559 research outputs found
Reflection of light from an anisotropic medium
We present here a general approach to treat reflection and refraction of
light of arbitrary polarization from single axis anisotropic plates. We show
that reflection from interface inside the anisotropic medium is accompanied by
beam splitting and can create surface waves.Comment: 16 pages 5 figures I tried to resubmit the paper to redirect it from
gen.phys into optics, but I see that it is impossibl
Uncertainty Relations (UR) Have Nothing to do with Quantum Mechanics (QM)
Uncertainty relations are shown to have nothing specific for quantum
mechanics, being the general property valid for arbitrary function. A wave
function of a particle having precisely defined position and momentum in QM
simultaneously is demonstrated. Interference on two slits in a screen is shown
to exist in classical mechanics. A nonlinear classical system of equations
replacing QM Schr\"odinger equation is suggested. This approach is shown to
have nothing in common with Bohmian mechanics.Comment: 5 pages 2 figures in the text, slightly edited and added three
sections in reply to a referee repor
Contradiction of the DENSITY MATRIX notion in quantum mechanics
It is shown that description of a nonpolarized neutron beam by density matrix
is contradictory. Density matrix is invariant with respect to choice of
quantization axis, while experimental devices can discriminate between
different quantization axes.Comment: 6 pages, no figures, slightly edite
Contradictions of the quantum scattering theory
The standard scattering theory (SST) in non relativistic quantum mechanics
(QM) is analyzed. Self-contradictions of SST are deconstructed. A direct way to
calculate scattering probability without introduction of a finite volume is
discussed. Substantiation of SST in textbooks with the help of wave packets is
shown to be incomplete. A complete theory of wave packets scattering on a fixed
center is presented, and its similarity to the plane wave scattering is
demonstrated. The neutron scattering on a monatomic gas is investigated, and
several problems are pointed out. A catastrophic ambiguity of the cross section
is revealed, and a way to resolve this ambiguity is discussed.Comment: 33 pages, 2 figures, It is a version submitted to Phys.Rev.A and
rejected. Small paragraph and the discussion with referees is adde
A Model of Violation and Superviolation of Bell's Inequality in Local Quantum Mechanics
A model for violation and even superviolation of the Bell's inequalities in
coincidence experiments with photons in local \qm\ is presented. The model is
based on assumption that time retardation or losses in an analyzer depend on
angle between linear polarization of an incident photon and the analyzer's
axis.Comment: 5 pages, 3 figure
Dynamical diffraction
An algebraic approach to neutron scattering on a one dimensional potentials
is generalized to diffraction on three dimensional single crystals.Comment: 10 pages, 5 figures. A report at XXXII-th ITEP Winter School, Moscow
16-26 Febr. 200
A model of the ball lightning
The ball lightning is supposed to be a shock wave of a point explosion frozen
with electrostriction forces of the internal strong laser discharge. The life
time of the ball with modest parameters is calculated.Comment: 10 pages, 2 figure. 06.09.11 I improved it V.K.Ignatovich "Neutron
stars without gravity" in: Neutron Spectroscopy, Nuclear Structure, Related
Topics; ISINN-12 Dubna May26-29, JINR 2004, pp. 117-132; V.K. Ignatovich
Neutron stars without gravity. Proceedings of the XXXVII-VIII winter school
in PINPI on Physics of atomic nuclei and elementary particles, St.Petersburg,
2004, pp. 446-46
Scattering of scalar waves on a single crystalline plane
Scattering of a scalar particle on a crystalline plane with quadratic cell
and identical fixed scatterers is solved precisely. Contradiction of the
standard scattering theory is pointed out.Comment: 14 pages 4 figure
Neutron reflection from condensed matter, the Goos-H\"anchen effect and coherence
The Goos-H\"anchen (G-H) effect for neutron reflection from condensed matter
is considered. An experiment to quantify the effect is proposed. The relation
of G-H shift to the neutron coherence length is considered.Comment: 12 pages 5 .eps figure
Reflection of neutrons from fan-like magnetic systems
An analytical solution is found for neutron reflection coefficients from
magnetic mirrors with fan-like magnetization. The main feature of the
reflection curves related to this type of magnetization is pointed out. The
results of calculations for some parameters of the system are presented. Time
parity and detailed balance violation in the model are discussed.Comment: 17 pages, 5 figure
- …