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arXiv · 1803.09637

Connections between Minkowski and Cosmological Correlation Functions

Shek Kit Chu·Mang Hei Gordon Lee·Shiyun Lu·Xi Tong·Yi Wang·Siyi Zhou
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Abstract

We show how cosmological correlation functions of massless fields can be rewritten in terms of Minkowski correlation functions, by extracting symmetry-breaking operators from the cosmological correlators. This technique simplifies some cosmological calculations. Also, known properties of Minkowski correlation functions can be translated to non-trivial properties of cosmological correlations. To illustrate this idea, inflation to Minkowski and matter bounce to Minkowski relations are presented for the interactions of general single field inflation. And a Minkowski recursion relation is translated to a novel relation for inflation.

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Shek Kit Chu, Mang Hei Gordon Lee, Shiyun Lu, Xi Tong, Yi Wang, Siyi Zhou. 2018-03-26. Connections between Minkowski and Cosmological Correlation Functions. https://doi.org/10.1088/1475-7516%2F2018%2F06%2F001

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