Multifractality in aperiodic quantum spin chains.
VOLIOTIS, Dimitrios.
VOLIOTIS, Dimitrios.
 Abstract: Recently, it has been investigated that the ground-state wavefunction of the one dimensional quantum spin-1/2 chain models is multifractal in general with non-trivial fractal dimension. We are studying this phenomena for the quantum Ising chain with aperiodic perturbation. By performing a block realspace renormalization approach, we obtain the ground-state wave function and we extract the generalized multifractal dimension and the multifractal spectrum. For a spin chain with negative wandering exponent the multifractal quantities have the same behavior with the unperturbed chain while for a spin chain with a vanishing wandering exponent, are dependent on the coupling ratio. Finally, for a spin chain with a positive wandering exponent, the multifractal quantities present a different non-linear behavior. | |
| Journal of Physics A |
| v. 52, n. 47, p. 475001-1-475001-19 - Ano: 2019 |
| Fator de Impacto: 2,110 |
| http://dx.doi.org/10.1088/1751-8121/ab4b63 |  @article={002979804,author = {VOLIOTIS, Dimitrios.},title={Multifractality in aperiodic quantum spin chains},journal={Journal of Physics A},note={v. 52, n. 47, p. 475001-1-475001-19},year={2019}} |