4 papers
Spectral and Entanglement Properties of the Random Exchange Heisenberg Chain
Yilun Gao, Rudolf A. Römer
We study the many-body localization problem in the non-abelian SU(2)-invariant random antiferromagnetic exchange model in 1D. Exact and sparse matrix diagonalization methods are us…
Real-space renormalisation approach to the Chalker-Coddington model revisited: improved statistics
Syl Shaw, Rudolf A. Römer
The real-space renormalisation group method can be applied to the Chalker-Coddington model of the quantum Hall transition to provide a convenient numerical estimation of the locali…
Phase determination with and without deep learning
Burak Çivitcioğlu, Rudolf A. Römer, Andreas Honecker
Detection of phase transitions is a critical task in statistical physics, traditionally pursued through analytic methods and direct numerical simulations. Recently, machine-learnin…
Quantum engineering for compactly localized states in disordered Lieb lattices
Carlo Danieli, Jie Liu, Rudolf A. Römer
Blending ordering within an uncorrelated disorder potential in families of 3D Lieb lattices preserves the macroscopic degeneracy of compact localized states and yields unconvention…