General considerations require that, if imaginary-mass matter can exist, then it will be present and coupled to the thermal gravitons in the early stages of the expansion of the Universe. This imaginary-mass component disappears abruptly as the expansion proceeds, a circumstance of great importance for the dynamics of the Universe. Estimates are given which indicate that this event would have occurred before the end of the hadron era.
ASJC Scopus subject areas
- Physics and Astronomy(all)