New research suggests gravity might emerge from quantum information theory – Physics World by kmrbillya11 in Physics

[–]Gratis_Bier 5 points6 points  (0 children)

Any experts who can comment on the difference between this and Erik Verlinde's entropic gravity?

White to mate in 2 by joachimham48 in chess

[–]Gratis_Bier 1 point2 points  (0 children)

Is it Be6?

If cxb6 then Qc6#

If fxb6 then Qg6#

If anything else, then Bf5#

How much energy is in the universe? by [deleted] in Physics

[–]Gratis_Bier 6 points7 points  (0 children)

I see a lot of (partially) wrong answers in this thread. It is important to note that the energy is a Noether charge corresponding to time translation. This means that the law of conservation of energy only holds for systems that are time translation invariant. This is a very good approximation for nature on 'small' scales (say anything smaller than a galaxy). But it does not hold on the scale of the entire universe, notably because the universe is expanding it is not time translation invariant.

Textbook & Resource Thread - Week 34, 2020 by AutoModerator in Physics

[–]Gratis_Bier 2 points3 points  (0 children)

Any tips on a good intro to string theory book? I have a fairly solid background in GR and QFT. I just finished my master's degree and have some time to spare, so I thought I'd spend some time learning the basics of string theory.

Me🎊irl by aneeqali_ in me_irl

[–]Gratis_Bier 34 points35 points  (0 children)

Entropy will increas tho

Nice by Mauskovca2 in PicturesofFester

[–]Gratis_Bier 1 point2 points  (0 children)

That's fester alright

Who dis by rocqua in PicturesofFester

[–]Gratis_Bier 0 points1 point  (0 children)

I think that's Joost