Heisenberg model
Existence of Néel order in the S=1 bilinear biquadratic Heisenberg model via random loops
... spin-1 Heisenberg model are de- duced using a random loop model first introduced in the work of Nachtergaele ...2 Heisenberg ferromagnet; this improved the bound of Conlon and Solovej ...loop ...
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An Improved Finite Temperature Lanczos Method and Its Application to the Spin 1/2 Heisenberg Model on the Kagome Lattice
... Another improvement was to employ the effective sampling method for selecting a random vector. Using this sampling we can improve the efficiency of calculations. By the tFTLM, we calculated the specific heat of the ...
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A Quantum Dynamics of Heisenberg Model of the Neutron Associated with Beta Decay
... a model of the nucleons that involve the weak in- teraction which was once considered by Heisenberg; that is a neutron may have the structure of a dwarf hydrogen-like ...the Heisenberg model ...
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Beyond the Heisenberg model: Anisotropic exchange interaction between a Cu tetraazaporphyrin monolayer and Fe3O4(100)
... In summary, we demonstrate a strongly anisotropic ex- change coupling possibly augmented by a dipolar compo- nent between the single unpaired spin of the central Cu(II) ion of a porphyrin molecule and the magnetite(100) ...
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Structure of Essential Spectrum and Discrete Spectrum of the Energy Operator of Three Magnon Systems in the Isotropic Ferromagnetic Non Heisenberg Model with Spin One and Nearest Neighbor Interactions
... We consider a three-magnon system in the isotropic ferromagnetic Non- Heisenberg model with spin one and with a coupling between near- est-neighbors. The structure of essential spectrum and discrete ...
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Incorporation of density-matrix wave functions in Monte Carlo simulations: Application to the frustrated Heisenberg model
... frustrated Heisenberg model by constructing the DMRG wave function of the ground state for long strips up to a width of eight ...unfrustrated model where sufficient in- formation is available from ...
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Entanglement in the Quantum Phase Transition of the Half Integer Spin One Dimensional Heisenberg Model
... Heisenberg chains. Our calculations show that the entanglement is maximum in the point ∆ = 1 and the entan- glement is minimum when ∆ = − 1 . Consequently there is a large influence of the quantum critical region ...
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Nonperturbative real-space renormalization group scheme for the spin-1/2 XXX Heisenberg model
... Although RG methods have been successfully applied to a variety of physical problems, the construction of RGT’s ap- plicable to strong-coupling regimes is, apart from a few ex- ceptions, an unsolved and challenging ...
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AB INITIO STUDY OF THE POSSIBLE SINGLE-CENTER UNITS FOR BINUCLEAR IRON COMPLEX [Fe2(bpym)3Cl4]
... suitable model that will describe not only the behavior of the complete system, but the internal interactions that take place there, is to proceed with the magnetic properties of polynuclear complexes ...
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Heisenberg spin triangles in {V6} type magnetic molecules: Experiment and theory
... a Heisenberg model for two identical uncoupled triangles of spins; in each triangle, the spins interact via isotropic antiferromagnetic exchange, where two of the three V-V interactions have exchange ...
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Exchange anisotropy and the dynamic phase transition in thin ferromagnetic Heisenberg films
... spherical model in an oscillatory magnetic field has shown that the oscillation of the system magnetization will always be centered on ...spherical model cannot support a dynamically ordered phase and so ...
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AB INITIO ANALYSIS OF EXCHANGE INTERACTIONS IN [V2O(BIPY)4CL2]2+ COMPLEX
... of binuclear systems. ROHF+CI calculation give the order of states with different spin values (Fig. 5) similar to the Heisenberg model (Fig. 5 inserted picture) and even the energy differences between fi ...
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Ab initio study on the magnetostructural properties of MnAs
... a Heisenberg model the ex- change coupling constants are calculated for different dis- torted unit cells, and the Curie temperature and its depen- dence on the lattice parameters are evaluated in the mean- ...
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Violation of Cluster Property in Heisenberg Antiferromagnet
... for Heisenberg quantum spin on the square lattice, whose continuous symmetry is ...effective model which realizes the magneti- zation of the sub-lattices ...this model, we can present a definite ...
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Information Interpretation of Heisenberg Uncertainty Relation
... Heisenberg uncertainty relation is one of the fundamental principles of Quan- tum Mechanics. On the other hand, an information approach to Quantum Me- chanics is popular now (for example, see [1] [2] [3]). In this ...
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Generalized analogs of the Heisenberg uncertainty inequality
... the Heisenberg uncertainty inequality for the Eu- clidean motion group M(n) is ...the Heisenberg uncertainty inequality for several general classes of nilpotent Lie groups for which the Hilbert-Schmidt norm ...
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A NOTE ON BENEDICKS’ THEOREM ON HEISENBERG GROUP
... the Heisenberg group is supported in a ‘thin set at infinity’ and the group Fourier transform f () is a rank one operator for each 0, then the function f is the zero ...
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Hypercomplex Representations of the Heisenberg Group and Mechanics
... In this paper we derive mathematical models for various physical setup from hypercomplex representations of the Heisenberg group. There are roots for such hypercomplex characters in the structure of ladder ...
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Long-range Heisenberg models in quasiperiodically driven crystals of trapped ions
... mark that, in order to obtain an analytical expression for even larger interaction ranges, one should take into account further terms in the approximation above Eq. (C5), which may be- come relevant for ...
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