标题： 非均匀粘性流体在FRW宇宙中 显示英文标题

标题： Inhomogeneous viscous fluids in FRW universe

摘要： 我们对平坦弗里德曼-罗伯逊-沃尔克宇宙中非均匀粘性流体的一些方面进行了简要回顾。 一般来说，指出几种流体模型可能会使未来宇宙的演化变得奇异，出现所谓的大撕裂情景。 我们通过考虑几种情况，研究了在德西特宇宙中与暗物质耦合的流体的影响。 由于这种耦合，可能解决同时性问题，如果德西特解是稳定的，该模型也能够抵御大撕裂奇点。 显示英文摘要

摘要： We give a brief review of some aspects of inhomogeneous viscous fluids in a flat Friedmann-Robertson-Walker Universe. In general, it is pointed out that several fluid models may bring the future Universe evolution to become singular, with the appearance of the so-called Big Rip scenario. We investigate the effects of fluids coupled with dark matter in a de Sitter Universe, by considering several cases. Due to this coupling, the coincidence problem may be solved, and if the de Sitter solution is stable, the model is also protected against the Big Rip singularity.