Lorentz invariance and quantum gravity

An additional fine-tuning problem?

John C. Collins, Alejandro Perez, Daniel Sudarsky, Luis Urrutia, Héctor Vucetich

Research output: Contribution to journalArticle

208 Citations (Scopus)

Abstract

The elementary particle interactions with a Planck-scale preferred frame, which gives rise to Lorentz violation and are unnaturally strongly fine tuned, were investigated. It was found that direct investigations of Planck-scale phenomena need short-wavelength probes with elementary-particle energies of order the Planck energy Ep = (hc5/G)1/2 = 1.2 x 1019 GeV. The preferred frame and the consequent Lorentz violation occurred even though the fundamental classical equations of both of the theories were locally Lorentz invariant. The results show that the Lorentz violation can be removed by explicit Lorentz-violating counterterms that are fine tuned to give the observed low-energy Lorentz invariance.

Original languageEnglish (US)
JournalPhysical Review Letters
Volume93
Issue number19
DOIs
StatePublished - Nov 5 2004

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invariance
elementary particle interactions
tuning
gravitation
elementary particles
particle energy
energy
probes
wavelengths

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Collins, John C. ; Perez, Alejandro ; Sudarsky, Daniel ; Urrutia, Luis ; Vucetich, Héctor. / Lorentz invariance and quantum gravity : An additional fine-tuning problem?. In: Physical Review Letters. 2004 ; Vol. 93, No. 19.
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Lorentz invariance and quantum gravity : An additional fine-tuning problem? / Collins, John C.; Perez, Alejandro; Sudarsky, Daniel; Urrutia, Luis; Vucetich, Héctor.

In: Physical Review Letters, Vol. 93, No. 19, 05.11.2004.

Research output: Contribution to journalArticle

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