论文标题
幽灵凝结和纯粹的动力学$ k $ - 在黑暗部门存在现场流体非最小耦合的情况下凝结
Ghost condensates and pure kinetic $k$-essence condensates in presence of field-fluid non-minimal coupling in the dark sector
论文作者
论文摘要
在本文中，我们试图找出与正压流体结合使用的幽灵场会产生宇宙的稳定加速膨胀阶段时的条件。可以看出，在许多情况下，幽灵场会产生冷凝水，并在最终加速阶段将流体能量密度驱动为零，但可能还有其他可能性。我们已经表明，与流体相互作用的纯动力学$ k $ - essence场（这不是幽灵场）也可以形成相互作用引起的冷凝物并产生宇宙的稳定加速阶段。在后一种情况下，流体能量密度在稳定相中不会消失。
In this article we try to find out the conditions when a ghost field in conjunction with a barotropic fluid produces a stable accelerating expansion phase of the universe. It is seen that in many cases the ghost field produces a condensate and drives the fluid energy density to zero in the final accelerating phase, but there can be other possibilities. We have shown that a pure kinetic $k$-essence field (which is not a ghost field) interacting with a fluid can also form an interaction induced condensate and produce a stable accelerating phase of the universe. In the latter case the fluid energy density does not vanish in the stable phase.
