Non-equilibrium dynamics of one-dimensional isolated quantum systems

Roósz Gergő
Non-equilibrium dynamics of one-dimensional isolated quantum systems.
[Thesis] (Unpublished)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 (Doktori értekezés)
Creators: Roósz Gergő
Magyar cím: Egydimenziós kvantumrendszerek nem egyensúlyi dinamikája
Divisions: Doctoral School of Physics
Tudományterület / tudományág: Natural Sciences > Physics
Nyelv: English
Date: 2017. May 17.
Item ID: 3970
A mű MTMT azonosítója: 3268414
Date Deposited: 2017. Apr. 24. 14:51
Last Modified: 2020. May. 25. 11:20
Depository no.: B 6229
Defence/Citable status: Defended.

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