Non-dispersive DSR (personal view of Jerzy K-G)

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A recent paper of Jerzy K-G has this footnote on page 7, at the conclusion:

"3. Beware! These answers reflect my personal understanding and views, and may not be shared by other experts!"

I have the impression that K-G's view of DSR (that it is non-dispersive and does not predict energy dependence of the speed of light) may be gaining adherents.
I think I remember seeing something about this in a paper co-authored with Freidel. Kowalski-Glikman has been saying this for several years at least. I saw the view in a paper of his from several years back.

Here is what he says in the conclusions of this recent paper, on page 7:


Are there any deviations from Special Relativity predicted by DSR,
which can be observed in experiments in a foreseeable future? The field
theory presented above strongly suggest that there should be no such ob-
servable effects in cosmic rays (the predictions of DSR for both GLAST and
Pierre Auger signals seem to be effectively zero.) But there might be inter-
esting deviations for large quantum systems of energies close to the Planck
one, see [21] for the concrete proposal.


and the reference is to this paper:
[21] J. Magueijo, “Could quantum gravity be tested with high intensity
lasers?,” Phys. Rev. D 73 (2006) 124020 [arXiv:gr-qc/0603073].

Here is the K-G paper:
http://arxiv.org/abs/hep-th/0612280
Doubly Special Relativity at the age of six
Jerzy Kowalski-Glikman
To appear in the Proceedings of 22nd Max Born Symposium

"The current status of Doubly Special Relativity research program is shortly presented.
I dedicate this paper to my teacher and friend Professor Jerzy Lukierski on occasion of his seventieth birthday."
 

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