论文标题
关于宇宙学扰动的绝热减法
On the adiabatic subtraction of cosmological perturbations
论文作者
论文摘要
绝热减法是在弯曲时空中量子场理论中可观察力的重新归一化的流行方法。当将光谱（$ m \ ll H $）田地的功率光谱应用于平坦的弗里德曼·莱玛·罗伯逊 - 罗伯逊 - 步行者切片时，当绝热减法的标准处方，可追溯到帕克工作的标准处方，导致结果与不仅与Ultraviolet的标准预测相比，与$ k的标准预测相比（$ m \ ll k/a \ Lessim H $）波长。在本文中，我们回顾了这些结果，并将它们与使用Dabrowski和Dunne应用于量子场理论系统的绝热减法的替代处方获得的功率光谱进行了对比。该处方消除了使用标准范围时发现的重新归一化的中间波长效应。
Adiabatic subtraction is a popular method of renormalization of observables in quantum field theories on a curved spacetime. When applied to the computation of the power spectra of light ($m\ll H$) fields on de Sitter space with flat Friedmann-Lemaître-Robertson-Walker slices, the standard prescriptions of adiabatic subtraction, traceable back to Parker's work, lead to results that are significantly different from the standard predictions of inflation not only in the ultraviolet ($k\gg aH$) but also at intermediate ($m\ll k/a\lesssim H$) wavelengths. In this paper we review those results and we contrast them with the power spectra obtained using an alternative prescription for adiabatic subtraction applied to quantum field theoretical systems by Dabrowski and Dunne. This prescription eliminates the intermediate-wavelength effects of renormalization that are found when using the standard one.
