标题： 辐射时期原初张量模式的一环修正 显示英文标题

标题： One-loop correction to primordial tensor modes during radiation era

摘要： 推导原初暴胀性质的能力依赖于在暴胀期间它们退出和辐射时代重新进入时的超视界扰动的守恒性。 对此性质的任何显著偏离都将需要重新解释数据。 这就是为什么理解超视界扰动如何与驱动辐射主导宇宙的热等离子体相互作用非常重要。 我们通过热态中的自由光子来模拟等离子体，并计算原初张量扰动功率谱的一圈修正。 这个修正随时间增长，并不被任何小参数抑制。 虽然一圈结果不可靠，因为它破坏了微扰理论，但它表明了可能有趣的效应，应进一步研究。 显示英文摘要

摘要： The ability to infer properties of primordial inflation relies on the conservation of the superhorizon perturbations between their exit during inflation, and their re-entry during radiation era. Any considerable departure from this property would require reinterpreting the data. This is why it is important to understand how superhorizon perturbations interact with the thermal plasma driving the radiation dominated Universe. We model the plasma by free photons in a thermal state and compute the one-loop correction to the power spectrum of primordial tensor perturbations. This correction grows in time and is not suppressed by any small parameter. While one-loop result is not reliable because it invalidates perturbation theory, it signals potentially interesting effects that should be investigated further.