论文标题
全息图和量子校正宇宙常数
Holographic de Sitter Spacetime and Quantum Corrections to The Cosmological Constant
论文作者
论文摘要
全息图或DS/CFT对应关系研究了Sitter时空上量子重力的动力学方面。我们表明，de Sitter时空是通过使幽灵场复杂化并与假想轴平行流动的自由SP（N）矢量模型出现的。我们确认，通过形式对称性确保了Sitter时空的出现。我们还将量子校正计算为宇宙学常数，直到提出的全息方法中，直到1/N扩展的近级领先顺序。结果，子领先的校正具有与经典值相反的符号。这意味着Sitter SpaceTime上的量子重力在触及稳定上是稳定的，量子效应使宇宙平坦和宇宙常数较小。
A dynamical aspect of quantum gravity on de Sitter spacetime is investigated by holography or the dS/CFT correspondence. We show that de Sitter spacetime emerges from a free Sp(N) vector model by complexifying the ghost fields and flowing them in parallel to the imaginary axis. We confirm that the emergence of de Sitter spacetime is ensured by conformal symmetry. We also compute the quantum corrections to the cosmological constant up to the next-to-leading order of the 1/N expansion in a proposed holographic approach. As a result the sub-leading corrections have the opposite sign to the classical value.This implies that a quantum gravity on de Sitter spacetime is perturbatively stable and quantum effects make the universe flatter and the cosmological constant smaller.
