弯曲时空中的超流星和Q球
Superfluid stars and Q-balls in curved spacetime
摘要：
在强相互作用量子玻色液体理论的框架下，考虑了一个取自稠密超流模型的具有对数非线性的自相互作用复标量场的广义相对论模型.我们证明了在这个模型中引力平衡的存在，描述球对称非奇异有限质量渐近平坦的解决方案。这些平衡组态既可以描述大质量天体，如玻色化超流星或中子星的核，也可以描述有限尺寸粒子和非拓扑孤子，如Q球。我们给出了这样的对象的质量和大小的估计。
英文摘要：
Within the framework of the theory of strongly-interacting quantum Bose liquids, we consider a general relativistic model of self-interacting complex scalar fields with logarithmic nonlinearity taken from dense superfluid models. We demonstrate the existence of gravitational equilibria in this model, described by spherically symmetric nonsingular finite-mass asymptotically-flat solutions. These equilibrium configurations can describe both massive astronomical objects, such as bosonized superfluid stars or cores of neutron stars, and finite-size particles and non-topological solitons, such as Q-balls. We give an estimate for masses and sizes of such objects.
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