Quantum Fields from Global Propagators on Asymptotically Minkowski and Extended de Sitter Spacetimes
Quantum Fields from Global Propagators on Asymptotically Minkowski and Extended de Sitter Spacetimes
复制标题
渐近闵可夫斯基和扩展德西特时空上的全局传播器的量子场
DOI:
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发表时间:
2015
期刊:
影响因子:
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通讯作者:
M. Wrochna
中科院分区:
文献类型:
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作者:
A. Vasy;M. Wrochna
We consider the wave equation on asymptotically Minkowski spacetimes and the Klein–Gordon equation on even asymptotically de Sitter spaces. In both cases, we show that the extreme difference of propagators (i.e., retarded propagator minus advanced, or Feynman minus anti-Feynman), defined as Fredholm inverses, induces a symplectic form on the space of solutions with wave front set confined to the radial sets. Furthermore, we construct isomorphisms between the solution spaces and symplectic spaces of asymptotic data. As an application of this result, we obtain distinguished Hadamard two-point functions from asymptotic data. Ultimately, we prove that non-interacting Quantum Field Theory on asymptotically de Sitter spacetimes extends across the future and past conformal boundary, i.e., to a region represented by two even asymptotically hyperbolic spaces. Specifically, we show this to be true both at the level of symplectic spaces of solutions and at the level of Hadamard two-point functions.
DOI:
10.4171/037
发表时间:
2007-03
期刊:
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影响因子:
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作者:
Christian Baer;N. Ginoux;Frank Pfaeffle
通讯作者:
Christian Baer;N. Ginoux;Frank Pfaeffle