In the cosmic mirror's gaze,
Quantum fields dance on space-time's stage.
Their paths entwine, like lovers' fates,
As nature weaves its quantum traits.
Aphrodite's beauty, vanity's delight,
Reflected in fields, shimmering bright.
Creating ripples in the cosmic sea,
Back-reacting on space, always free.
Oh, mirror mystical, hold their dance,
As quantum wonders unfold, enhance.
For in this realm of dreams and light,
We glimpse the secrets of day and night.
Title: Covariant path integrals for quantum fields back-reacting on classical space-time
Authors: Jonathan Oppenheim, Zachary Weller-Davies
View this paper on arXiv