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Quantum-gravity phenomenology, Lorentz symmetry, and the SME

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 نشر من قبل Ralf Lehnert
 تاريخ النشر 2007
  مجال البحث فيزياء
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 تأليف Ralf Lehnert




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Violations of spacetime symmetries have recently been identified as promising signatures for physics underlying the Standard Model. The present talk gives an overview over various topics in this field: The motivations for spacetime-symmetry research, including some mechanisms for Lorentz breaking, are reviewed. An effective field theory called the Standard-Model Extension (SME) for the description of the resulting low-energy effects is introduced, and some experimental tests of Lorentz and CPT invariance are listed.

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