Work

Lorentz Violation Dispersion Relation and Its Application

Year: 2009

Type: article

Abstract: We derive a modified dispersion relation (MDR) in the Lorentz violation extension of the quantum electrodynamics (QED) sector in the standard model extension (SME) framework. Based on the extended Dirac equation and corresponding MDR, we observe the resemblance of the Lorentz violation coupling to spin–gravity coupling. We also develop a neutrino oscillation mechanism induced by the presence of nondiagonal terms of Lorentz violation couplings in two-flavor space in a two-spinor formalism by explicitly assuming neutrinos to be Marjorana fermions. We also obtain a very stringent bound (∽ 10 -25 ) on one of the Lorentz violation parameters by applying the MDR to the ultrahigh energy cosmic ray (UHECR) problem.

Source: International Journal of Modern Physics A

DOI: 10.1142/s0217751x09042955

Authors: ZHI XIAO, BO-QIANG MA

Institutions: Peking University, State Key Laboratory of Nuclear Physics and Technology

Language: English

Topic: Noncommutative and Quantum Gravity Theories

Subfield: Statistical and Nonlinear Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Natural Science Foundation of China, Specialized Research Fund for the Doctoral Program of Higher Education of China

Awards: G1255475363, G431643519, G5692465560