No time to derive: unraveling total time derivatives in in-in perturbation theory
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DOI: 10.1007/jhep08(2024)068
Abstract: The in-in formalism provides a way to systematically organize the calculation of primordial correlation functions. Although its theoretical foundations are now firmly settled, the treatment of total time derivative interactions, incorrectly trivialized as “boundary terms”,… read more here.
Keywords: time derive; time; correlation functions; time derivatives ... See more keywords