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Lorentz invariance with an invariant energy scale.
We propose a modification of special relativity in which a physical energy, which may be the Planck energy, joins the speed of light as an invariant, in spite of a complete relativity of inertial…
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Gravity's Rainbow
. Non-linear special relativity (or doubly special relativity) is a simple framework for encoding properties of flat quantum space-time. In this paper we show how this formalism may be generalized to…
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A Time varying speed of light as a solution to cosmological puzzles
We consider the cosmological implications of light travelling faster in the early Universe. We propose a prescription for deriving corrections to the cosmological evolution equations while the speed…
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Generalized Lorentz invariance with an invariant energy scale
The hypothesis that the Lorentz transformations may be modified at Planck scale energies is further explored. We present a general formalism for theories which preserve the relativity of inertial…
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New varying speed of light theories
We review recent work on the possibility of a varying speed of light (VSL). We start by discussing the physical meaning of a varying-c, dispelling the myth that the constancy of c is a matter of…
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Examination of evidence for a preferred axis in the cosmic radiation anisotropy.
TLDR
It is found that the amount of power concentrated in planar modes for l = 2,3 is not inconsistent with isotropy and Gaussianity, but the multipoles' alignment is indeed anomalous and extends up to l = 5 rejecting statistical isotropy with a probability in excess of 99.9%.
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A simple cosmology with a varying fine structure constant.
TLDR
This model satisfies geonuclear, nucleosynthesis, and cosmic microwave background constraints on time variation in alpha, while fitting the observed accelerating Universe and evidence for small alpha variations in quasar spectra and specific restrictions on the nature of the dark matter.
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Covariant and locally Lorentz-invariant varying speed of light theories
We propose definitions for covariance and local Lorentz invariance applicable when the speed of light $c$ is allowed to vary. They have the merit of retaining only those aspects of the usual…
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Nonlinear relativity in position space
We propose a new method for obtaining the position space of nonlinear relativity, i.e., the dual of its usual momentum space formulation. We require that plane waves still be solutions to free field…
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Is the universe odd
We investigate the point-parity and mirror-parity handedness of the large angle anisotropy in the cosmic microwave background (CMB). In particular we consider whether the observed low CMB quadrupole…
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