Advanced search
Start date
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Multifractality in aperiodic quantum spin chains

Full text
Voliotis, Dimitrios
Total Authors: 1
Document type: Journal article
Source: Journal of Physics A-Mathematical and Theoretical; v. 52, n. 47 NOV 22 2019.
Web of Science Citations: 0

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 real-space 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. (AU)

FAPESP's process: 17/11484-0 - Dynamics of quantum quenched disordered spin chains
Grantee:Dimitrios Voliotis
Support type: Scholarships in Brazil - Post-Doctorate