| Issue |
EPJ Web Conf.
Volume 240, 2020
The 11th Southeast Asia Astronomy Networking Meeting (SEAAN Meeting 2019)
|
|
|---|---|---|
| Article Number | 07010 | |
| Number of page(s) | 5 | |
| Section | Posters/Flash Talks | |
| DOI | https://doi.org/10.1051/epjconf/202024007010 | |
| Published online | 21 August 2020 | |
https://doi.org/10.1051/epjconf/202024007010
Nonlinear Dirac Neutrino Oscillations
National University of Singapore Department of Physics, 21 Lower Kent Ridge Rd, Singapore 119077
* e-mail: zhihao.quek16@sps.nus.edu.sg
Published online: 21 August 2020
Neutrino oscillations are a possible way to probe beyond Standard Model physics. The propagation of Dirac neutrinos in a massive medium is governed by the Dirac equation modified with an effective Hamiltonian that de- pends on the number density of surrounding matter fields. At the same time, quantum nonlinearities may contribute to neutrino oscillations by further mod- ifying the Dirac equation. A possible nonlinearity is computationally studied using Mathematica at low energies. We find that the presence of a uniform, static background matter distribution may significantly alter the oscillation am- plitude and wavelength; the considered nonlinearity may further reduce both oscillation amplitude and wavelength. In addition, the presence of matter al- lows the effects of the nonlinearity to be more readily observed for the chosen background densities and neutrino energy.
© The Authors, published by EDP Sciences, 2020
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