On the Positivity of Propagator Differences

On the Positivity of Propagator Differences
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论传播者差异的积极性

DOI:
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发表时间:
2014
期刊:
影响因子:
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通讯作者:
A. Vasy
A. Vasy
中科院分区:
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文献类型:
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作者:
A. Vasy

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我们讨论了某些“可分辨传播子”的正性质,即在散射理论和波传播中经常出现的算子的可分辨逆。我们将此与Duistermaat和Hörmander关于区分参数(近似逆)的工作联系起来,该工作最近在弯曲时空的量子场论中发挥了重要作用。
We discuss positivity properties of certain‘distinguished propagators’, i.e., distinguished inverses of operators that frequently occur in scattering theory and wave propagation. We relate this to the work of Duistermaat and Hörmander on distinguished parametrices (approximate inverses), which has played a major role in quantum field theory on curved spacetimes recently.