Description
We propose the experimental simulation of cosmological perturbations governed by a Planck-scale induced Lorentz violating dispersion, aimed at distinguishing between early-universe models that generate a scale-invariant power spectrum. Employing a novel variant of the scaling approach for the evolution of a Bose-Einstein condensate with both contact and dipolar interactions, we capture the hitherto unobserved phenomenon of trans-Planckian damping. We show that Wands’ duality is subsequently broken via a spectral tilt at small scales for inflation, and at large scales for the initial collapse phase of bounce. With this, we demonstrate how cold-atom experiments can help isolate potential low-energy signatures of Planck-scale physics in the power spectrum, and in turn, help reinterpret current observations of the Cosmic Microwave Background. [Refs: https://doi.org/10.1140/epjc/s10052-025-15187-6]