A time-symmetric closed-universe model is discussed in terms of the radiation arrow of time. The time symmetry requires the occurrence of advanced waves in the recontracting phase of the Universe. We consider the observational consequences of such advanced waves, and it is shown that a test observer in the expanding phase can observe a time-reversed image of a source of radiation in the future recontracting phase.
- PACS. 04.30. Gravitational waves and radiation: theory
- PACS. 98.80.Dr. Relativistic cosmology
ASJC Scopus subject areas
- Physics and Astronomy(all)