Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Zofia Bialynicka-Birula"'
Publikováno v:
Physics, Vol 5, Iss 3, Pp 862-872 (2023)
In this paper we extend the Zeldovich formula, which was originally derived for the free electromagnetic field and was interpreted as the number of photons. We show that our extended formula gives a universal dimensionless measure of the overall stre
Externí odkaz:
https://doaj.org/article/30c8e8c61f6042bc9a7bfa4e6e699218
Publikováno v:
Physical Review Research, Vol 2, Iss 3, p 038001 (2020)
In our Comment we question the validity of the claim made by Campos and Cabrera [Phys. Rev. Res. 2, 013051 (2020)2643-156410.1103/PhysRevResearch.2.013051] that their solutions of the Dirac equation in an external time-dependent electromagnetic field
Externí odkaz:
https://doaj.org/article/783610138a294f77a73ff7ade88d9513
Publikováno v:
New Journal of Physics, Vol 21, Iss 7, p 073036 (2019)
The Heisenberg uncertainty relation is derived for relativistic electrons described by the Dirac equation. The standard nonrelativistic lower bound 3/2ℏ is attained only in the limit and the wave function that reproduces this value is singular. At
Externí odkaz:
https://doaj.org/article/02d6bc62788e4072a38e841a69795d65
Publikováno v:
New Journal of Physics, Vol 21, Iss 11, p 119502 (2019)
Externí odkaz:
https://doaj.org/article/8acc0d3c25b44117b5cfc708977ab67d
Publikováno v:
New Journal of Physics, Vol 18, Iss 2, p 023022 (2016)
Spinorial formalism is used to map every electromagnetic wave into the gravitational wave (within the linearized gravity). In this way we can obtain the gravitational counterparts of Bessel, Laguerre-Gauss, and other light beams carrying orbital angu
Externí odkaz:
https://doaj.org/article/c9137a4732174aad9829e41e82df690c
Publikováno v:
Journal of Physics A: Mathematical and Theoretical. 56:138001
We present further arguments which show that the backflow has a universal character. It is not restricted to quantum theory and it appears in many theories (quantum or classical). It is a general property of waves propagating in any number of dimensi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::04d2ab2d1d164a8846ed688a3bc06172
https://doi.org/10.1088/1751-8121/acbd72
https://doi.org/10.1088/1751-8121/acbd72
We show that, contrary to the statements made by many authors, the backflow is not a nonclassical effect. The backflow is a characteristic feature of solutions of the wave equations: quantum and classical. We present simple solutions of the Dirac equ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::36dd789481a7fd029b603558d785e428
It is shown that the interpretation of the electron wave function as a classical field is untenable because the so called energy-density defined in \cite{seb} takes on negative values in some regions. The claim that the velocity of the electron never
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e09a8e9d370c8a22afcb707a2ec3eeae
http://arxiv.org/abs/2105.07726
http://arxiv.org/abs/2105.07726
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 55:114001
Ehrenfest theorem is proven in relativistic quantum theory of charged particles, moving under the influence of an external electromagnetic field. In order to extend the classic Ehrenfest result to the relativistic domain we bypassed the problems with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::855d518a258756a9d2656ecb58645683
https://doi.org/10.1088/1361-6455/ac65c6
https://doi.org/10.1088/1361-6455/ac65c6
Publikováno v:
Physical Review Research. 2
In our Comment we question the validity of the claim made by the authors of \cite{cc} that their solutions of the Dirac equation in an external {\em time-dependent} electromagnetic field describe beams of electrons. In every time-dependent field, no
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3f90bab0f72fc7e79956bf63c2f073b
https://doi.org/10.1103/physrevresearch.2.038001
https://doi.org/10.1103/physrevresearch.2.038001