标题： 引力对暴胀子衰变的影响 显示英文标题

标题： Gravitational Effects on Inflaton Decay

摘要： 我们指出，暴胀场不可避免地通过哈勃参数或宇宙尺度因子的振荡与所有非共形耦合物质引力耦合。 这会导致在暴胀场振荡阶段产生粒子，这在暴胀结束后最为有效。 此外，该分析扩展到暴胀场与引力的非最小耦合模型，在该模型中，哈勃参数振荡更加剧烈。 我们将结果应用于暴胀场产生的引力子：引力子也在暴胀后产生，但非最小耦合不会导致暴胀场衰变为引力子对。 显示英文摘要

摘要： We point out that the inflaton inevitably couples to all non-conformally coupled matters gravitationally through an oscillation in the Hubble parameter or the cosmic scale factor. It leads to particle production during the inflaton oscillation regime, which is most efficient just after inflation. Moreover, the analysis is extended to the model with non-minimal inflaton couplings to gravity, in which the Hubble parameter oscillates more violently. We apply our results to the graviton production by the inflaton: gravitons are also produced just after inflation, but the non-minimal coupling does not induce inflaton decay into the graviton pair.