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Doklady of the National Academy of Sciences of Belarus

КВАНТОВАЯ МЕХАНИКА ЧАСТИЦЫ СО СПИНОМ 1 И АНОМАЛЬНЫМ МАГНИТНЫМ МОМЕНТОМ В МАГНИТНОМ ПОЛЕ

V. V. Kisel, Е. М. Овсиюк, Я. А. Войнова, О. В. Веко, Viktor M. Red'kov

Published Nov 3, 2016• 0 citations
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Abstract

The generalized Duffin–Kemmer equation for a spin 1 particle with the anomalous magnetic moment in the external uniform magnetic field is investigated. The separation of variables in the wave equation is performed on the basis of projective operator techniques. The problem is reduced to a system of differential equations for three independent functions that have been solved in terms of the confluent hypergeometric functions. Three series of the energy levels are found. To assign them the physical sense at all values of the main quantum number n = 0,1, 2, , special restrictions on anomalous magnetic moment values must be imposed – they are formulated in explicit form. Otherwise, only some part of the energy levels corresponds to the bound states. The neutral spin 1 particle is considered as well. In this case, no bound states exist in the systems. The main qualitative manifestation of the anomalous magnetic moment is the space scaling of the arguments of the wave functions in comparison with a particle without such a moment.

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КВАНТОВАЯ МЕХАНИКА ЭЛЕКТРОНА В МАГНИТНОМ ПОЛЕ, УЧЕТ АНОМАЛЬНОГО МАГНИТНОГО МОМЕНТА

Е. М. Овсиюк, О. В. Веко, Я. А. Войнова +2 more

The Dirac equation for spin 1/2 particle with anomalous magnetic moment is solved in presence of the external uniform magnetic field. After separation of the variables, the problem is reduced to a 4-order ordinary differential equation, which is solved exactly with the use of the factorization method. A generalized formulas for Landau energy levels are found. Solutions are expressed in terms of confluent hypergeometric functions.

Doklady of the National Academy of Sciences of Belarus•Oct 29, 2016•0 citations

Spin 1 Particle With Additional Characteristics in Uniform Magnetic Field

Alina V. Ivashkevich, Elena M. Ovsiyuk, Anton V. Bury +3 more

In this chapter, within the general method of Gel'fand–Yaglom, starting with an extended set of representations of the Lorentz group, we have constructed a relativistic generalized system of the first-order equations for a spin 1 particle with two additional characteristics, anomalous magnetic moment and polarizability. We have taken into account the presence of external electromagnetic fields. After eliminating the accessory variables of the complete wave function, we derive the minimal 10-component form of equations, the last includes two additional interaction terms which are interpreted as related to anomalous magnetic and moment and polarizability of the particle. This approach is extended to space-time models with pseudo-Riemannian structure, within the tetrad method. We specify the basic equations to the cylindrical coordinates, and also in presence of external uniform magnetic field. After separating the variables, we get the system of ten first-order-differential equations in polar coordinate. To resolve this system, we apply the method of Fedorov–Gronskiy; and the complete 10-component wave function is decomposed into the sum of three projective constituents, where dependence of each component on the polar coordinate is determined by only one function, https://www.w3.org/1998/Math/MathML" display="inline"> F i ( r ) , i = 1 , 2 , 3 . We construct them in terms of confluent hypergeometric equations; at this a quantization rule for some spectral parameter exists. Additionally arises an algebraic homogeneous system of ten equations, which completely determines the structure of 10-component solutions. By vanishing the determinant of the linear system, we derive a cubic algebraic equation with respect to energy parameter ϵ 2 . Its solutions are found in analytical form, and studied numerically. For different values of parameters, anomalous magnetic moment and polarizability, we have found three series of physically interpretable energy levels. For more details see [ 111 ]–[ 119 ].

CRC Press eBooks•Jan 21, 2026•0 citations

St¨uckelberg particle in external magnetic field. Nonrelativistic approximation. Exact solutions

Elena M. Ovsiyuk, A. Safronov, Alina V. Ivashkevich +1 more

The St¨uckelberg equation for a particle with two spin states, S = 1 and S = 0, is studied in the presence of an external uniform magnetic field. In relativistic case, the particle is described by an 11-component wave function. On the solutions of the equation, the operators of energy, the third projection of the total angular momentum, and the third projection of the linear momentum along the direction of the magnetic field are diagonalized. After separation of variables, we derive a system for 11 functions depending on one variable. We perform the nonrelativistic approximation in this system. For this we apply the known method of deriving nonrelativistic equations from relativistic ones, which is based on projective operators related to the matrix Γ0 of the relativistic equation. The nonrelativistic wave function turns out to be 4-dimensional. We derive the system for 4 functions. It is solved in terms of confluent hypergeometric functions. There arise three series of energy levels with corresponding solutions. This result agrees with that obtained for the relativistic St¨uckelberg equation.

Proceedings of the Komi Science Centre of the Ural Division of the Russian Academy of Sciences•Dec 20, 2022•1 citation

Spin 1/2 particle with anomalous magnetic moment and polarizability in the external magnetic field

Ивашкевич, А.В., Саченок, П.О., Овсиюк, Е.М. +5 more

Уравнение для частицы со спином 1/2 и двумя дополнительными характеристиками – аномальным магнитным моментом и поляризуемостью – исследовано при наличии внешнего однородного магнитного поля. После разделения переменных получена система четырех дифференциальных уравнений в полярной координате. Для решения системы применяется метод Федорова – Гронского, основанный на использовании проективных операторов. Согласно этому подходу, четыре полярные компоненты выражаются через две различные функции, последние сводятся к вырожденному гипергеометрическому уравнению; при этом возникает правило квантования. Построены два типа волновых функций, соответствующие энергетические спектры найдены в аналитическом виде и исследованы численно. = In the present paper, we examine the equation for a spin 1/2 particle with two additional characteristics, anomalous magnetic moment and polarizability in presence of external uniform magnetic field. After separating the variables, we derive the system of four differential equations in the polar coordinate. To resolve the system of equations, we apply the method by Fedorov – Gronskiy, which is based on the use of projective operators. According to this approach, four polar components are expressed through only two different functions, the last reduce to the confluent hypergeometric equation; moreover there arises a definite quantization rule. We have constructed two types of the wave functions, the corresponding energy spectra are found in analytical form. The energy spectra are studied numerically as well.

•Jan 1, 2025•0 citations

Exact solutions for quantum mechanical particle with spin 1 in the external homogeneous magnetic field

V. V. Kisel, Elena M. Ovsiyuk, Viktor M. Red'kov

With the use of the general covariant matrix 10-dimensional Petiau -- Duffin -- Kemmer formalism in cylindrical coordinates and tetrad there are constructed exact solutions of the quantum-mechanical equation for a particle with spin 1 in presence of an external homogeneous magnetic field. There are separated three linearly independent types of solutions; in each case the formula for energy levels has been found.

arXiv:1005.3501•May 19, 2010•0 citations

УРАВНЕНИЕ ПАУЛИ ДЛЯ ЧАСТИЦЫ СО СПИНОМ 1 В СФЕРИЧЕСКОМ ПРОСТРАНСТВЕ РИМАНА, ТОЧНЫЕ РЕШЕНИЯ

Е. М. Овсиюк

The system of nonrelativistic Pauli equations for a spin 1 particle is solved in the case of the Riemann space of constant positive curvature. The system of three interrelated radial equations is divided into two subsystems with the use of a space reflection operator: one and two equations, respectively. The first is solved in hypergeometric functions straightforwardly. The second subsystem gives two 4-order ordinary differential equations; they are solved with the use of the factorization method: energy spectra and wave functions are found.

Doklady of the National Academy of Sciences of Belarus•May 31, 2016•0 citations
The generalized Duffin–Kemmer equation for a spin 1 particle with the anomalous magnetic moment in the external uniform magnetic field is investigated. The separation of variables in the wave equation is performed on the basis of projective operator techniques. The problem is reduced to a system of differential equations for three independent functions that have been solved in terms of the confluent hypergeometric functions. Three series of the energy levels are found. To assign them the physical sense at all values of the main quantum number n = 0,1, 2, , special restrictions on anomalous magnetic moment values must be imposed – they are formulated in explicit form. Otherwise, only some part of the energy levels corresponds to the bound states. The neutral spin 1 particle is considered as well. In this case, no bound states exist in the systems. The main qualitative manifestation of the anomalous magnetic moment is the space scaling of the arguments of the wave functions in comparison with a particle without such a moment.
In this chapter, within the general method of Gel'fand–Yaglom, starting with an extended set of representations of the Lorentz group, we have constructed a relativistic generalized system of the first-order equations for a spin 1 particle with two additional characteristics, anomalous magnetic moment and polarizability. We have taken into account the presence of external electromagnetic fields. After eliminating the accessory variables of the complete wave function, we derive the minimal 10-component form of equations, the last includes two additional interaction terms which are interpreted as related to anomalous magnetic and moment and polarizability of the particle. This approach is extended to space-time models with pseudo-Riemannian structure, within the tetrad method. We specify the basic equations to the cylindrical coordinates, and also in presence of external uniform magnetic field. After separating the variables, we get the system of ten first-order-differential equations in polar coordinate. To resolve this system, we apply the method of Fedorov–Gronskiy; and the complete 10-component wave function is decomposed into the sum of three projective constituents, where dependence of each component on the polar coordinate is determined by only one function, https://www.w3.org/1998/Math/MathML" display="inline"> F i ( r ) , i = 1 , 2 , 3 . We construct them in terms of confluent hypergeometric equations; at this a quantization rule for some spectral parameter exists. Additionally arises an algebraic homogeneous system of ten equations, which completely determines the structure of 10-component solutions. By vanishing the determinant of the linear system, we derive a cubic algebraic equation with respect to energy parameter ϵ 2 . Its solutions are found in analytical form, and studied numerically. For different values of parameters, anomalous magnetic moment and polarizability, we have found three series of physically interpretable energy levels. For more details see [ 111 ]–[ 119 ].
The St¨uckelberg equation for a particle with two spin states, S = 1 and S = 0, is studied in the presence of an external uniform magnetic field. In relativistic case, the particle is described by an 11-component wave function. On the solutions of the equation, the operators of energy, the third projection of the total angular momentum, and the third projection of the linear momentum along the direction of the magnetic field are diagonalized. After separation of variables, we derive a system for 11 functions depending on one variable. We perform the nonrelativistic approximation in this system. For this we apply the known method of deriving nonrelativistic equations from relativistic ones, which is based on projective operators related to the matrix Γ0 of the relativistic equation. The nonrelativistic wave function turns out to be 4-dimensional. We derive the system for 4 functions. It is solved in terms of confluent hypergeometric functions. There arise three series of energy levels with corresponding solutions. This result agrees with that obtained for the relativistic St¨uckelberg equation.
Уравнение для частицы со спином 1/2 и двумя дополнительными характеристиками – аномальным магнитным моментом и поляризуемостью – исследовано при наличии внешнего однородного магнитного поля. После разделения переменных получена система четырех дифференциальных уравнений в полярной координате. Для решения системы применяется метод Федорова – Гронского, основанный на использовании проективных операторов. Согласно этому подходу, четыре полярные компоненты выражаются через две различные функции, последние сводятся к вырожденному гипергеометрическому уравнению; при этом возникает правило квантования. Построены два типа волновых функций, соответствующие энергетические спектры найдены в аналитическом виде и исследованы численно. = In the present paper, we examine the equation for a spin 1/2 particle with two additional characteristics, anomalous magnetic moment and polarizability in presence of external uniform magnetic field. After separating the variables, we derive the system of four differential equations in the polar coordinate. To resolve the system of equations, we apply the method by Fedorov – Gronskiy, which is based on the use of projective operators. According to this approach, four polar components are expressed through only two different functions, the last reduce to the confluent hypergeometric equation; moreover there arises a definite quantization rule. We have constructed two types of the wave functions, the corresponding energy spectra are found in analytical form. The energy spectra are studied numerically as well.
The system of nonrelativistic Pauli equations for a spin 1 particle is solved in the case of the Riemann space of constant positive curvature. The system of three interrelated radial equations is divided into two subsystems with the use of a space reflection operator: one and two equations, respectively. The first is solved in hypergeometric functions straightforwardly. The second subsystem gives two 4-order ordinary differential equations; they are solved with the use of the factorization method: energy spectra and wave functions are found.