass-radius constraints on varying fundamental couplings and unification scenarios
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Current and future white dwarf mass-radius constraints on varying fundamental couplings and unification scenarios

机译：当前和未来的白矮人质量半径限制不同的基本耦合和统一场景

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摘要

We discuss the feasibility of using astrophysical observations of white dwarfs as probes of fundamental physics. We quantify the effects of varying fundamental couplings on the white dwarf mass-radius relation in a broad class of unification scenarios, both for the simple case of a polytropic stellar structure model and for more general models. Independent measurements of the mass and radius, together with direct spectroscopic measurements of the fine-structure constant in white dwarf atmospheres lead to constraints on combinations of the two phenomenological parameters describing the underlying unification scenario (one of which is related to the strong sector of the theory while the other is related to the electroweak sector). While currently available measurements do not yet provide stringent constraints, we show that forthcoming improvements, expected for example from the Gaia satellite, can break parameter degeneracies and lead to constraints that ideally complement those obtained from local laboratory tests using atomic clocks.
机译：我们讨论了使用白矮星的天体物理观测作为基本物理学探针的可行性。我们在广泛的统一场景中量化了不同基本耦合对白矮主的大规模关系的影响，这对于多种多说的恒星结构模型和更一般的模型。质量和半径的独立测量与白矮星大气中的细结构常数的直接光谱测量导致了描述了描述基础统一场景的两种现象学参数的组合（其中一个与强大的部门有关）的组合理论而另一个与Electroweak Sector相关）。虽然目前可用的测量尚未提供严格的约束，但我们展示即将到来的即将到来的改进，预计例如来自Gaia卫星，可以破坏参数退化，并导致限制，理想地补充来自原子钟从当地实验室测试获得的限制。

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  • 来源
    《Physical Review D》 |2017年第8期|083012.1-083012.11|共11页
  • 作者

    D. M. N. Magano; J. M. A. Vilas Boas; C. J. A. P. Martins;

  • 作者单位

    Centro de Astrofisica da Universidade do Porto Rua das Estrelas 4150-762 Porto Portugal Faculdade de Ciências Universidade do Porto Rua do Campo Alegre 4150-007 Porto Portugal;

    Centro de Astrofisica da Universidade do Porto Rua das Estrelas 4150-762 Porto Portugal Faculdade de Ciências Universidade do Porto Rua do Campo Alegre 4150-007 Porto Portugal;

    Centro de Astrofisica da Universidade do Porto Rua das Estrelas 4150-762 Porto Portugal Instituto de Astrofisica e Ciências do Espaco CAUP Rua das Estrelas 4150-762 Porto Portugal;

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