Lorentz invariance and quantum gravity: an additional fine-tuning problem?
Trying to combine standard quantum field theories with gravity leads to a breakdown of the usual structure of space time at around the Planck length, 1.6 × 10⁻³⁵ m , with possible violations of Lorentz invariance. Calculations of preferred-frame effects in quantum gravity have further motivated high...
| Autores principales: | , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2004
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/126251 |
| Aporte de: |
| id |
I19-R120-10915-126251 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Física Physics Lorentz factor Hořava–lifshitz gravity Moving magnet and conductor problem Velocity-addition formula Theoretical physics Quantum mechanics Cpt symmetry Vacuum expectation value Lorentz covariance Test theories of special relativity |
| spellingShingle |
Física Physics Lorentz factor Hořava–lifshitz gravity Moving magnet and conductor problem Velocity-addition formula Theoretical physics Quantum mechanics Cpt symmetry Vacuum expectation value Lorentz covariance Test theories of special relativity Collins, John Pérez, Alejandro Sudarsky, Daniel Urrutia, Luis F. Vucetich, Héctor Lorentz invariance and quantum gravity: an additional fine-tuning problem? |
| topic_facet |
Física Physics Lorentz factor Hořava–lifshitz gravity Moving magnet and conductor problem Velocity-addition formula Theoretical physics Quantum mechanics Cpt symmetry Vacuum expectation value Lorentz covariance Test theories of special relativity |
| description |
Trying to combine standard quantum field theories with gravity leads to a breakdown of the usual structure of space time at around the Planck length, 1.6 × 10⁻³⁵ m , with possible violations of Lorentz invariance. Calculations of preferred-frame effects in quantum gravity have further motivated high precision searches for Lorentz violation. Here, we explain that combining known elementary particle interactions with a Planck-scale preferred frame gives rise to Lorentz violation at the percent level, some 20 orders of magnitude higher than earlier estimates, unless the bare parameters of the theory are unnaturally strongly fine tuned. Therefore an important task is not just the improvement of the precision of searches for violations of Lorentz invariance, but also the search for theoretical mechanisms for automatically preserving Lorentz invariance. |
| format |
Articulo Articulo |
| author |
Collins, John Pérez, Alejandro Sudarsky, Daniel Urrutia, Luis F. Vucetich, Héctor |
| author_facet |
Collins, John Pérez, Alejandro Sudarsky, Daniel Urrutia, Luis F. Vucetich, Héctor |
| author_sort |
Collins, John |
| title |
Lorentz invariance and quantum gravity: an additional fine-tuning problem? |
| title_short |
Lorentz invariance and quantum gravity: an additional fine-tuning problem? |
| title_full |
Lorentz invariance and quantum gravity: an additional fine-tuning problem? |
| title_fullStr |
Lorentz invariance and quantum gravity: an additional fine-tuning problem? |
| title_full_unstemmed |
Lorentz invariance and quantum gravity: an additional fine-tuning problem? |
| title_sort |
lorentz invariance and quantum gravity: an additional fine-tuning problem? |
| publishDate |
2004 |
| url |
http://sedici.unlp.edu.ar/handle/10915/126251 |
| work_keys_str_mv |
AT collinsjohn lorentzinvarianceandquantumgravityanadditionalfinetuningproblem AT perezalejandro lorentzinvarianceandquantumgravityanadditionalfinetuningproblem AT sudarskydaniel lorentzinvarianceandquantumgravityanadditionalfinetuningproblem AT urrutialuisf lorentzinvarianceandquantumgravityanadditionalfinetuningproblem AT vucetichhector lorentzinvarianceandquantumgravityanadditionalfinetuningproblem |
| bdutipo_str |
Repositorios |
| _version_ |
1764820450247966720 |