Evolution and stability Φ4 oscillatons
Evolution and stability Φ4 oscillatons
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Φ4 振荡的演化和稳定性
DOI：
10.1088/0264-9381/29/6/065021
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发表时间：
2012
影响因子：
3.5
通讯作者：
R. Becerril
中科院分区：
文献类型：
--
作者：
L. Ureña‐López;S. Valdez;R. Becerril
在球对称假设下，对具有四次自作用势的实标量场进行数值求解，得到了所谓的振荡孤子星。我们得到了Φ4振子的平衡组态。此外，我们还通过数值分析EKG方程的演化来研究此类振子的稳定性。在径向小扰动和大扰动的影响下，我们研究了四次势对稳定分支(S振子)和不稳定分支(U振子)行为的影响。
We solve numerically the Einstein–Klein–Gordon (EKG) system, assuming spherical symmetry, for a real scalar field endowed with a quartic self-interaction potential, and obtain the so-called oscillatons: oscillating soliton stars. We obtain the equilibrium configurations for Φ4oscillatons. Also, we analyze numerically the evolution of the EKG equations to study the stability of such oscillatons. We present the influence of the quartic potential on the behavior of both the stable (S-oscillatons) and unstable (U-oscillatons) branches, under the influence of small and large radial perturbations.