Fadi Sun

Issuing Body

Mississippi State University


Ye, Jinwu

Committee Member

Koshka, Yaroslav

Committee Member

Clay, R. Torsten

Committee Member

Gwaltney, Steven R.

Committee Member

Arnoldus, Hendirk F.

Date of Degree


Original embargo terms

Visible to MSU only for 6 months||5/17/2021

Document Type

Dissertation - Open Access


Engineering/Applied Physics

Degree Name

Doctor of Philosophy


College of Arts and Sciences


Department of Physics and Astronomy


This dissertation is devoted to investigation of quantum chaos in the Sachdev-Ye-Kitaev (SYK) and supersymmetric SYK models. First, a unified minimal scheme is developed to classify quantum chaos in the SYK and supersymmetric SYK models and also work out the structure of the energy levels in one periodic table. The SYK with even q-body or supersymmetric SYK with odd q-body interaction, with N even or odd number of sites, are put on an equal footing in the minimal Hilbert space; N (mod 8), q (mod 4) double Bott periodicity, and a reflection relation are identified. Then, exact diagonalizations are performed to study both the bulk energy level statistics and hard-edge behaviors. Excellent agreements between the exact diagonalization results and the symmetry classifications are demonstrated. This compact and systematic method can be transformed to map out more complicated periodic tables of SYK models with more degrees of freedom, tensor models, or symmetry protected topological phases.



Sachdev-Ye-Kitaev models||Quantum Chaos||Random Systems||AdS-CFT Correspondence