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arXiv 1005.4276hep-thastro-ph.COgr-qchep-ph
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非对易几何谱Action中的引力波

Gravitational Waves in the Spectral Action of Noncommutative Geometry

William Nelson, Joseph Ochoa, Mairi Sakellariadou

摘要:

非对易几何的谱三元组方法允许人们从一个纯粹的几何立场出发,发展粒子物理的整个标准模型(和超对称扩展),从而把引力和粒子物理放在同一个立足点上。该理论的玻色子部分包含了对爱因斯坦-希尔伯特引力的修正,包括曲率与希格斯场的非共形耦合和共形外尔项(除了非动力学拓扑项)。在本文中,我们推导出弱场极限的引力理论和显示的生产和动力学的引力波显着改变。特别是,我们表明,引力子包含一个大规模的模式,改变了能量损失的引力辐射,在不断发展的四极矩系统。我们明确地计算一般的解决方案,并将其应用到系统的周期性变化的四极矩,特别是集中在众所周知的能量损失公式的圆形双星。

英文摘要:

The spectral triple approach to noncommutative geometry allows one to develop the entire standard model (and supersymmetric extensions) of particle physics from a purely geometry stand point and thus treats both gravity and particle physics on the same footing. The bosonic sector of the theory contains a modification to Einstein-Hilbert gravity, involving a nonconformal coupling of curvature to the Higgs field and conformal Weyl term (in addition to a nondynamical topological term). In this paper we derive the weak field limit of this gravitational theory and show that the production and dynamics of gravitational waves are significantly altered. In particular, we show that the graviton contains a massive mode that alters the energy lost to gravitational radiation, in systems with evolving quadrupole moment. We explicitly calculate the general solution and apply it to systems with periodically varying quadrupole moments, focusing in particular on the the well know energy loss formula for circular binaries.

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