Cutting rule for in-in correlators and cosmological collider
Abstract We derive a cutting rule for equal-time in-in correlators including cosmological correlators based on Keldysh r/a basis, which decomposes diagrams into fully retarded functions and cut-propagators consisting of Wightman functions. Our derivation relies only on basic assumptions such as unit...
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Main Authors: | , |
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Format: | Article |
Language: | English |
Published: |
SpringerOpen
2024-12-01
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Series: | Journal of High Energy Physics |
Subjects: | |
Online Access: | https://doi.org/10.1007/JHEP12(2024)194 |
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