The discussion revolves around the existence of time and space before the Big Bang, exploring various cosmological models and interpretations of the Big Bang itself. Participants examine theoretical implications, including the Hartle-Hawking no boundary proposal and the limitations of general relativity in describing conditions prior to the Big Bang.
Participants express a range of views, with no consensus on the nature of time and space before the Big Bang. Disagreements persist regarding the implications of various cosmological models and the interpretation of key terms.
Participants highlight limitations in current cosmological models, particularly regarding their ability to describe conditions prior to the Big Bang. The discussion reflects ongoing debates in theoretical physics about the nature of time, space, and the origins of the universe.
This sounds a lot like the Big Bounce.pines-demon said:I do not know if this has been brought out. There is this theory of Janus universes (as in Janus the god with two heads). Where basically from point ##t=0##, going forward in time gives a universe and rewinding back gives another universe. Similar to putting many gas particles in the corner of a box, you go forward in time the gas fills the box, you inverse the speed of all particles, the gas fills the box too.
I understand that he is referring to,DaveC426913 said:This sounds a lot like the Big Bounce.