807 research outputs found
A note on N=4 supersymmetric mechanics on K\"ahler manifolds
The geometric models of N=4 supersymmetric mechanics with
(2d.2d)_{\DC}-dimensional phase space are proposed, which can be viewed as
one-dimensional counterparts of two-dimensional N=2 supersymmetric sigma-models
by Alvarez-Gaum\'e and Freedman. The related construction of supersymmetric
mechanics whose phase space is a K\"ahler supermanifold is considered. Also,
its relation with antisymplectic geometry is discussed.Comment: 4 pages, revte
Increasing the efficiency of heating systems through the use of direct contact heat exchange
You should leave 8 mm of space above the abstract and 10 mm after the abstract. The heading Abstract should be typed in bold 9-point Arial. The body of the abstract should be typed in normal 9-point Times in a single paragraph, immediately following the heading. The text should be set to 1 line spacing. The abstract should be centred across the page, indented 17 mm from the left and right page margins and justified. It should not normally exceed 200 words
ΠΠ΅ΡΠ²Π°Ρ ΠΊΡΠ°Π΅Π²Π°Ρ Π·Π°Π΄Π°ΡΠ° Π΄Π»Ρ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ ΡΠ΅ΠΏΠ»ΠΎΠΏΡΠΎΠ²ΠΎΠ΄Π½ΠΎΡΡΠΈ Ρ Π½Π°Π³ΡΡΠ·ΠΊΠΎΠΉ Π΄ΡΠΎΠ±Π½ΠΎΠ³ΠΎ ΠΏΠΎΡΡΠ΄ΠΊΠ°. II
Π ΡΡΠ°ΡΡΠ΅ ΡΠ°ΡΡΠΌΠΎΡΡΠ΅Π½Π° ΠΏΠ΅ΡΠ²Π°Ρ ΠΊΡΠ°Π΅Π²Π°Ρ Π·Π°Π΄Π°ΡΠ° Π΄Π»Ρ Π½Π°Π³ΡΡΠΆΠ΅Π½Π½ΠΎΠ³ΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ ΡΠ΅ΠΏΠ»ΠΎΠΏΡΠΎΠ²ΠΎΠ΄Π½ΠΎΡΡΠΈ Π² ΡΠ΅ΡΠ²Π΅ΡΡΠΈ ΠΏΠ»ΠΎΡΠΊΠΎΡΡΠΈ. ΠΠ°Π³ΡΡΠΆΠ΅Π½Π½ΠΎΠ΅ ΡΠ»Π°Π³Π°Π΅ΠΌΠΎΠ΅ - ΡΠ»Π΅Π΄ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄Π½ΠΎΠΉ Π΄ΡΠΎΠ±Π½ΠΎΠ³ΠΎ ΠΏΠΎΡΡΠ΄ΠΊΠ° Π½Π° ΠΌΠ½ΠΎΠ³ΠΎΠΎΠ±ΡΠ°Π·ΠΈΠΈ x=t. Π Π΅ΡΠ΅Π½ΠΈΠ΅ Π·Π°Π΄Π°ΡΠΈ ΡΠ²ΠΎΠ΄ΠΈΡΡΡ ΠΊ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΎΡΠΎΠ±ΠΎΠ³ΠΎ ΠΈΠ½ΡΠ΅Π³ΡΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ ΠΠΎΠ»ΡΡΠ΅ΡΡΠ° Π²ΡΠΎΡΠΎΠ³ΠΎ ΡΠΎΠ΄Π° Ρ Π½Π΅ΡΠΆΠΈΠΌΠ°Π΅ΠΌΡΠΌ ΡΠ΄ΡΠΎΠΌ. Π Π΅ΡΠ΅Π½ΠΈΠ΅ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΡΠ΅Π³ΡΠ»ΡΡΠΈΠ·Π°ΡΠΈΠΈ ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΎ, ΡΡΠΎ ΠΎΡΠΎΠ±ΠΎΠ΅ ΠΈΠ½ΡΠ΅Π³ΡΠ°Π»ΡΠ½ΠΎΠ΅ ΡΡΠ°Π²Π½Π΅Π½ΠΈΠ΅ ΠΠΎΠ»ΡΡΠ΅ΡΡΠ° ΠΈΠΌΠ΅Π΅Ρ Π½Π΅ΠΏΡΡΡΠΎΠΉ ΡΠΏΠ΅ΠΊΡΡ ΠΏΡΠΈ 1/2β€Ξ²<1. ΠΠΎΠΊΠ°Π·Π°Π½Π° ΡΠ΅ΠΎΡΠ΅ΠΌΠ° ΠΎΡΡΡΠ΅ΡΡΠ²ΠΎΠ²Π°Π½ΠΈΠΈ Π½Π΅ΡΡΠΈΠ²ΠΈΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠ΅ΡΠ΅Π½ΠΈΡ ΠΎΠ΄Π½ΠΎΡΠΎΠ΄Π½ΠΎΠΉ ΠΊΡΠ°Π΅Π²ΠΎΠΉ Π·Π°Π΄Π°ΡΠΈ Π² Π½Π΅ΠΎΠ³ΡΠ°Π½ΠΈΡΠ΅Π½Π½ΠΎΠΉ ΠΎΠ±Π»Π°ΡΡΠΈ
On the boundary value problem for the vibration and wave processes in two-dimensional environs
In the article research of the third boundary value problem for the two - dimensional equation of free membrane vibrations is presented. The solution of the original differential operator is found in the form of a combination of the linearly independent system of orthonormal eigenfunctions on the given interval. Using the spectral decomposition for sufficiently smooth function, one can obtain the exact analytical representation of the deflection function for investigated problem in two - dimensional environs. The deflection function characterizes a membrane deviation from the equilibrium position
Experimental Study of Coherent Summation of Radiation from Two Widely Aperture Pulsed
Emission of two high-power pulsed CO2-lasers with a transverse discharge at atmospheric pressure in
the active medium and the output beam aperture 100Ρ
100 mm, united by a joint unstable telescopic reso-nator, was coherently summarized under conditions of real ground-level trackon the screen surface, which
was remote from output mirror of the laser at a distance of 263 m. Output Brewster windows of laser cu-vettes were manufactured from single-crystal plates of sodium chloride which had a diameter of 300 mm.
Mirrors for resonator and optical circuit were manufactured from oxygen-free copper. Active medium - a
mixture of gases: CO2: N2: He in the ratio 1 : 2 : 3. Laser pulse duration is 5 microseconds. During the ex-periment, when summing on the screen 2-laser beams at the lowest possible convergence angle of rays, the
interference pattern was registered.
When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3610
Higher Spins from Tensorial Charges and OSp(N|2n) Symmetry
It is shown that the quantization of a superparticle propagating in an N=1,
D=4 superspace extended with tensorial coordinates results in an infinite tower
of massless spin states satisfying the Vasiliev unfolded equations for free
higher spin fields in flat and AdS_4 N=1 superspace. The tensorial extension of
the AdS_4 superspace is proved to be a supergroup manifold OSp(1|4). The model
is manifestly invariant under an OSp(N|8) (N=1,2) superconformal symmetry. As a
byproduct, we find that the Cartan forms of arbitrary Sp(2n) and OSp(1|2n)
groups are GL(2n) flat, i.e. they are equivalent to flat Cartan forms up to a
GL(2n) rotation. This property is crucial for carrying out the quantization of
the particle model on OSp(1|4) and getting the higher spin field dynamics in
super AdS_4, which can be performed in a way analogous to the flat case.Comment: LaTeX, 21 page (JHEP style), misprints corrected, added comments on
the relation of results of hep-th/0106149 with hep-th/9904109 and
hep-th/9907113, references adde
Photoionization in the presence of circularly polarized fundamental and odd-order harmonic fields
We present a study of the photoelectron spectra for the ionization process driven by counterrotating and corotating circularly polarized fundamental and odd-order harmonic fields. The main features of the spectra, such as symmetric lobed structures, are understood using simple arguments based on the strong field approximation (SFA) picture of ionization. A deviation from this picture is, most notably, the presence of the low-energy structures (LES) in the spectra. We show that the Rydberg states populated as a result of the combined absorption of the photons from the fundamental and harmonic fields are responsible for the origin of LES.
Β© 2017 American Physical Society1111Nsciescopu
On the solution of boundary value problems by the spectral element method
In spectral element method approximate solution of the original differential operator is found in the form of a combination of the linearly independent system of orthogonal functions on the unit interval. Using the spectral decomposition for sufficiently smooth functions, one can obtain an exponential rate of convergence of the approximate solution to the exact solution and the approximation error will decrease exponentially as n grows. In the article the application of spectral element method to the solution of the boundary value problem for the Poisson equation is presented
Gauge Invariance and Anomalous Dimensions of a Light-Cone Wilson Loop in Light-Like Axial Gauge
Complete two-loop calculation of a dimensionally regularized Wilson loop with
light-like segments is performed in the light-like axial gauge with the
Mandelstam-Leibbrandt prescription for the gluon propagator. We find an
expression which {\it exactly} coincides with the one previously obtained for
the same Wilson loop in covariant Feynman gauge. The renormalization of Wilson
loop is performed in the \MS-scheme using a general procedure tailored to the
light-like axial gauge. We find that the renormalized Wilson loop obeys a
renormalization group equation with the same anomalous dimensions as in
covariant gauges. Physical implications of our result for investigation of
infrared asymptotics of perturbative QCD are pointed out.Comment: 24 pages and 4 figures (included), LaTeX style, UFPD-93/TH/23,
UPRF-93-366, UTF-93-29
ΠΠ΅Π»ΡΠ²ΠΈΠΎΠΌΠ΅ΡΡΠΈΡ Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΠΏΡΠΈΠΌΠΈΠ½Π΅Π½ΠΈΡ ΡΠ΄Π΅ΡΠ½ΠΎ-ΠΌΠ°Π³Π½ΠΈΡΠ½ΠΎΠ³ΠΎ ΡΠ΅Π·ΠΎΠ½Π°Π½ΡΠ° ΠΏΡΠΈ ΡΡΠ±ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈΡ ΡΠΎΡΠΌΠ°Ρ ΡΠ·ΠΊΠΎΠ³ΠΎ ΡΠ°Π·Π° ΠΈ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΡΠΈΡΠΊΠ° Π² ΡΠ»ΡΡΠ°Π΅ Π΄ΠΈΡΡΠΎΡΠΈΠΈ ΠΏΡΠ΅ΡΠΈΠΊΠΎΠ²
Military Medical Academy, Department of radiology, St-Petersburg, Russia, Federal Center of blood, heart and endocrinology by VA. Almazov, St-Petersburg, RussiaΠΠΎ ΠΌΠ½ΠΎΠ³ΠΈΡ
ΡΡΡΠ°Π½Π°Ρ
ΡΠΎΡΠ½ΠΎΡΡΡ ΠΈΠ·ΠΌΠ΅ΡΠ΅Π½ΠΈΠΉ ΡΠ°Π·ΠΌΠ΅ΡΠΎΠ² Π½Π°ΡΡΠΆΠ½ΠΎΠ³ΠΎ ΡΠ°Π·Π° ΡΠΎΠΌΠ½ΠΈΡΠ΅Π»ΡΠ½Π°. Π Π°ΡΠΏΡΠΎΡΡΡΠ°Π½Π΅Π½Π½ΠΎΡΡΡ
ΠΏΠΎΠ΄ΡΠΈΠΏΠΎΠ² ΡΡΠ±ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈ ΡΠ·ΠΊΠΎΠ³ΠΎ ΠΊΠΎΡΡΠ½ΠΎΠ³ΠΎ ΡΠ°Π·Π° Π΅ΡΠ΅ Π±ΠΎΠ»Π΅Π΅ Π·Π°ΡΡΡΠ΄Π½ΡΠ΅Ρ Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΡ.
Π¦Π΅Π»Ρ: ΡΡΡΠ°Π½ΠΎΠ²ΠΈΡΡ Π°ΠΊΡΡΠ΅ΡΡΠΊΠΈΠ΅ ΠΠ ΠΏΠ΅Π»ΡΠ²ΠΈΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΈ ΡΠ΅ΡΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠ΅ΡΠ΅ΡΠ΅Π½ΡΠ½ΡΠ΅ Π·Π½Π°ΡΠ΅Π½ΠΈΡ ΠΏΡΠΈ ΠΎΡΠ΅Π½ΠΊΠ΅
ΡΠΈΡΠΊΠ° Π΄ΠΈΡΡΠΎΡΠΈΠΈ ΠΏΠ»Π΅ΡΠΈΠΊΠΎΠ² ΠΏΠ»ΠΎΠ΄Π° ΠΏΠ΅ΡΠ΅Π΄ ΡΠΎΠ΄Π°ΠΌΠΈ ΠΈ ΡΡΠ°Π²Π½ΠΈΡΡ ΠΠ ΠΏΠ΅Π»ΡΠ²ΠΈΠΎΠΌΠ΅ΡΡΠΈΡ Ρ Π½Π°ΡΡΠΆΠ½ΡΠΌΠΈ ΠΌΠ΅ΡΠΎΠ΄Π°ΠΌΠΈ ΠΈΠ·ΠΌΠ΅ΡΠ΅Π½ΠΈΡ.
ΠΠ΅ΡΠΎΠ΄Ρ: ΠΎΠ±ΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Ρ 40 ΠΆΠ΅Π½ΡΠΈΠ½ Ρ ΠΎΠ΄Π½ΠΎΠΏΠ»ΠΎΠ΄Π½ΠΎΠΉ Π±Π΅ΡΠ΅ΠΌΠΎΠ½Π½ΠΎΡΡΡΡ Π² ΡΡΠΎΠΊΠ΅ 38-39 Π½Π΅Π΄Π΅Π»Ρ. ΠΠ ΠΏΠ΅ΠΏΡΠ²ΠΈΠΎΠΌΠ΅ΡΡΠΈΡ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΠΈΠ»Π°ΡΡ Π½Π° Π²ΡΡΠΎΠΊΠΎΠΏΠΎΠ»ΡΠ½ΠΎΠΌ 1,5 Π’ MRT. ΠΡΠ΅ ΡΡΠ±ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠΈΠΏΡ ΡΠ·ΠΊΠΎΠ³ΠΎ ΠΊΠΎΡΡΠ½ΠΎΠ³ΠΎ ΡΠ°Π·Π° Π±ΡΠ»ΠΈ ΡΠ°Π·Π΄Π΅Π»Π΅Π½Ρ Π½Π° 3 ΡΡΠ΅ΠΏΠ΅Π½ΠΈ. ΠΡΠΎΠ²ΠΎΠ΄ΠΈΠ»Π°ΡΡ ΡΠ°ΠΊΠΆΠ΅ ΡΠ΅ΡΠΎΠΌΠ΅ΡΡΠΈΡ. Π ΠΈΡΠΊ Π΄ΠΈΡΡΠΎΡΠΈΠΈ ΠΎΠΏΡΠ΅Π΄Π΅Π»ΡΠ»ΡΡ ΠΊΠ°ΠΊ ΠΌΠΈΠ½ΠΈΠΌΠ°Π»ΡΠ½ΡΠΉ, Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΡΠΉ ΠΈ Π²ΡΡΠΎΠΊΠΈΠΉ.
Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ: ΠΠ±ΡΠΎΠ»ΡΡΠ½ΠΎ ΡΠ·ΠΊΠΈΠΉ ΡΠ°Π· Π±ΡΠ» Π²ΡΡΠ²Π»Π΅Π½ Ρ 3 ΠΆΠ΅Π½ΡΠΈΠ½. ΠΠΈΠ°ΠΌΠ΅ΡΡ ΠΊΠΎΡΡΠ½ΠΎΠ³ΠΎ ΡΠ°Π·Π°, ΠΈΠ·ΠΌΠ΅ΡΠ΅Π½Π½ΡΠΉ Π½Π° ΠΠ Π’,
Π±ΡΠ» Π½ΠΎΡΠΌΠ°Π»ΡΠ½ΡΠΌ Ρ 14 (35%) ΠΆΠ΅Π½ΡΠΈΠ½. ΠΠ²Π΅Π½Π°Π΄ΡΠ°ΡΠΈ ΠΆΠ΅Π½ΡΠΈΠ½Π°ΠΌ (30%) ΡΠΎ 2 ΡΡΠ΅ΠΏΠ΅Π½ΡΡ ΡΠ·ΠΊΠΎΠ³ΠΎ ΡΠ°Π·Π° ΠΈ/ΠΈΠ»ΠΈ ΠΊΡΡΠΏΠ½ΡΠΌ
ΠΏΠ»ΠΎΠ΄ΠΎΠΌ (>4000 Π³) ΠΏΡΠΈ ΠΎΡΡΡΡΡΡΠ²ΠΈΠΈ Π΄ΡΡΠ³ΠΈΡ
ΠΏΡΠΎΡΠΈΠ²ΠΎΠΏΠΎΠΊΠ°Π·Π°Π½ΠΈΠΉ Π±ΡΠ»ΠΎ ΡΠ΅ΠΊΠΎΠΌΠ΅Π½Π΄ΠΎΠ²Π°Π½ΠΎ ΡΠΎΠ΄ΠΎΡΠ°Π·ΡΠ΅ΡΠ΅Π½ΠΈΠ΅ ΡΠ΅ΡΠ΅Π· Π΅ΡΡΠ΅ΡΡΠ²Π΅Π½Π½ΡΠ΅ ΡΠΎΠ΄ΠΎΠ²ΡΠ΅ ΠΏΡΡΠΈ, Π½ΠΎ 6 ΠΈΠ· Π½ΠΈΡ
Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΎ ΠΠ‘.
ΠΠ°ΠΊΠ»ΡΡΠ΅Π½ΠΈΠ΅: Π½ΠΈΠ·ΠΊΠ°Ρ ΡΠ°ΡΡΠΎΡΠ° Π²ΡΡΠ²Π»Π΅Π½ΠΈΡ ΡΡΠ±ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈ ΡΠ·ΠΊΠΎΠ³ΠΎ ΠΊΠΎΡΡΠ½ΠΎΠ³ΠΎ ΡΠ°Π·Π° ΠΏΡΠΈ Π½Π°ΡΡΠΆΠ½ΡΡ
ΠΈΠ·ΠΌΠ΅ΡΠ΅Π½ΠΈΡΡ
ΠΌΠΎΠΆΠ΅Ρ ΠΏΡΠΈΠ²ΠΎΠ΄ΠΈΡΡ ΠΊ Π·Π°ΠΏΠΎΠ·Π΄Π°Π»ΠΎΠΉ ΠΈΠ½ΡΡΠ°Π½Π°ΡΠ°Π»ΡΠ½ΠΎΠΉ Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΠΈ ΡΡΠΎΠΉ ΠΏΠ°ΡΠΎΠ»ΠΎΠ³ΠΈΠΈ. ΠΠ ΠΏΠ΅Π»ΡΠ²ΠΈΠΎΠΌΠ΅ΡΡΠΈΡ Π²ΡΡΠ²Π»ΡΠ»Π°
ΡΡΠ±ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΎΠ΅ ΡΡΠΆΠ΅Π½ΠΈΠ΅ ΠΊΠΎΡΡΠ½ΠΎΠ³ΠΎ ΡΠ°Π·Π°. ΠΠΎΠΏΠΎΠ»Π½ΠΈΡΠ΅Π»ΡΠ½ΡΠ΅ Π΄Π°Π½Π½ΡΠ΅ ΡΠ΅ΡΠΎΠΌΠ΅ΡΡΠΈΠΈ ΠΏΠΎΠΌΠΎΠ³Π»ΠΈ ΠΎΡΠ΅Π½ΠΈΡΡ ΡΠΈΡΠΊ Π΄ΠΈΡΡΠΎΡΠΈΠΈ ΠΏΠ»Π΅ΡΠΈΠΊΠΎΠ² ΠΏΠ΅ΡΠ΅Π΄ ΡΠΎΠ΄Π°ΠΌΠΈ
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