论文标题
de Sitter中的波函数/S-矩阵技术
Wavefunctionals/S-matrix techniques in de Sitter
论文作者
论文摘要
扁平空间物理学受到基本原理的高度限制，例如洛伦兹的不变性，地方性，单位性和因果关系。这在散射幅度的结构中巧妙地看到。对于在不断扩展的背景中发生的过程，我们没有相同的理解水平，甚至在DE Sitter空间的情况下也没有。在本次演讲中，我简要说明了最近的一些旨在填补这一空白的努力。我将讨论一些新的结果，以理解在扰动制度中宇宙束界波函数（AL）的分析结构，这是它应该满足的一些基本约束以及一些来自潜在组合结构的一般见解。
Flat-space physics is highly constrained by basic principles such as Lorentz invariance, locality, unitarity and causality. This is neatly seen in the structure of scattering amplitudes. For processes occurring in an expanding background we do not have the same level of understanding, not even in the case of de Sitter space. In this talk I provide a brief account of some of the recent efforts which aim to fill this gap. I will discuss some novel results in the understanding of the analytic structure of the Bunch-Davies wavefunction(al) of the universe in the perturbative regime, some fundamental constraints that it ought to satisfy as well as some general insights coming from an underlying combinatorial structure.
