Stability, Causality, and Lorentz and CPT Violation

Details Stability, Causality, and Lorentz and CPT Violation Stability, Causality, and Lorentz and CPT Violation

2000-12-07

arxiv.org/abs/hep-th/0012060v1

Phys.Rev.D63:065008,2001

Physics

High Energy Physics

High Energy Physics - Theory

20 pages, accepted for publication in Physical Review D

Scientific paper

10.1103/PhysRevD.63.065008

Stability and causality are investigated for quantum field theories incorporating Lorentz and CPT violation. Explicit calculations in the quadratic sector of a general renormalizable lagrangian for a massive fermion reveal that no difficulty arises for low energies if the parameters controlling the breaking are small, but for high energies either energy positivity or microcausality is violated in some observer frame. However, this can be avoided if the lagrangian is the sub-Planck limit of a nonlocal theory with spontaneous Lorentz and CPT violation. Our analysis supports the stability and causality of the Lorentz- and CPT-violating standard-model extension that would emerge at low energies from spontaneous breaking in a realistic string theory.

Affiliated with

Also associated with

No associations

Rating

Stability, Causality, and Lorentz and CPT Violation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Stability, Causality, and Lorentz and CPT Violation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stability, Causality, and Lorentz and CPT Violation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-579408