2 citations · 2 across the 4 of their papers we have counts for
6 papers
Identifying slow relaxation in many-body quantum systems through state-graph geometry and state-graph heterogeneity
Heiko Georg Menzler, Tom Ben-Ami
We adapt tools from the theory of quantum random walks to investigate slow relaxation dynamics through the many-body state graph. Specifically, we construct a probe of heterogeneit…
Long-Range Pairing in the Kitaev Model: Krylov Subspace Signatures
Rishabh Jha, Heiko Georg Menzler
Krylov subspace methods quantify operator growth in quantum many-body systems through Lanczos coefficients that encode how operators spread under time evolution. Although these dia…
Graph-theory measures capture weak ergodicity breaking on large quantum systems
Heiko Georg Menzler, RafaÅ ÅwiÄtek, Mari Carmen Bañuls +1
We study the onset of weak ergodicity violations in closed quantum many-body systems and focus on cases in which they occur through a transition that is controlled by a model param…
Hybrid quantum-classical matrix-product state and Lanczos methods for electron-phonon systems with strong electronic correlations: Application to disordered systems coupled to Einstein phonons
Heiko Georg Menzler, Suman Mondal, Fabian Heidrich-Meisner
We present two quantum-classical hybrid methods for simulating the time-dependence of electron-phonon systems that treat electronic correlations numerically exactly and optical-pho…
Graph theory and tunable slow dynamics in quantum East Hamiltonians
Heiko Georg Menzler, Mari Carmen Bañuls, Fabian Heidrich-Meisner
We show how graph theory concepts can provide an insight into the origin of slow dynamics in systems with kinetic constraints. In particular, we observe that slow dynamics is relat…
Krylov Delocalization/Localization across Ergodicity Breaking
Heiko Georg Menzler, Rishabh Jha
Krylov complexity has recently gained attention where the growth of operator complexity in time is measured in terms of the off-diagonal operator Lanczos coefficients. The operator…