434 research outputs found
Quasi-particle excitations in dynamical response of two-dimensional electrons in strong magnetic field(Abstracts of Doctoral Dissertations,Annual Report(from April 2001 to March 2002))
Get PDFFormulation and Application of Quantum Monte Carlo Method to Fractional Quantum Hall Systems
Full text linkQuantum Monte Carlo method is applied to fractional quantum Hall systems. The
use of the linear programming method enables us to avoid the negative-sign
problem in the Quantum Monte Carlo calculations. The formulation of this method
and the technique for avoiding the sign problem are described. Some numerical
results on static physical quantities are also reported.Comment: Proceedings of The 15th International Conference on Electronic
Properties of Two-Dimensional Systems (EP2DS-15
NMR relaxation of quantum spin chains in magnetic fields
Full text linkWe investigate NMR relaxation rates 1/T_1 of quantum spin chains in magnetic
fields. Universal properties for the divergence behavior of 1/T_1 are obtained
in the Tomonaga-Luttinger-liquid state. The results are discussed in comparison
with experimental results.Comment: 5 pages, 3 figure
- …
