A New Basis Function Approach to 't Hooft-Bergknoff-Eller Equations

We analytically and numerically investigate the 't Hooft-Bergknoff-Eller equations, the lowest order mesonic Light-Front Tamm-Dancoff equations for U(N_C) and SU(N_C) gauge theories. We find the wavefunction can be well approximated by new basis functions and obtain an analytic formula for the mass of the lightest bound state. Its value is consistent with the precedent results.Comment: 16 pages, 3 figure

Does gravitational wave propagate in the five dimensional space-time with Kaluza-Klein monopole?

The behavior of small perturbations around the Kaluza-Klein monopole in the five dimensional space-time is investigated. The fact that the odd parity gravitational wave does not propagate in the five dimensional space-time with Kaluza-Klein monopole is found provided that the gravitational wave is constant in the fifth direction.Comment: 10 @ages, LATE

Can a gravitational wave and a magnetic monopole coexist?

We investigate the behavior of small perturbations around the Kaluza-Klein monopole in the five dimensional space-time. We find that the even parity gravitational wave does not propagate in the five dimensional space-time with Kaluza-Klein monopole provided that the gravitational wave is constant in the fifth direction. We conclude that a gravitational wave and a U(1) magnetic monopole do not coexist in five dimensional Kaluza-Klein spacetime.Comment: 10 pages, LaTeX. To appear in Modern Physics Letters

STUDY FOR SPECIFIC ENERGY CAPACITY OF FLYWHEEL ENERGY STORAGE

В работе излагаются основы методики исследования удельной энергоемкости кинетических накопителей энергии, где кроме традиционной оценки энергоемкости по кинетической энергии дается и оценка по удельной потенциальной энергии упругих деформаций. Анализируются возможности использования различных материалов при изготовлении маховиков. Отмечается, что используемая в работе оценка удельной энергоемкости кинетических накопителей энергии дает большую вариативность при их конструировании.The paper introduces basic methods of computational investigation for specific energy capacity of flywheel energy storage. In addition to the traditional estimation of energy capacity on the kinetic energy specific potential energy estimation of elastic strain is added. The possibilities of the use of various structural materials in the manufacture of flywheels is analyzed, some recommendations on the form of flywheel are given. "Extended" estimation of energy capacity which is used in this paper gives greater variability in the design of flywheel energy storage. In some cases it allows the reduction of the rotational speed of the rotor part of the structure.148-15