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Apr
4
comment Merger happening tangentially, but dark matter at both sides?
conformal Weyl gravity and some other variants do MONDesque predictions like Tully-Fisher, but what they don't explain is the Bullet Cluster weak lensing pattern
Apr
4
accepted Merger happening tangentially, but dark matter at both sides?
Apr
4
comment Merger happening tangentially, but dark matter at both sides?
ah, should have known better than not following to the source. In fact, sec. 4.1 mentions that there is no actual weak lensing map, so their dark matter map is just guesswork
Apr
4
asked Merger happening tangentially, but dark matter at both sides?
Mar
18
comment Computing the Einstein tensor for a spherically symmetrical metric using the tetrad formalism
multiply the no-torsion condition to the left against a one-form with a new labeled index $\theta^c$ and use the properties of the wedge product
Mar
18
revised CMB curly B-modes and dark matter
edited title
Mar
18
revised CMB curly B-modes and dark matter
deleted 4 characters in body
Mar
18
asked CMB curly B-modes and dark matter
Mar
18
comment Another question about wormhole traversability in General Relativity
so, I don't get it; it is the same metric, but the geodesics are 'interpreted' differently? I don't see any 'shift' that you mention, is the same Schwarzschild-Einstein-Rosen metric
Mar
13
revised Measurements for thermal diffusivity of graphene?
added 5 characters in body
Mar
13
asked Measurements for thermal diffusivity of graphene?
Mar
13
comment Material implementations of the holographic principle
Basically I'm interested in some analog computing mechanism to evaluate the map between the bulk states and the surface states
Mar
13
comment Material implementations of the holographic principle
For instance; what if the bulk volume inside the graphene closed surface would made of a substance with some effective field described by the limit of some gravitational theory? (I'm thinking in fluid dynamics analogs, for example). Are you saying that under no conditions would the charge carriers in the boundary couple with the dynamics in the bulk fluid such that the whole dynamics would be approximately described by AdS/CFT?
Mar
13
comment Material implementations of the holographic principle
I have the hope that both Gauss theorem and Stokes theorem are somehow limits of complex symmetries represented by AdS/CFT. I agree that the duality is merely mathematical, but maybe there is some way to make it physical?
Feb
7
answered Another question about wormhole traversability in General Relativity
Feb
6
asked Another question about wormhole traversability in General Relativity
Jan
26
awarded  Announcer
Jan
25
awarded  Necromancer
Jan
7
awarded  Nice Question
Jan
6
revised Vacuum polarization of dark matter candidates
added 12 characters in body