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papers

Publications (20)

math-ph2013

A new model for quantum dot light emitting-absorbing devices

Hagen Neidhardt, Lukas Wilhelm, Valentin Zagrebnov

math-ph2014

Point contacts and boundary triples

Vladimir Lotoreichik, Hagen Neidhardt, Igor Yu. Popov

math-ph2007

The effect of time-dependent coupling on non-equilibrium steady states

Horia D. Cornean, Hagen Neidhardt, Valentin A. Zagrebnov

math.FA2016

Convergence rate estimates for Trotter product approximations of solution operators for non-autonomous Cauchy problems

Hagen Neidhardt, Artur Stephan, Valentin A. Zagrebnov

math-ph2012

Schrödinger operators with concentric $δ$-shells

Sergio Albeverio, Aleksey Kostenko, Mark Malamud +1

math-ph2008

A Kohn-Sham system at zero temperature

Horia Cornean, Kurt Hoke, Hagen Neidhardt +2

math.FA2017

A trace formula for functions of contractions and analytic operator Lipschitz functions

Mark Malamud, Hagen Neidhardt, Vladimir Peller

math-ph2009

On the unitary equivalence of absolutely continuous parts of self-adjoint extensions

Mark M. Malamud, Hagen Neidhardt

math-ph2007

Linear non-autonomous Cauchy problems and evolution semigroups

Hagen Neidhardt, Valentin A. Zagrebnov

math-ph2006

Scattering matrices and Weyl functions

Jussi Behrndt, Mark M. Malamud, Hagen Neidhardt

math-ph2007

Trace formulae for dissipative and coupled scattering systems

Jussi Behrndt, Mark M. Malamud, Hagen Neidhardt

math-ph2012

Perturbation determinants and trace formulas for singular perturbations

Mark M. Malamud, Hagen Neidhardt

math-ph2012

Cayley transform applied to non-interacting quantum transport

Horia D. Cornean, Hagen Neidhardt, Lukas Wilhelm +1

math-ph2017

Remarks on the operator-norm convergence of the Trotter product formula

Hagen Neidhardt, Artur Stephan, Valentin A. Zagrebnov

math.AP2007

Classical solutions of drift-diffusion equations for semiconductor devices: the 2d case

Hans-Christoph Kaiser, Hagen Neidhardt, Joachim Rehberg

math-ph2011

Sturm-Liouville boundary value problems with operator potentials and unitary equivalence

Mark Malamud, Hagen Neidhardt

math-ph2016

Scattering matrices and Dirichlet-to-Neumann maps

Jussi Behrndt, Mark M. Malamud, Hagen Neidhardt

math-ph2014

On the spectrum of the lattice spin-boson Hamiltonian for any coupling: 1D case

Mukhiddin Muminov, Hagen Neidhardt, Tulkin Rasulov

math-ph2009

Finite Rank Perturbations, Scattering Matrices and Inverse Problems

Jussi Behrndt, Mark M. Malamud, Hagen Neidhardt

math-ph2009

Trotter-Kato product formula for unitary groups

Pavel Exner, Hagen Neidhardt