Dynamics of quantum quenched disordered spin chains

• Grant number: 17/11484-0
• Support type: Scholarships in Brazil - Post-Doctorate
• Effective date (Start): September 01, 2017
• Effective date (End): August 31, 2019
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal researcher: José Abel Hoyos Neto
• Grantee: Dimitrios Voliotis
• Home Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Associated research grant: 15/23849-7 - Quantum spin chains, AP.TEM

Abstract

We intend to study many dynamical aspects of quantum spin chains in the presence of quenched disorder. Firstly, we plan to study the dynamical response of quantum spin chains in the low-temperature regime and in thermal equilibrium. This is important in order to correct interpret the NMR and muon-SR experimental data. Secondly, we plan to study the time evolution of these systems in the far-from-equilibrium regime where they are effectively isolated from any thermal bath. In this case, the system may evolve towards a non-ergodic state depending on the disorder strength. This is the dynamical phase transition we intend to investigate.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

VOLIOTIS, DIMITRIOS. Multifractality in aperiodic quantum spin chains. Journal of Physics A-Mathematical and Theoretical, v. 52, n. 47 NOV 22 2019. Web of Science Citations: 0.