1/ 📄 New paper’s out: we study phase coherence in primordial #cosmology.
The sharp acoustic peaks of the CMB and their late-time imprint in BAO require primordial perturbations to oscillate with extremely coherent phases.
What fixes this coherence? 🧵
arxiv.org/abs/2609.03012
arxiv.org
Universal CMB Phase Coherence from Single-Field Inflation
The phase coherence of primordial perturbations shapes the acoustic peaks of the CMB and is regarded as a key signature of inflation. Inflationary scenarios at different energy scales, thus with diffe...
