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DY: Fachverband Dynamik und Statistische Physik

DY 43: Poster Session: Quantum Chaos and Many-Body Dynamics

DY 43.6: Poster

Donnerstag, 8. September 2022, 15:00–18:00, P2

Time evolution in the one-magnon subspace of the sawtooth chain at the quantum-critical point. — •Jannis Eckseler and Jürgen Schnack — Fakultät für Physik, Universität Bielefeld, Postfach 100131, D-33501 Bielefeld, Germany

It is known for the sawtooth chain to develop a flat band at the quantum-critical point of J₁=2J₂ [1]. We are looking at the time evolution of several observables in the one-magnon subspace of the sawtooth chain, especially near that point.

[1] J. Schulenburg, A. Honecker, J. Schnack, J. Richter, H.-J. Schmidt, Phys. Rev. Lett. 88 (2002) 167207