News for hackers. Stuff that matters.
Re:Dark energy from supermassive black holes? Physicists spa... by cowl on Wednesday February 22, 2023 @08:53AM (#34895451)
Well the whole idea is to "make it work" under the constrains of our current understanding (General Relativity). After all , all that Dark Energy is by definition is something that is Contrasting the Gravity as described by general Relativity. If we remove that fact than it doesn't need to be reconciled with anything really. Saying that it is a type of energy that doesn't behave according to general Relativity, you need to solve a much bigger problem, find the Substitute of General Relativity that would work for all cases and in that scenario maybe even Gravity is different and you don't even need Dark Energy.
Re:Dark energy from supermassive black holes? Physicists spa... by jdmichal on Wednesday February 22, 2023 @12:30PM (#34899233)
Are there MOND theories that attempt to account for dark energy too? Or only dark matter?
Re:Dark energy from supermassive black holes? Physicists spa... by mr_mitm on Thursday February 23, 2023 @02:29AM (#34907852)
Not that I'm aware, but there are modified GR theories. In classical GR, the equations can be derived by applying the principle of least action with the Ricci scalar R being the Langrangian. People are studying what happens if you assume the Lagrangian is a function of R, like R^n or so. It doesn't have the same stigma as MoND, but it's also not that popular. It's also very hard to test for.

https://en.wikipedia.org/wiki/F(R)_gravity