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28 papers · 1 filter
Global Existence of Bell's Time-Inhomogeneous Jump Process for Lattice Quantum Field Theory
Hans-Otto Georgii, Roderich Tumulka
We consider the time-inhomogeneous Markovian jump process introduced by John S. Bell [Phys.Rep. 137, 49] for a lattice quantum field theory, which runs on the associated configurat…
PBW bases for a class of braided Hopf algebras
Stefan Ufer
We prove the existence of a basis of Poincare-Birkhoff-Witt type for braided Hopf algebras R generated by a braided subspace V of P(R) if the braiding on V fulfils a triangularity…
Spectral stability of the Coulomb-Dirac Hamiltonian with anomalous magnetic moment
Hubert Kalf, Karl Michael Schmidt
We show that the point spectrum of the standard Coulomb-Dirac operator H_0 is the limit of the point spectrum of the Dirac operator with anomalous magnetic moment H_a as the anomal…
On the Role of Density Matrices in Bohmian Mechanics
Detlef Duerr, Sheldon Goldstein, Roderich Tumulka +1
It is well known that density matrices can be used in quantum mechanics to represent the information available to an observer about either a system with a random wave function (``s…
The integrated density of states for an interacting multielectron homogeneous model
Frederic Klopp, Heribert Zenk
For a system of n interacting electrons moving in the background of a "homogeneous" potential, we show that, if the single electron Hamiltonian admits a density of states, so does…
Spatial correlations of trapped 1d bosons in an optical lattice
C. Kollath, U. Schollwöck, J. von Delft +1
We investigate a quasi-one dimensional system of trapped cold bosonic atoms in an optical lattice by using the density matrix renormalization group to study the Bose-Hubbard model…