So everything will expand and then contract to either a point of nothingness or a point of re-initiation.
1} Zed, as soon as you use the word ' everything ', your invoking/inferreing a finite set. So infinite things becomes moot with such comments.
2} you seem to believe the 1st law of thermodynamics is not truly a eternally existent meta-space cosmic physical law, when in fact, humans have no { zilch } evidence such physical law ever being violated anywhere,
3} GRelativity maths ---primarily exist Schwarzchild's static math's--- because, if followed to the extreme, leads to photon trajectories inside a black hole becoming incomplete, null geodesics aka singularities. Gone from Universe etc
Einstein did not believe such extreme celestial black holes existed.
AI..." Birkhoff's theorem states that any spherically symmetric vacuum solution of the Einstein field equations is necessarily static and stationary, meaning the Schwarzschild solution is the most general such solution "...
This is why the Roy Kerr the father of the math for rotating black hole states, all black holes are rotating and all scientists know this yet carry on with these static mathematical black holes as if they actually exist, when no such static black holes exist. Roy Kerr goes on to show dynamics of rotating black holes, the photon trajectory in a black hole does not come to incomplete null geodesic singularity.
He also states, that, singuarlities in black holes may exist, only that his maths do not invoke such, and he dosent know that singularities do not exist.
AI..." Singularity:
While the Kerr solution predicts a ring singularity, recent research suggests that this singularity may not be physically real "
A ring singularity just means the photon trajectory goes on in a circle forever, or at least until the BH evaporates via Hawking Radiation.
String theory's AdS/CFT, ----Maldacena's AdS/CFT correspondence---- ..." On the “AdS” side, we have a theory of quantum gravity in D-dimensions, whose geometry is asymptotically Anti de-Sitter space (AdS), a hyperbolic space with constant negative curvature.
....On the “CFT” side we have a conformal field theory (CFT) living in (D-1)-dimensions at the (flat) boundary of the AdS geometry. A conformal field theory is a quantum field theory that, roughly speaking, behaves in exactly the same way at all scales.
.....All of the information in the quantum gravity theory is encoded within the lower-dimensional (and non-gravitational) CFT living at the boundary)
As redditor gerglo says, the "extra" dimension is a result of the entanglement structure in the CFT "..
