Publications of Hajo LESCHKE 1999-1989 http://theorie1.physik.uni-erlangen.de/leschke/publ1.html

T. Hupfer, H. Leschke, S. Warzel:
Poissonian obstacles with Gaussian walls discriminate between classical and quantum Lifshits tailing in magnetic fields
Journal of Statistical Physics 97, 725-750 (1999)

B. Bodmann, H. Leschke, S. Warzel:
A rigorous path integral for quantum spin using flat-space Wiener regularization
Journal of Mathematical Physics 40, 2549-2559 (1999)

B. Bodmann, H. Leschke, S. Warzel:
A rigorous path-integral formula for quantum spin dynamics via planar Brownian motion
pp. 173-176 in:
Path Integrals from peV to TeV: 50 Years after Feynman's Paper
Editors: R. Casalbuoni, R.Giachetti, V.Tognetti, R. Vaia, P.Verrucchi
World Scientific, Singapore, 1999

W. Fischer, H. Leschke, P. Müller:
On the averaged quantum dynamics by white-noise Hamiltonians with and without dissipation
Annalen der Physik (Leipzig) 510 (= vol. 7 of the 8-th series), 59-100 (1998)
Reprinted on pp. 79-121 in:
Understanding Physics
Editor: A. K. Richter
Copernicus, Katlenburg-Lindau, 1998

M. Böhm, K. Broderix, H. Leschke:
Broadening of the lowest Landau level by a Gaussian random potential with an arbitrary correlation length: an efficient continued-fraction approach
Zeitschrift für Physik B 104, 111-115 (1997)

W. Fischer, H. Leschke, P. Müller:
Comment on `On the Coulomb potential in one dimension' by P Kurasov
Journal of Physics A: Mathematical and General 30, 5579-5581 (1997)

W. Fischer, T. Hupfer, H. Leschke, P. Müller:
Existence of the density of states for multi-dimensional continuum Schrödinger operators with Gaussian random potentials
Communications in Mathematical Physics 190, 133-141 (1997)

W. Fischer, T. Hupfer, H. Leschke, P. Müller:
Rigorous results on Schrödinger operators with certain Gaussian random potentials in multi-dimensional continuous space
pp. 105-112 in:
Differential Equations, Asymptotic Analysis, and Mathematical Physics
Editors: M. Demuth, B.-W. Schulze
Akademie-Verlag, Berlin 1997

G. Junker, H. Karl, H. Leschke:
Classical and quantum dynamics of the n-dimensional kicked rotator
Physics Letters A 226, 155-166 (1997)

G. Junker, H. Leschke, I. Zan:
Explicit thermostatics of Stanley's n-vector model on the harmonic chain by Fourier analysis
Physica A 237, 257-284 (1997)

W. Fischer, H. Leschke, P. Müller:
Towards localisation by Gaussian random potentials in multi-dimensional continuous space
Letters in Mathematical Physics 38, 343-348 (1996)

B. Bodmann, H. Leschke, S. Warzel:
Wiener integration for quantum systems: A unified approach to the Feynman-Kac formula
pp. 95-106 in:
Path Integrals: Dubna '96
Editors: V.S. Yarunin, M.A. Smondyrev
Joint Institute for Nuclear Research, Dubna 1996

K. Broderix, D. Hundertmark, W. Kirsch, H. Leschke:
The fate of Lifshits tails in magnetic fields
Journal of Statistical Physics 80, 1-22 (1995)

W. Fischer, H. Leschke, P. Müller:
The functional-analytic versus the functional-integral approach to quantum Hamiltonians: The one-dimensional hydrogen atom
Journal of Mathematical Physics 36, 2313-2323 (1995)

W. Fischer, H. Leschke, P. Müller:
How to get a lower bound on the polaron ground-state energy from the
path-integral representation ?
pp. 347-354 in:
Path Integrals in Physics
Editors: V. Sa-yakanit, J.-O. Berananda, W. Sritrakool
World Scientific, Singapore 1994

G. Junker, H. Leschke:
Exact thermostatic results for the n-vector model on the harmonic chain
International Journal of Modern Physics B 8, 3501-3506 (1994)

E.A. Kochetov, H. Leschke, M.A. Smondyrev:
Pekar-Fröhlich magneto-polarons: weak-coupling expansion and strong-field limit
pp. 251-267 in:
Polarons and Applications
Editor: V.D. Lakhno
Wiley, Chichester 1994

W. Fischer, H. Leschke, P. Müller:
Dynamics by white-noise Hamiltonians
Physical Review Letters 73, 1578-1581 (1994)

H. Fink, H. Leschke:
Comment on "Consistent interpretation of quantum mechanics using quantum trajectories"
Physical Review Letters 72, 1770 (1994)

M. Böhm, H. Leschke, M. Henneke, V.S. Viswanath, J. Stolze, G. Müller:
Spectral signature of quantum spin diffusion in dimensions d=1, 2, and 3
Physical Review B 49, 417-421 (1994)

W. Fischer, H. Leschke, P. Müller:
Path integration in quantum physics by changing the drift of the underlying diffusion process:
Applications of Legendre processes
Annals of Physics 227, 206-221 (1993)

M. Böhm, H. Leschke:
Dynamical aspects of spin chains at infinite temperature for different spin quantum numbers
Physica A 199, 116-136 (1993)        (Erratum: A 203, 328 (1994))

K. Kopinga, T. Delica, H. Leschke, I. Riedel:
Static properties of a ferromagnetic S=1/2 chain system with orthorhombic exchange anisotropy:
Comparison of numerical results and experimental data on [C6H11NH3]CuCl3
Physical Review B 47, 5447-5450 (1993)

W. Fischer, H. Leschke, P. Müller:
Path integration in quantum mechanics by changing drift and time
of the underlying diffusion process
pp. 259-267 in:
Path Integrals from meV to MeV: Tutzing '92
Editors: H. Grabert, A. Inomata, L.S. Schulman, U. Weiss
World Scientific, Singapore 1993

K. Broderix, D. Hundertmark, H. Leschke:
Self-averaging, decomposition and asymptotic properties of the density of
states for random Schrödinger operators with constant magnetic field
pp. 98-107 in:
Path Integrals from meV to MeV: Tutzing '92
Editors: H. Grabert, A. Inomata, L.S. Schulman, U. Weiss
World Scientific, Singapore 1993

G. Junker, H. Leschke:
Quasi-classical approximation to the quantum propagator of a periodically kicked particle on the real line
pp. 66-72 in:
Path Integrals from meV to MeV: Tutzing '92
Editors: H. Grabert, A. Inomata, L.S. Schulman, U. Weiss
World Scientific, Singapore 1993

H. Fink, H. Leschke:
Phase-space- and other representations of quantum mechanics - a unifying approach
pp. 416-419 in:
Classical and Quantum Systems - Foundations and Symmetries
Editors: H.D. Doebner, W. Scherer, F. Schroeck, Jr.
World Scientific, Singapore 1993

M. Böhm, R.W. Gerling, H. Leschke:
Comment on "Breakdown of hydrodynamics in the classical 1 D Heisenberg model"
Physical Review Letters 70, 248 (1993)

E.A. Kochetov, H. Leschke, M.A. Smondyrev:
Diagrammatic weak-coupling expansion for the magneto-polaron energy
Zeitschrift für Physik B 89, 177-186 (1992)

T. Delica, W.J.M. de Jonge, K. Kopinga, H. Leschke, H. Mikeska:
Static properties of CsNiF3: numerical results, experimental data and soliton bearing models
Journal of Magnetism and Magnetic Materials 104-107, 795-796 (1992)

W. Fischer, H. Leschke, P. Müller:
Changing dimension and time: two well-founded and practical techniques for path integration in quantum physics
Journal of Physics A: Mathematical and General 25, 3835-3853 (1992)

M. Böhm, H. Leschke:
Dynamic spin-pair correlations in a Heisenberg chain at infinite temperature based on an
extended short-time expansion
Journal of Physics A: Mathematical and General 25, 1043-1053 (1992)

G. Junker, H. Leschke:
Remarks on the quasi-classical propagator of area-preserving maps
Physica D 56, 135-150 (1992)

K. Broderix, N. Heldt, H. Leschke:
Exact widths and tails for Landau levels broadened by a random potential with an arbitrary correlation length
pp. 89-93 in:
High Magnetic Fields in Semiconductor Physics III
Editor: G. Landwehr
Springer-Verlag, Berlin 1992

T. Delica, W.J.M. de Jonge, K. Kopinga, H. Leschke, H.J. Mikeska:
Static properties of CsNiF3 : Comparison of numerical results, experimental data, and predictions from soliton-bearing models
Physical Review B 44, 11773-11783 (1991)

L. Müller, J. Stolze, H. Leschke, P. Nagel:
Classical and quantum phase-space behavior of a spin-boson system
Physical Review A 44, 1022-1033 (1991)

K. Broderix, N. Heldt, H. Leschke:
Exact results on Landau-level broadening
Journal of Physics A: Mathematical and General 24, L825-L831 (1991)

T. Delica, K. Kopinga, H. Leschke, K.K. Mon:
Thermal properties of chains of antiferromagnetically coupled spins with s=1:
Numerical evidence of the Haldane gap at nonzero temperatures.
Europhysics Letters 15, 55-61 (1991)

K. Broderix, N. Heldt, H. Leschke:
Weyl-invariant random Hamiltonians and their relation to translational-invariant random potentials on Landau levels
Journal of Physics A: Mathematical and General 23, 3945-3952 (1990)

T. Delica, H. Leschke:
Numerical transfer-kernel results for a classical spin chain with anisotropic exchange interaction and a magnetic field
Physica A 168, 768-780 (1990)

T. Delica, H. Leschke:
Formulation and numerical results of the transfer-matrix method for quantum spin chains
Physica A 168, 736-767 (1990)

K. Kopinga, T. Delica, H. Leschke:
Static properties of ferromagnetic quantum chains: Numerical results and experimental data on two S=1/2 systems
Journal of Applied Physics 67, 5599-5603 (1990)

K. Broderix, N. Heldt, H. Leschke:
Partition function and the density of states for an electron in the plane subjected
to a random potential and a magnetic field
Physical Review B 40, 7479-7486 (1989)

K. Kopinga, T. Delica, H. Leschke:
Static properties of an easy-plane ferromagnetic S=1/2 chain:
Comparison of numerical results and experimental data on [C6H11NH3]CuBr3
Physical Review B 40, 7239-7246 (1989)

K. Broderix, N. Heldt, H. Leschke:
Aspects of Landau-level broadening using the path integral representation
Il Nuovo Cimento D 11, 241-259 (1989)

K. Broderix, N. Heldt, H. Leschke:
On the consistency of approximations to the Landau-level broadening by random
potentials with large correlation length
pp. 76-79 in:
High Magnetic Fields in Semiconductor Physics II
Editor: G. Landwehr
Springer-Verlag, Berlin 1989

H. Leschke, S. Wonneberger:
Phase-space aspects of quantum partition functions
pp. 480-497 in:
Path Integrals from meV to MeV: Bangkok '89
Editors: V. Sa-yakanit,W. Sritrakool, J.-O. Berananda, M.C. Gutzwiller,
A. Inomata, S. Lundqvist, J.R. Klauder, L. Schulman
World Scientific, Singapore 1989

H. Leschke, S. Wonneberger:
Long-time asymptotics of diffusion in random media and related problems
Journal of Physics A: Mathematical and General 22, L1009-L1014 (1989)         (Corrigendum: A 23, 1475 (1990))