标题： BICEP2 在暴胀的粒子描述中 显示英文标题

标题： BICEP2 in Corpuscular Description of Inflation

摘要： 粒子量子描述显示，对于暴胀场来说，达到约100个普朗克质量的超普朗克尺度运动并没有根本性问题，上限来自于粒子量子效应。 在这种描述中，r参数衡量的是引力子与暴胀子占据数的比值，根据BICEP2的数据，在暴胀结束前60个e折叠时期，这个比值大约是二分之一。 我们强调，在非威耳逊紫外自完成的重力理论中，任何与暴胀子耦合的超普朗克模式都是黑洞。 与威耳逊情况不同，它们的积分出去会产生指数抑制效应，并不能阻止暴胀子场的超普朗克尺度运动。 显示英文摘要

摘要： A corpuscular quantum description of inflation shows that there is no fundamental problem with trans-Planckian excursions of the inflaton field up to about 100 Planck masses, with the upper bound coming from the corpuscular quantum effects. In this description the r-parameter measures the ratio of occupation numbers of gravitons versus inflatons, which, according to BICEP2, was roughly a half at the time of 60 e-foldings prior to the end of inflation. We stress that in non-Wilsonian UV self-completion of gravity any trans-Planckian mode coupled to inflaton is a black hole. Unlike the Wilsonian case, their integration-out gives an exponentially-suppressed effect and is unable to prevent trans-Planckian excursions of the inflaton field.