标题： 广义相对论有效场理论中的真空能 显示英文标题

标题： Vacuum energy in the effective field theory of general relativity

摘要： 在广义相对论的有效场论框架下，考虑了标量和矢量玻色子与度规场相互作用的模型。 在二环阶计算的框架下，显示对于由真空能量消失条件确定的宇宙学常数项，引力子保持无质量，并且存在一个自洽的有效场论框架下的广义相对论与物质场的耦合，该理论定义在一个平直的闵可夫斯基背景上。 该结果是在假设引力场的能量-动量张量由Landau-Lifshitz经典教科书中的拟张量给出的前提下获得的。 还简要讨论了对宇宙学常数问题的含义。 显示英文摘要

摘要： In the framework of an effective field theory of general relativity a model of scalar and vector bosons interacting with the metric field is considered. It is shown in the framework of a two-loop order calculation that for the cosmological constant term which is fixed by the condition of vanishing vacuum energy the graviton remains massless and there exists a self-consistent effective field theory of general relativity coupled to matter fields defined on a flat Minkowski background. This result is obtained under the assumption that the energy-momentum tensor of the gravitational field is given by the pseudotensor of Landau-Lifshitz's classic textbook. Implications for the cosmological constant problem are also briefly discussed.