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arXiv 0708.2673gr-qchep-th
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孤子和非孤子Q星

Solitonic and Non-Solitonic Q-Stars

Y. Verbin

摘要:

研究了几种类型的Q星的性质,并与它们的平坦空间类似物Q球进行了比较。该分析是基于计算的质量,整体U(1)的电荷和结合能的家庭的解决方案参数化的中心值的标量场。两个最常用的Q-星模型(不同的潜在项)进行了研究。虽然这两种类型的Q星之间有着普遍的相似之处,但在非引力系统方面存在着重要的差异和新的特征。我们发现,不具有平坦的空间限制的非孤子解,在弱(标量)场区域以及在强中心标量场的相反区域,根本不存在Q球解决方案。

英文摘要:

The properties of several types of Q-stars are studied and compared with their flat space analogues, i.e. Q-balls. The analysis is based on calculating the mass, global U(1) charge and binding energy for families of solutions parametrized by the central value of the scalar field. The two most frequently used Q-star models (differing by their potential term) are studied. Although there are general similarities between both Q-star types, there are important differences as well as new features with respect to the non-gravitating systems. We find non-solitonic solutions which do not have a flat space limit, in the weak (scalar) field region as well as in the opposite region of strong central scalar field for which there does not exist Q-ball solutions at all.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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