The density matrix renormalization group
... fixed rank r that minimizes the Frobenius distance between the two matrices. It turn out, this is a well known problem, called the “low rank matrix approximation”. If we order the eigenvalues of the density matrix in descending order 1, 2,…,m,…, r we obtain r ...
... fixed rank r that minimizes the Frobenius distance between the two matrices. It turn out, this is a well known problem, called the “low rank matrix approximation”. If we order the eigenvalues of the density matrix in descending order 1, 2,…,m,…, r we obtain r ...
Quantized field description of rotor frequency
... 共RFDR兲 is presented. A distinction is made between the MAS spin Hamiltonian and the associated quantized field Hamiltonian. The interactions for a multispin system under MAS conditions are described in the rotor angle frame using quantum rotor dynamics. In this quasiclassical theoretical framework, ...
... 共RFDR兲 is presented. A distinction is made between the MAS spin Hamiltonian and the associated quantized field Hamiltonian. The interactions for a multispin system under MAS conditions are described in the rotor angle frame using quantum rotor dynamics. In this quasiclassical theoretical framework, ...
Read PDF - Physics (APS) - American Physical Society
... As in the noninteracting ring particle model, the lowest energy is obtained by minimizing l0 þ , for integral l0 . This will supply appropriate c~ . If is not an integer c l0 ð; tÞ will be a moving lump, and time-translation symmetry will have been spontaneously broken. If is half an odd integ ...
... As in the noninteracting ring particle model, the lowest energy is obtained by minimizing l0 þ , for integral l0 . This will supply appropriate c~ . If is not an integer c l0 ð; tÞ will be a moving lump, and time-translation symmetry will have been spontaneously broken. If is half an odd integ ...
