In January, Abhay Ashtekar posted a short preprint in which he (along with two collaborators) proposed a new solution to the so-called black hole information paradox in 1+1 dimensions. Their…
Solving the Black Hole Information "Paradox"
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Observationally Indistinguishable Dark-Energy Theories
Fundamentally different theories of dark energy may be underdetermined by observation, according to a recent preprint by Sanil Unnikrishnan. Background. Dark energy was first proposed as a solution to the…
Is the cosmological metric about to flip Euclidean?
The ‘wildest excuse for cosmic acceleration’ prize so far should go, in my view, to these guys. They argue that the metric form of spacetime is about to flip from…