Correspondence of I- and Q-balls as Non-relativistic Condensates
Correspondence of I- and Q-balls as Non-relativistic Condensates
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I 球和 Q 球作为非相对论性凝聚体的对应关系
DOI：
10.1088/1475-7516/2014/08/051
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
K. Mukaida and M. Takimoto
中科院分区：
文献类型：
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作者：
D. Wakabayashi;N. Funamori;and T. Sato;D. Wakabayashi and N. Funamori;若林大佑;K. Mukaida and M. Takimoto
如果一个实标量场是由非相对论模式主导的，那么它就近似地保持它的粒子数，并且服从一个方程，这个方程支配着一个具有守恒全局U(1)对称性的复标量场理论。从这个事实可以看出，i球（振荡）可以很自然地理解为非相对论性q球解的投影（如实部）。特别地，我们阐明了在相应的复标量场理论中，只要非相对论性条件成立，i球的稳定性是由U(1)对称性保证的。我们还从复标量场的角度，从U(1)电荷违背过程的角度讨论了i球的寿命。
If a real scalar field is dominated by non-relativistic modes, then it approximately conserves its particle number and obeys an equation that governs a complex scalar field theory with a conserved global U (1) symmetry. From this fact, it is shown that the I-ball (oscillon) can be naturally understood as a projection (eg, real part) of the non-relativistic Q-ball solution. In particular, we clarify that the stability of the I-ball is guaranteed by the U (1) symmetry in the corresponding complex scalar field theory as long as the non-relativistic condition holds. We also discuss the longevity of I-ball from the perspective of the complex scalar field in terms of U (1) charge violating processes.