Remarks on holography with broken Lorentz invariance

2009 ◽  
Vol 80 (12) ◽  
Author(s):  
Ivan Gordeli ◽  
Peter Koroteev
Keyword(s):  
Lorentz Invariance ◽  
Broken Lorentz Invariance

UNEXPECTED BEHAVIOR IN THE CROSSING OF MICROWAVE AND OPTICAL BEAMS

2005 ◽  
Vol 19 (27) ◽  
pp. 1403-1410 ◽  
Author(s):  
E. ALLARIA ◽  
R. MEUCCI ◽  
D. MUGNAI ◽  
A. RANFAGNI ◽  
C. RANFAGNI
Keyword(s):  
Lorentz Invariance ◽  
Point Of View ◽  
Experimental Results ◽  
Light Velocity ◽  
Broken Lorentz Invariance ◽  
Points Of View ◽  
Optical Beams ◽  
Definite Solution ◽  
Unexpected Behavior

The question of the superluminal speed of information was stopped at crossroads in the last few years. According to one point of view, this speed must be limited to the light velocity in vacuum, whereas a different point of view is more open in this respect and, under specific conditions, this limit is considered surmountable. Very recently, a third approach (based on the hypothesis of a local broken Lorentz-invariance) was proposed and, if confirmed, would go beyond the controversy of the two points of view mentioned above. It is therefore worthwhile to recall attention to this problem, which is far from having a definite solution. The present paper reports some experimental results (similar to those of Ref. 1) which can contribute to these discussions, and also considers the fact that they seem to give some support to the aforesaid third approach, although revised in terms of decaying waves.

scholarly journals Photon splitting bound on Lorentz Violation in QED from multi-TeV photon observation.

2018 ◽  
Vol 191 ◽  
pp. 02020
Author(s):  
Konstantin Astapov ◽  
Petr Satunin ◽  
Dmitry Kirpichnikov
Keyword(s):  
Quantum Electrodynamics ◽  
Crab Nebula ◽  
Lorentz Invariance ◽  
Lorentz Violation ◽  
Mass Scale ◽  
Special Model ◽  
Astrophysical Source ◽  
Broken Lorentz Invariance ◽  
Photon Splitting ◽  
The Crab Nebula

We calculate the width of photon splitting to three photons in a special model of quantum electrodynamics with broken Lorentz invariance. This process may lead to a sharp cut-off in a photon spectrum of a given astrophysical source. Analysing experimental data, we set a constraint on Lorentz-violating mass scale from the absence of such cut-off in the Crab Nebula spectrum.

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