“…[25,26] for example applications), and in recent years there has been an upsurge in activity aiming to extend it e.g. to beyond leading order in the coupling [22,27,28], the slow-roll approximation [16,29], or to include derivative interactions [30]. However, compared to its extensive use, studies of the embedding and range of validity of the stochastic approach in QFT remain scarce (see however [31,32]), which has motivated the present work.…”