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Helvetica Physica Acta

Helvetica Physica Acta Volume 55 (1982)
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Issue 1 1
Article: On the S-operator for the external field problem of QED 1
Article: Numerical study of a long range Ising spin-glass : exact results for small samples and Monte-Carlo simulations 29
Article: Some applications of the Birman-Schwinger principle 49
Article: Single-particle energies in enlarged shell-model spaces 69
Article: Measurement of the average and longitudinal recoil polarizations in the reaction 12C(μ^-, ν)^12B(g.s.) : pseudoscalar coupling and neutrino helicity 74
Article: A high angular resolution 2-D correlation apparatus for positron annihilation studies 100
Issue 2 123
Association News: Rapport de la réunion de printemps 1982 de la Société Suisse de Physique 123
Table of Contents 254
Issue 3 259
Article: Droplet dynamics in the two-dimensional kinetic Ising model 259
Article: Quantum mechanical representations of canonical transformations given by a generating function 278
Article: Approximants de Borel 295
Article: On a non-unitary evolution of quantum systems 330
Article: Evaluation of transient amplitudes between Dirac spinors 339
Article: Einkristalle der Hydride der Seltenen Erden : die thermodynamischen Aspekte 348
Article: Sm3S4-Sm2S3 eine Mischkristallreihe mit gemischter Valenz 351
Article: On the turbulence in a magnetized plasma and its influence on the magnetoacoustic resonance 354
Cahier 4 381
Article: Sur la tension superficielle de l'hélium liquide He^4 au voisinage du point λ 381
Article: On Bose condensation 391
Article: Complete set of commuting operators for N spins s with rotational and permutational symmetry 400
Article: Quarks with Q^2 dependent effective masses as a confinement effect 417
Article: The Ginzburg Landau free energy for a Josephson array 468
Article: Single and coincident neutron emission after the absorption of stopped negative pions in 6Li, 7Li, 12C, 59Co and 197Au 477
Cahier 5 501
Article: Le professeur Jean-Pierre Blaser a 60 ans 501
Article: Daniel Bernoulli (1700-1782) 504
Informations des associations: Rapport de la réunion d'automne de la Société Suisse de Physique (SSP), Bâle, 7 et 8 octobre 1982 524
Table des matières 621
Cahier 6 625
Table des matières 625
Article: Zum 60. Geburtstag von Jörgen Lykke Olsen 626
Article: Low-temperatur physics in Switzerland : a historical review 628
Article: Study of impurity states in a n-n GaAs-AlGaAs heterojunction using cyclotron resonance and Shubnikov-De Haas experiments 637
Article: Superconducting critical fields of copper in proximity with Nb-Ti 647
Article: Locked and unlocked phases of a two-dimensional lattice of superconducting vortices 655
Article: Size effects on electron transport in multifilament superconducting wires 669
Article: Magnetische Anisotropie im organischen Supraleiter (TMTSF)_2ClO_4 675
Article: Low temperature structural and magnetic properties of PrPb_3 688
Article: Effect of anharmonicity and Debye-Waller factor on the superconductivity of PdH_x and PdD_x 699
Article: Unsteady He^4 convection and related quantum constraints 711
Article: Magnetokardiographische Beobachtungen am menschlichen Herz 720
Article: Scanning tunneling microscopy 726
Article: Anisotropy of electron impurity scattering in dilute Al(Li) 736
Article: Superconducting parameters of a strongly anisotropic intercalated TaS_2 compound : K_0.33(H_2O)_0.66TaS_2 755
Table des matières 765
Index: Author's index = Autorenregister = Table des auteurs 775