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4 papers · 2 filters
Similarities and differences of typicality in quantum and classical systems
Peter Reimann, Nicolas Nessi
Typicality is a well-established and very general property of quantum many-body systems, referring to the phenomenon that the expectation values of any given observable are practic…
Escaping the Krylov space during finite precision Lanczos
J. Eckseler, M. Pieper, J. Schnack
The Lanczos algorithm, introduced by Cornelius Lanczos, has been known for a long time and is widely used in computational physics. While often employed to approximate extreme eige…
Particle pairing causes subdiffusion of heavy particles in the imbalanced Hubbard model
Mirko Daumann, Thomas Dahm
The imbalanced Hubbard model features a transition between dynamic regimes depending on the mass ratio and coupling strength between two different particle species. A slowdown of t…
Thermalization in a simple spin-chain model
Peter Reimann, Christian Eidecker-Dunkel
We consider the common spin-1/2 XX-model in one dimension with open boundary conditions and a large but finite number of spins. The system is in thermal equilibrium at times t<0, a…