Add to ORKGQuantum tunneling between degenerate ground states through the central barrier of a potential is extended to excited states with the instanton method. This extension is achieved with the help of an LSZ reduction technique as in field theory and may be of importance in the study of macroscopic quantum phenomena in magnetic systems
The theory of macroscopic quantum tunneling is applied to a current-biased dc SQUID which constitute...
The instanton-noninstanton (I-NI) transition in the tunneling process, which has been numerically ob...
The level splitting formulae much discussed in the study of spin tunneling in macroscopic ferromagne...
A formula suitable for a quantitative evaluation of the tunneling effect in a ferromagnetic particle...
The tunneling splitting of the energy levels of a ferromagnetic particle in the presence of an appli...
16 pages, 10 eps figures, Revtex, submitted to Phys. Rev. AWithin the framework of the instanton app...
The ground state tunnel splitting for the biaxial spin model in the magnetic field, ${\cal H}=-D S_...
The response of the magnetization to a time-dependent applied magnetic field in single-spin models f...
A new method is used to investigate the tunneling between two weakly-linked Bose-Einstein con- densa...
We study the response of the magnetization to a time-dependent applied magnetic field H(t) in a mode...
We study the response of the magnetization to a time-dependent applied magnetic field H(t) in a mode...
Monodomain ferromagnetic particles have an energy function which up to second order can be written a...
An instanton method is proposed to investigate the quantum tunneling between two weakly-linked Bose-...
Spin tunneling effect in Single Molecule Magnet Fe8 is studied by instanton calculation technique us...
In the present paper the uniaxial cluster, such as Mn$\text{}_{12}$, is considered. For explanation ...
The theory of macroscopic quantum tunneling is applied to a current-biased dc SQUID which constitute...
The instanton-noninstanton (I-NI) transition in the tunneling process, which has been numerically ob...
The level splitting formulae much discussed in the study of spin tunneling in macroscopic ferromagne...
A formula suitable for a quantitative evaluation of the tunneling effect in a ferromagnetic particle...
The tunneling splitting of the energy levels of a ferromagnetic particle in the presence of an appli...
16 pages, 10 eps figures, Revtex, submitted to Phys. Rev. AWithin the framework of the instanton app...
The ground state tunnel splitting for the biaxial spin model in the magnetic field, ${\cal H}=-D S_...
The response of the magnetization to a time-dependent applied magnetic field in single-spin models f...
A new method is used to investigate the tunneling between two weakly-linked Bose-Einstein con- densa...
We study the response of the magnetization to a time-dependent applied magnetic field H(t) in a mode...
We study the response of the magnetization to a time-dependent applied magnetic field H(t) in a mode...
Monodomain ferromagnetic particles have an energy function which up to second order can be written a...
An instanton method is proposed to investigate the quantum tunneling between two weakly-linked Bose-...
Spin tunneling effect in Single Molecule Magnet Fe8 is studied by instanton calculation technique us...
In the present paper the uniaxial cluster, such as Mn$\text{}_{12}$, is considered. For explanation ...
The theory of macroscopic quantum tunneling is applied to a current-biased dc SQUID which constitute...
The instanton-noninstanton (I-NI) transition in the tunneling process, which has been numerically ob...
The level splitting formulae much discussed in the study of spin tunneling in macroscopic ferromagne...