09-24-2019, 10:46 AM
(09-22-2019, 05:24 PM)Manal Wrote: Source
For energy to be converted from one form to another, there must be at least two matter present at the time compatible enough for energy transfer to happen for which can cause creation/destruction of a matter.
No one says during the big bang, there had only one matter created throughout the process.
And about vacuum, I think we better refer to vacuum fluctuation, which is the current topic we all should be talking about.
Source.