Non-equilibrium dynamics of one-dimensional isolated quantum systems

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(2017) (Unpublished)

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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 (Doctoral thesis (PhD))
Creators: Roósz Gergő
Hungarian title: Egydimenziós kvantumrendszerek nem egyensúlyi dinamikája
Supervisor(s):
Supervisor
Position, academic title, institution
MTMT author ID
Iglói Ferenc
egyetemi tanár, DSc, SZTE TTIK Elméleti Fizikai Tanszék
10006990
Subjects: 01. Natural sciences > 01.03. Physical sciences
Divisions: Doctoral School of Physics
Discipline: Natural Sciences > Physics
Language: English
Date: 2017. May 17.
Item ID: 3970
MTMT identifier of the thesis: 3268414
doi: https://doi.org/10.14232/phd.3970
Date Deposited: 2017. Apr. 24. 14:51
Last Modified: 2020. May. 25. 11:20
Depository no.: B 6229
URI: https://doktori.bibl.u-szeged.hu/id/eprint/3970
Defence/Citable status: Defended.

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