arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1206.2632hep-phhep-th
收藏

Q球的能量动量张量、稳定性和D项

Energy momentum tensor, stability, and the D-term of Q-balls

Manuel Mai, Peter Schweitzer

摘要:

本文研究了U(1)对称标量场理论中稳定、亚稳定和不稳定Q球的能量动量张量。我们计算的属性,如电荷,质量,均方半径和常数d1(“D-项”)作为相空间角速度ω的函数。我们讨论的限制时,欧米茄接近的解决方案存在的区域的边界,并得出分析结果的数量在这些限制。这项工作的中心结果是严格的证明,d1是严格负的所有有限能量的Q球系统的解决方案。我们还表明,Q球稳定性是一个充分的,但不是必要的,条件为d1是负的。

英文摘要:

We study the energy-momentum tensor of stable, meta-stable and unstable Q-balls in scalar field theories with U(1) symmetry. We calculate properties such as charge, mass, mean square radii and the constant d1 ("D-term") as functions of the phase space angular velocity omega. We discuss the limits when omega approaches the boundaries of the region in which solutions exist, and derive analytical results for the quantities in these limits. The central result of this work is the rigorous proof that d1 is strictly negative for all finite energy solutions in the Q-ball system. We also show that for Q-balls stability is a sufficient, but not necessary, condition for d1 to be negative.

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。

↑