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21 papers · 1 filter
Spin precession and neutrino helicity flip under the influence of a gravitational plane wave
Reza Saadati, Fayçal Hammad
We recently studied spin precession in various stationary and axisymmetric spacetimes and applied it to the case of neutrinos propagating in those spacetimes. In this paper, the st…
Spin-1/2 particles under the influence of a uniform magnetic field in the interior Schwarzschild solution
Fayçal Hammad, Alexandre Landry, Parvaneh Sadeghi
The relativistic wave equation for spin-1/2 particles in the interior Schwarzschild solution in the presence of a uniform magnetic field is obtained. The fully relativistic regime…
Wave packet treatment of neutrino flavor oscillations in various spacetimes
P. Sadeghi, F. Hammad, A. Landry +1
We study the effect of gravity on neutrino flavor oscillations when each mass eigenstate is described by a wave packet instead of a plane wave. Two different approaches for impleme…
Influence of the dispersion relation on the Unruh effect according to the relativistic Doppler shift method
F. Hammad, A. Landry, D. Dijamco
We examine the influence of the dispersion relation on the Unruh effect by Lorentz boosting the phase of Minkowski vacuum fluctuations endowed with an arbitrary dispersion relation…
Fresh look at the effects of gravitational tidal forces on a freely-falling quantum particle
F. Hammad, P. Sadeghi, N. Fleury +1
We take a closer and new look at the effects of tidal forces on the free fall of a quantum particle inside a spherically symmetric gravitational field. We derive the corresponding…
What can we learn from the conformal noninvariance of the Klein-Gordon equation?
F. Hammad, P. Sadeghi, N. Fleury +1
It is well known that the Klein-Gordon equation in curved spacetime is conformally noninvariant, both with and without a mass term. We show that such a noninvariance provides nontr…