Physics |
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2006, No. 2
I.V. Alimenkov
EXACT SOLUTIONS OF NONLINEAR SCHRÖDINGER EQUATION AND COMPLEX GINZBURG—LANDAU EQUATION ON R(3+1)
The exact analytic solutions of the nonlinear Schrödinger equation and complex Ginzburg—Landau equation on R(3+1) are found.
E.K.Bashkirov
COLLECTIVE RADIATION OF TWO NONIDENTICAL ATOMS IN A CAVITY
The collective spontaneous radiation of the system of two nonidentical atoms interacting with one-mode quantum electromagnetic field in finite-Q cavity is considered on the basis of the master equation for the density matrix. The time dependencies of the mean photon number, intensity and mean inversion populations are obtained. The possibility of the radiation trapping and subradiance in the two-atom system is shown.
E.K.Bashkirov
ENTANGLEMENT IN THE SYSTEM OF TWO NONIDENTICAL ATOMS INTERACTING WITH THERMAL NOISE
The entanglement between two unidentical two-level atoms with different frequencies interacting with one-mode thermal field in lossles cavity is considered. The role of detuning in this effect is studied.
E.K.Bashkirov, M.S. Rusakova
THE DYNAMICS OF TWO TWO-LEVEL ATOMS IN A FINITE-Q CAVITY WITH ATOM DISSIPATION
In the paper a temporal behaviour of a two two-level atoms in a finite-Q cavity with atom dissipation is considered. The analytic expressions for mean photon number and atomic populations are obtained on the basis of master equation solution for coherent input. System observables dynamics is studied for coherent initial field state for various system parameters values. The field mode statistics is considered.
M.A. Buzova
The method of analysis of electromagnetic waves dispersion on the electrical lengthy conductors is considered. This method is based on the electric current method. The resolving method and the algorithm for a special problems are discussed. Some of numerical results are given.
A.A. Vikarchuk, I.S.Yasnikov, O.A.Dovzhenko, E.A.Talalova, M.N.Tyurkov
In the paper the method of electrodeposition is used to obtain the multitude of the copper crystals having one or six pentagonal symmetry axes. Features of their structure and probable mechanisms of formation and growth are considered. It is proved that various pentagonal crystals formed during electrodeposition have the similar disclination structure.
I.V. Gorbacheva, A.P.Martynenko, R.N.Faustov
PROTON POLARIZABILITY EFFECT IN THE HYPERFINE SPLITTING OF THE HYDROGEN ATOM
The contribution of the proton polarizability to the ground state hyperfine splitting in the hydrogen and muonic hydrogen atoms is evaluated on the basis of the isobar model and evolution equations for the parton distributions. The contributions of the Born terms, vector meson exchanges and nucleon resonances are taken into account in the construction of the proton polarized structure functions g1,2(W, Q2). Numerical value of this effect are equal (2.2 ± 0.8) × 10-6EF for the hydrogen atom and (4.70 ± 1.04) × 10-4EF for the muonic hydrogen atom.
A.V. Gorokhov, V.A. Mikhailov
The cooperative relaxation in system from N two-level atoms is studied. An asymptotic expansion of the Fokker—Planck equation propagator for P—symbol of a density matrix of quantum system is constructed. Explicit formulas for two-time correlators and spontaneous radiation line contour depending on the model parameters and the small expansion parameter 1/N are given.
V.V. Zaitsev, O.V. Zaitsev, V.V. Nikulin
INTEGRAL MODEL OF DISCRETE-DISTRIBUTED AUTOOSCILLATORY SYSTEM
The modeling method of autooscillations in systems with distributed oscillators and discrete active elements based on representation of equations in form of the Wolterra’s nonlinear integral equations and their numerical solutions is given. A modeling example of autooscillator with parallel-wire resonator and cubic-nonlinear active element is shown in the paper.
N.P.Kozlov, Î.Ì.Polyanskaya
In the paper the degree of depolarization in the limits of a strip of valent fluctuations of a molecule of water in a liquid condition is obtained. Investigations are carried out by the automated installation on the basis of spectrometer DFS-24 with excitation from laser LTI-701 (λ=532 nm). The curve of a degree of depolarization is received and its temperature dependence is studied. The maximum of a curve degree of depolarization in the field of 3520 sm-1 which position does not vary with temperature changes in a range from 0 up to 25 °C is found.
A.F. Krutov, V.E.Troitsky, N.A.Tsirova
QUARK DEGREES OF FREEDOM IN THE DEUTERON AND NUCLEON-NUCLEON DYNAMICS
Asymptotics of the deuteron form factors at high momentum transfers is investigated in the framework of relativistic composite nucleon model. Asymptotics is calculated in the nonrelativistic and relativistic impulse approximations. The influence of the recent opened ”non-Rosenbluth” behavior of proton form factors on the deuteron asymptotic is studied. It is established that the calculated in our work relativistic asymptotics describe adequately the existing experimental data at achieved momentum transfers. The contribution of the meson exchange currents to the deuteron form factors asymptotics is estimated. The general analytical form of the deuteron wave function, parameters of which are determined by the power of asymptotic decrease of deuteron form factors, particularly, the prediction of QCD, is obtained.
L.A. Mitlina, Y.V.Velickanova, M.R.Vinogradova, E.V.Krivosheeva, G.S. Badrtdinov
DEFECTS STRUCTURE, ELECTRIC AND MAGNETIC PROPERTIES OF MONOCRYSTALLINE FERRITE FILMS3
It is shown, that energy of electroconductivity activation in the range of temperatures 300–700 K coincides with energy of the dislocation a level. ”Smearing” of magnetic transformation on dependence in the range of Curie temperatures is defined by the ratio between parameters s-d exchange interaction, energy of activation of conductivity, constants of exchange interaction of spins. Parameter s-d exchange interaction, a constants of anisotropy galvanomagnetic effect, a constant of the induced magnetic anisotropy, radius of spin-spin exchange interaction, radius of magneto-dipole interactions, relaxational losses of magneticstatical waves are determinated by the degree of the plastic deformation set by technological conditions of reception.
V.M. Mironov, T.F. Mironova, Yu.N.Koval’, D.S. Gertsriken, V.V. Alekseeva
DIFFUSIVE PROCESSES IN METALS AND ALLOYS AT MARTENSITE TRANSFORMATIONS
The method of radioactive indicators investigates features of distribution and migration of atoms in metals and Fe–Ni-alloys of low temperatures for want of phase transformation, impulse deformation and for want of joint operation of transformation and strain. The velocities of mass-transfer and form of concentration structures are determined depending on method of impulse effect, size of a grain, such as a rigid solution, structure of an alloy and kind of penetrating atoms.
L.S. Molchatsky
DISPERSION APPROACH TO THE PROBLEM OF NEUTRINO MASS-SPLITTING
The Dashen—Frautschi dispersion method is used to investigate the mass-differences in the neutrino and charge lepton sectors. Here we consider the model in which the charge leptons are described by poles of the νi π- ---> νi π- scattering amplitudes where νi is the neutrino mass eigenstate with mass mi . The crucial contribution to the mass-splitting arises from the σ-resonance exchanges in the t-channel of these processes. In this way, the relation between mass differences in lepton sectors is derived.
S.P.Murzin
OPTICAL DEVICES OF LASER STREAM FORMING
Application of diffractive optical elements, such as radiation focusators, to material laser treating technology provide essentially new opportunities in obtaining properties and performances of heat treated details. Power density of generated laser streams laws distribution, and also of change in focal length and focal piece length at variation in spatial position of dynamic focusator are given. Theoretical and experimental research allows to create technological optical devices forming laser streams with the purpose of fully variated spatial distribution of power.
S.P.Murzin, S.Y. Klochkov, V.I.Artyushina
POWER EFFECT FORMING AT LASER TREATMENT OF MATERIALS
The most effective modes of laser processing materials are determined by the solution of the inversed problem of heat conductor. Calculations procedure of the density capacity of laser radiation is developed allowing to create more uniform temperature field on width a zone thermal effect of the moving distributed superficial power source. Optical systems are applied to formation of required power effect on technological objects on the basis of dynamic focusators radiation.
Yu.P.Philippov
THE TRIPLE INTERACTION OF MSSM NEUTRAL HIGGS BOSONS WITH THE YUKAWA ONE-LOOP CORRECTIONS
In the paper the results on the triple self-couplings λhhh, λhhH with the Yukawa one-loop corrections are presented. It is shown that the obtained corrections are considerable and should be taken into account in the calculations of the observables. The choice of couplings and their calculation algorithm is based on the consistent analysis of the recent results of the theoretical and experimental research devoted to the problem of MSSM neutral Higgs self-couplings definition.
M.B. Shalimova, A.S. Mikhailova, S.V. Sherstneva
INTERFACE CHARACTERISTICS OF FLUORIDE CONTAINED FILMS WITH SILICON (GERMANIUM) SUBSTRATES
In the paper the electrical properties of metal-tunnel-thin isolator-silicon (MIS) structures with erbium, thulium, gadolinium fluorides as insulating layers are studied. The characteristics of interfaces (energy distribution of the density of surface states, surface potential) are determined.