Bounds on cubic Lorentz-violating terms in the fermionic dispersion relation

• Type: Article in International Scientific Journal
• Date: 2005

Authors

bertolami, o (Author) Other; rosa, jg (Author) Other

Journal

Title: Physical Review D - Particles, Fields, Gravitation and Cosmology

Vol. 71 No. 3

Pages: 1-4

ISSN: 1550-7998

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 21 Citations

Scopus - 23 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-000-3Q5

DOI: 10.1103/physrevd.71.097901

Abstract (EN): We study the recently proposed Lorentz-violating dispersion relation for fermions and show that it leads to two distinct cubic operators in the momentum. We compute the leading order terms that modify the nonrelativistic equations of motion and use experimental results for the hyperfine transition in the ground state of the Be-9(+) ion to bound the values of the Lorentz-violating parameters eta(1) and eta(2) for neutrons. The resulting bounds depend on the value of the Lorenz-violating background four-vector in the laboratory frame.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4