The Shadow Life of the Cosmos: How the Dark Sector Leaves Traces on Ancient Light
A pond with ripples spreading from a fallen stone. So it is on cosmic scales: a sudden burst of energy in the dark sector, an invisible substance that emits no light, creates ripples in the fabric of space. These ripples alter the path of light particles traveling to us from the very birth of the cosmos.
The authors of the new study built a mathematical framework to describe these distortions.