Anonymous
6/10/2025, 10:43:19 AM No.16694075
Are white holes possible without violating the laws of thermodynamics? Whats the math behind them if they can?
Replies:
White holes - /sci/ (#16694075) [Archived: 1218 hours ago]
Anonymous
6/10/2025, 1:18:17 PM No.16694127
>>16694075 (OP)
>Whats the math behind them
People flip the sign of time in EFE solutions because time reversal is one of the symmetries of the Poincare group
>thermodynamics
There’s a whole different notion of “thermodynamic time” (most often taken to be the inverse of temperature) that’s unrelated to the “geometric” time of general relativity. People in the GR community have tons of debates about whether they’re actually related or not, so your question is an open one.
>Whats the math behind them
People flip the sign of time in EFE solutions because time reversal is one of the symmetries of the Poincare group
>thermodynamics
There’s a whole different notion of “thermodynamic time” (most often taken to be the inverse of temperature) that’s unrelated to the “geometric” time of general relativity. People in the GR community have tons of debates about whether they’re actually related or not, so your question is an open one.