12 papers
Lorentz Violation in Emergent Gravity and Its Cosmological Consequences
Raymond Isichei, Joao Magueijo
We show that General Relativity and other geometrical theories can be viewed as a degenerate Otto cycle with only heat-exchange legs in emergent gravity. Including work-producing l…
Quantum dynamics and thermodynamics of a Minkowski-Minkowski wormhole
Johanna Borissova, João Magueijo
We consider the path-integral quantization of a minisuperspace cut-and-paste Lorentzian wormhole connecting two Minkowski spacetimes. The dynamics of the throat radius as a functio…
Thermodynamics in space-times without horizons
Raymond Isichei, João Magueijo
We consider the energetics and thermodynamics of spacetimes with no horizons, but endowed with a preferred timelike junction surface. They could arise as a limiting case of the gra…
Attracting without being attracted: Dark Matter as an aether wind
Raymond Isichei, Joao Magueijo
We explore the possibility that part of what we call dark matter may be the mark of a preferred frame, revealing a breakdown of diffeomorphism invariance. In the non-relativistic l…
Quantum wormholes at spatial infinity
João Magueijo, Ganga Singh Manchanda
We derive the interesting result that the two asymptotically flat Universes classically linked by the Einstein-Rosen bridge may also be quantum mechanically connected in their far…
The Mystery of Alpha and the Isotopes
John K. Webb, Chung-Chi Lee, Dinko Milakovic +3
We report unbiased AI measurements of the fine structure constant in two proximate absorption regions in the spectrum of the quasar HE05154414. The data are high resolution…