English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Neutrino oscillations: quantum mechanics vs. quantum field theory

MPS-Authors
/persons/resource/persons30246

Akhmedov,  Evgeny
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30706

Kopp,  Joachim
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

External Ressource
No external resources are shared
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Akhmedov, E., & Kopp, J. (2010). Neutrino oscillations: quantum mechanics vs. quantum field theory. Journal of High Energy Physics, 2010(4): 0008, pp. 1-41. Retrieved from http://www.springerlink.com/content/urh5241t46815005/fulltext.pdf.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0011-71BA-4
Abstract
A consistent description of neutrino oscillations requires either the quantum-mechanical (QM) wave packet approach or a quantum field theoretic (QFT) treatment. We compare these two approaches to neutrino oscillations and discuss the correspondence between them. In particular, we derive expressions for the QM neutrino wave packets from QFT and relate the free parameters of the QM framework, in particular the effective momentum uncertainty of the neutrino state, to the more fundamental parameters of the QFT approach. We include in our discussion the possibilities that some of the neutrino's interaction partners are not detected, that the neutrino is produced in the decay of an unstable parent particle, and that the overlap of the wave packets of the particles involved in the neutrino production (or detection) process is not maximal. Finally, we demonstrate how the properly normalized oscillation probabilities can be obtained in the QFT framework without an ad hoc normalization procedure employed in the QM approach.