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Annalen - Contents 1997/4

Annalen der Physik

Table of Contents - Volume 6, Issue No. 4 (1997)


Ann. Physik 6 (1997) 263 - 286

Coherent tunneling of lithium defect pairs in KCl crystals

R. Weis1, C. Enss2, A. Würger2, and F. Luty 3

1Institut für Angewandte Physik, Universität Heidelberg, Albert-Überle-Str. 3-5, D-69120 Heidelberg, Germany
2Institut Laue-Langevin, B.P.156, 38042 Grenoble Cedex 9, France
3Department of Physics, University of Utah, Salt Lake City, USA

Received 8 August 1996, final version 27 January 1997, accepted 27 January 1997

Keywords: Tunneling states; Rotary echoes; Isotope effect.


Ann. Physik 6 (1997) 287 - 316

Effective Hamiltonian for scalar theories in the Gaussian approximation

H.W.L. Naus1, T. Gasenzer1 and H.-J. Pirner1

1Institut für Theoretische Physik, Universität Heidelberg, Philosophenweg 16, D-69120 Heidelberg, Germany

Received 22 October 1996, revised version 13 January 1997, accepted 31 January 1997

Keywords: Hamiltonian field theory; Variational approach; Spontaneous symmetry breaking


Ann. Physik 6 (1997) 317 - 326

Rapid evaluation of oscillating lattice sums

P.J. Jensen1

1Hahn-Meitner-Institut, Glienicker Str. 100, D-14109 Berlin, Germany, and Department of Condensed Matter Physics, Royal Institut of Technology, S-100044 Stockholm, Sweden

Received 25 September 1996, revised version 17 February 1997, accepted 21 February 1997

Keywords: Lattice Summation; Dipole Interaction; Demagnetizing energy


Ann. Physik 6 (1997) 327 - 338

Spin depolarization of spreading and propagating wave packets

H.M. Krenzlin1 and K.W. Kehr1

1Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany

Received 7 November 1996, accepted 31 January 1997

Keywords: Spreading and propagating of wave packets; Spin relaxation; Disorderd Larmor frequencies


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