标题： 宇宙反引力 显示英文标题

标题： Cosmic antigravity

摘要： 讨论了广义相对论中引力排斥的可能性，并描述了支持宇宙加速的天文数据。 强调了真空能量的问题，并指出了可能的解决途径。 主要关注的是调整机制，该机制原则上可以将原本巨大的真空能量补偿到宇宙学可接受的值，并解决未被补偿的真空能量残余量与当前宇宙能量密度相近的巧合问题。 最后，考虑了可能的大尺度引力修正，这些修正可能会导致宇宙加速膨胀。 显示英文摘要

摘要： Possibility of gravitational repulsion in General Relativity is discussed and astronomical data in favor of cosmological acceleration are described. The problem of vacuum energy is emphasized and possible ways of its solution are indicated. The main attention is payed to adjustment mechanism which in principle could compensate originally huge vacuum energy down to cosmologically acceptable value and to solve the coincidence problem of a close magnitudes of the non-compensated remnants of vacuum energy and the energy density of the universe at the present time. Finally possible modifications of gravity at large scales which could induce accelerated cosmological expansion are considered.