Dark matter may have originated before Big Bang, says study

A University of Texas at Austin theory proposes dark matter formed before the Big Bang during cosmic inflation. The model, called warm inflation via ultraviolet freeze-in (WIFI), suggests dark matter particles emerged from rare high-energy UV radiation interactions in the early universe. This challenges existing ideas about dark matter's origins and may impact theories on universe formation. The researchers believe their model could also explain the production of other particles crucial to the early universe's development.