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arXiv 0808.2808hep-thgr-qchep-ph
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Einstein-Yang-Mills-Higgs模型的新球对称解

New spherically symmetric solutions in Einstein-Yang-Mills-Higgs model

Junji Jia

摘要:

我们研究SU(2)Einstein-Yang-Mills-Higgs理论中的经典解。球对称ansätze的所有领域,并推导出的运动方程作为一个系统的常微分方程。研究了正则解的渐近性和空间原点的边界条件以及黑洞解事件视界边界条件。利用打靶法,我们找到了理论的数值解.对于正则解,我们找到了两组新的渐近平坦解。这些集合中的每一个集合包含由射击参数所跨越的参数空间中的解的连续统。解沿这些参数曲线分叉,分叉被认为是由于模型的内部结构。两组解都是渐近平坦的,但一组是指数平坦的,另一组是振荡的。对于黑洞,研究了一组新的边界条件,发现在参数空间中也存在连续的黑洞解,并且这些解也具有类似的分支行为。这些解的SU(2)荷为零,证明了这些解是不稳定的。

英文摘要:

We study classical solutions in the SU(2) Einstein-Yang-Mills-Higgs theory. The spherically symmetric ansätze for all fields are given and the equations of motion are derived as a system of ordinary differential equations. The asymptotics and the boundary conditions at space origin for regular solutions and at event horizon for black hole solutions are studied. Using the shooting method, we found numerical solutions to the theory. For regular solutions, we find two new sets of asymptotically flat solutions. Each of these sets contains continua of solutions in the parameter space spanned by the shooting parameters. The solutions bifurcate along these parameter curves and the bifurcation are argued to be due to the internal structure of the model. Both sets of the solutions are asymptotically flat but one is exponentially so and the other is so with oscillations. For black holes, a new set of boundary conditions is studied and it is found that there also exists a continuum of black hole solutions in parameter space and similar bifurcation behavior is also present to these solutions. The SU(2) charges of these solutions are found zero and these solutions are proven to be unstable.

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