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arXiv 1709.09449hep-thgr-qc
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具有宇宙学常数的带电紧致玻色子星和壳

Charged Compact Boson Stars and Shells in the Presence of a Cosmological Constant

Sanjeev Kumar, Usha Kulshreshtha, Daya Shankar Kulshreshtha

摘要:

本文研究了玻色子星和玻色子壳的理论,该理论涉及耦合到U(1)规范场和引力的大质量复标量场,在一个存在宇宙学常数$Λ$的锥形势中,我们把它当作一个取正负值的自由参数,从而使我们可以分别在de Sitter和Anti de Sitter空间中研究该理论。玻色子星被发现有两种类型,具有球状或壳状电荷密度。我们研究了这些解的性质,并确定了它们在某些特定参数值下的存在域。Kleihaus,Kunz,Laemmerzahl和List在一个理论中也得到了类似的解,这个理论涉及无质量复标量场与U(1)规范场和引力耦合,在没有宇宙学常数$Λ$的情况下,在锥形势中。

英文摘要:

In this work we study the boson stars and boson shells in a theory involving massive complex scalar fields coupled to the U(1) gauge field and gravity in a conical potential in the presence of a cosmological constant $Λ$ which we treat as a free parameter taking positive and negative values and thereby allowing us to study the theory in the de Sitter and Anti de Sitter spaces respectively. Boson stars are found to come in two types, having either ball-like or shell-like charge density. We have studied the properties of these solutions and have also determined their domains of existence for some specific values of the parameters of the theory. Similar solutions have also been obtained by Kleihaus, Kunz, Laemmerzahl and List in a theory involving massless complex scalar fields coupled to the U(1) gauge field and gravity in a conical potential in the absence of a cosmological constant $Λ$.

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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