Non-equilibrium dynamics of one-dimensional isolated quantum systems

Roósz Gergő
Non-equilibrium dynamics of one-dimensional isolated quantum systems.
PhD, University of Szeged.
(2017)

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Abstract in foreign language

I investigated the quench dynamics of inhomogeneous quantum spin chains. Here quench means the sudden change of an external parameter. The system is initially in its ground state. After the change of the parameter the ground state is not an eigenstate of the new Hamiltonian and a non-trivial dynamics starts. The dynamics is investigated with free fermion techniques. Various types of inhomogeneities were considered, homogeneous system with local defect, quasi-periodic systems and a disordered model. The results are qualitatively described by a special quasi-classical theory.

Item Type: Thesis (PhD)
Creators: Roósz Gergő
Hungarian title label: Egydimenziós kvantumrendszerek nem egyensúlyi dinamikája
Title of the thesis in foreign language: Non-equilibrium dynamics of one-dimensional isolated quantum systems
Divisions: Doctoral School of Physics
Discipline label: természettudományok > fizikai tudományok
Defence date label: 2017. May 17.
Item ID: 3970
Identification Number: 3268414
doi: https://doi.org/10.14232/phd.3970
Date Deposited: 2017. Apr. 24. 14:51
Last Modified: 2017. Sep. 21. 09:51
Depository no.: B 6229
Supervisor label:
Supervisor Supervisor scientific name label
Dr Iglói Ferenc
DSc, egyetemi tanár, SZTE TTIK Elméleti Fizikai Tanszék
Reviewer label:
Reviewer name label Reviewer scientific name label
Dr. Legeza Örs
Dr. Varga Imre
DSc, tudományos tanácsadó, MTA Wigner FK Szilárdtestfizikai és Optikai Intézet
PhD, egyetemi docens, BME Elmléleti Fizika Tanszék
President label:
President name label President scientific name label
Dr. Maróti Péter
DSc, egyetemi tanár, SZTE ÁOK TTIK Orvosi Fizikai és Orvosi Informatikai Intézet
Member label:
Member name label Member scientific name label
Dr. Földi Péter
Dr. Czirják Attila
Phd, egyetemi docens, SZTE TTIK Elméleti Fizikai Tanszék
PhD, c. egyetemi docens, SZTE TTIK Elméleti Fizikai Tanszék
URI: http://doktori.bibl.u-szeged.hu/id/eprint/3970
Defence/Citable status: Defended.

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