Zobrazeno 1 - 10
of 171
pro vyhledávání: '"Alkhateeb, M."'
We study space-time resolved densities of particle-hole pairs produced by an external time-dependent field acting on non-interacting non-relativistic particles. It is shown that, at least in some cases, the densities are not affected by Fermi-Dirac o
Externí odkaz:
http://arxiv.org/abs/2407.13905
We investigate relativistic wavepacket dynamics for an electron tunneling through a potential barrier employing space-time resolved solutions to relativistic quantum field theory (QFT) equations. We prove by linking the QFT property of micro-causalit
Externí odkaz:
http://arxiv.org/abs/2407.07160
Autor:
Alkhateeb, M., Matzkin, A.
Publikováno v:
Phys. Rev. A 109, 062223 (2024)
We investigate the construction of spin-1/2 fermionic and spin-0 bosonic wave-packets having compact spatial support in the framework of a computational quantum field theory (QFT) scheme offering space-time solutions of the relativistic wave equation
Externí odkaz:
http://arxiv.org/abs/2402.11132
Autor:
Alkhateeb, M., Matzkin, A.
Publikováno v:
Found. Phys. 52, 104 (2022)
It is generally believed that the de Broglie-Bohm model does not admit a particle interpretation for massive relativistic spin-0 particles, on the basis that particle trajectories cannot be defined. We show this situation is due to the fact that in t
Externí odkaz:
http://arxiv.org/abs/2207.14646
Autor:
Alkhateeb, M., Matzkin, A.
Publikováno v:
Phys. Rev. A 106, L060202 (2022)
We investigate Klein tunneling through finite potential barriers with space-time resolved solutions to relativistic quantum field equations. We find that no particle actually tunnels through a finite supercritical barrier, even in the case of resonan
Externí odkaz:
http://arxiv.org/abs/2205.15119
Publikováno v:
Scientific Reports, 10:19225 (2020) Sci. Rep. (2020) 10:19225
We analyse a little known aspect of the Klein paradox. A Klein-Gordon boson appears to be able to cross a supercritical rectangular barrier without being reflected, while spending there a negative amount of time. The transmission mechanism is demonst
Externí odkaz:
http://arxiv.org/abs/2107.09374
Autor:
Alkhateeb, M., Matzkin, A.
Publikováno v:
Am. J. Phys. 90, 297 (2022)
The "particle in a box" problem is investigated for a relativistic particle obeying the Klein-Gordon equation. To find the bound states, the standard methods known from elementary non-relativistic quantum mechanics can only be employed for "shallow"
Externí odkaz:
http://arxiv.org/abs/2103.06538
We carry out a phenomenological and analytical study of the texture structures for the Majorana neutrino mass matrix characterized by one single equality between two independent matrix elements, with vanishing non-physical phases whose role in the de
Externí odkaz:
http://arxiv.org/abs/2102.08326
Publikováno v:
Phys. Rev. A 103, 042203 (2021)
We investigate wavepacket dynamics across supercritical barriers for the Klein-Gordon and Dirac equations. Our treatment is based on a multiple scattering expansion (MSE). For spin-0 particles, the MSE diverges, rendering invalid the use of the usual
Externí odkaz:
http://arxiv.org/abs/2012.02725
Publikováno v:
Phys. Rev. D 103, 035020 (2021)
We consider a texture for the neutrino mass matrix characterized by one vanishing $2\times2$ subtrace. We analyze phenomenologically and analytically all the six possible patterns, and show that all non-singular ones are able to accommodate the exper
Externí odkaz:
http://arxiv.org/abs/2006.10888