Volume 63, Issue 10

4 September 1989

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LETTERS

General Physics

Test of the linearity of quantum mechanics by rf spectroscopy of the ${}^{9}{Be}^{+}$ ground state

J. J. Bollinger, D. J. Heinzen, Wayne M. Itano, S. L. Gilbert, and D. J. Wineland

Phys. Rev. Lett. 63, 1031 (1989) - Published 4 September, 1989

Gravitation and Astrophysics

Burst of TeV γ rays from SN 1987A: Cosmic storage rings?

V. S. Berezinsky and Todor Stanev

Phys. Rev. Lett. 63, 1035 (1989) - Published 4 September, 1989

Model dependence of astrophysical lower bounds on the neutrino mass

John P. Ralston

Phys. Rev. Lett. 63, 1038 (1989) - Published 4 September, 1989

Elementary Particles and Fields

Radiative quark and lepton masses in a left-right gauge model

Ernest Ma

Phys. Rev. Lett. 63, 1042 (1989) - Published 4 September, 1989

New proposal for closed-string field theory: The free-string case

S.-H. Henry Tye

Phys. Rev. Lett. 63, 1046 (1989) - Published 4 September, 1989

Nuclear Physics

β-decay anisotropies of the mirror nuclei ${}^{15}O$ and ${}^{17}F$

N. Severijns, J. Wouters, J. Vanhaverbeke, and L. Vanneste

Phys. Rev. Lett. 63, 1050 (1989) - Published 4 September, 1989

Atomic, Molecular, and Optical Physics

Observation of participator Auger decay following valence photoionization with excitation

U. Becker, R. Wehlitz, O. Hemmers, B. Langer, and A. Menzel

Phys. Rev. Lett. 63, 1054 (1989) - Published 4 September, 1989

Resonantly enhanced above-threshold ionization of helium

M. D. Perry, A. Szoke, and K. C. Kulander

Phys. Rev. Lett. 63, 1058 (1989) - Published 4 September, 1989

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, Etc.

Absolute instability competition and suppression in a millimeter-wave gyrotron traveling-wave tube

Larry R. Barnett, Lung Hai Chang, Han Ying Chen, Kwo Ray Chu, Wai Keung Lau, and Chuan Cheng Tu

Phys. Rev. Lett. 63, 1062 (1989) - Published 4 September, 1989

Compact short-wavelength free-electron laser

David B. Chang and James C. McDaniel

Phys. Rev. Lett. 63, 1066 (1989) - Published 4 September, 1989

Condensed Matter: Structure, Etc.

Steady-state nucleation in a binary mixture: The effect of stirring

K. Y. Min, J. Stavans, R. Piazza, and W. I. Goldburg

Phys. Rev. Lett. 63, 1070 (1989) - Published 4 September, 1989

Interaction between grafted polymeric brushes: A molecular-dynamics study

Michael Murat and Gary S. Grest

Phys. Rev. Lett. 63, 1074 (1989) - Published 4 September, 1989

Nucleation of bubbles in liquid helium at negative pressure

Humphrey J. Maris and Quan Xiong

Phys. Rev. Lett. 63, 1078 (1989) - Published 4 September, 1989

Nonlinear elasticity of amorphous solids

Leonardo Golubović and T. C. Lubensky

Phys. Rev. Lett. 63, 1082 (1989) - Published 4 September, 1989

Mechanism of the CO-induced 1×2→1×1 structural transformation of Pt(110)

T. Gritsch, D. Coulman, R. J. Behm, and G. Ertl

Phys. Rev. Lett. 63, 1086 (1989) - Published 4 September, 1989

Properties of hydrogen in crystalline silicon under compression and tension

C. S. Nichols and D. R. Clarke

Phys. Rev. Lett. 63, 1090 (1989) - Published 4 September, 1989

Condensed Matter: Electronic Properties, Etc.

Molecular-dynamics calculation of the recombination cross section at ionized impurities in semiconductors

Lino Reggiani, Luca Varani, Vladimir Mitin, and Carolyne M. VanVliet

Phys. Rev. Lett. 63, 1094 (1989) - Published 4 September, 1989

Fractional Quantum Hall Effect with an Added Parallel Magnetic Field

J. E. Furneaux, D. A. Syphers, and A. G. Swanson

Phys. Rev. Lett. 63, 1098 (1989) - Published 4 September, 1989

Exchange enhancement of a spin-polarized 2D electron gas determined by optical-absorption spectroscopy

B. B. Goldberg, D. Heiman, and A. Pinczuk

Phys. Rev. Lett. 63, 1102 (1989) - Published 4 September, 1989

Thermal fluctuation and melting of the vortex lattice in oxide superconductors

E. H. Brandt

Phys. Rev. Lett. 63, 1106 (1989) - Published 4 September, 1989

Ground-state energies of the nonlinear σ model and the Heisenberg spin chains

Shoucheng Zhang, H. J. Schulz, and Timothy Ziman

Phys. Rev. Lett. 63, 1110 (1989) - Published 4 September, 1989

COMMENTS

Nonlinear variants of Schrödinger’s equation violate the second law of thermodynamics

Asher Peres

Phys. Rev. Lett. 63, 1114 (1989) - Published 4 September, 1989

Weinberg replies

Steven Weinberg

Phys. Rev. Lett. 63, 1115 (1989) - Published 4 September, 1989

Comment on ‘‘Local deviations from the Grodzins systematics: Enhanced collectivity in the transitional Ra-Th nuclei’’

S. Raman

Phys. Rev. Lett. 63, 1116 (1989) - Published 4 September, 1989

Gai replies

Moshe Gai

Phys. Rev. Lett. 63, 1117 (1989) - Published 4 September, 1989

Comment on ‘‘Accurate structure-factor phase determination by electron diffraction in noncentrosymmetric crystals’’

David M. Bird, Dick James, and Quentin A. King

Phys. Rev. Lett. 63, 1118 (1989) - Published 4 September, 1989

Spence, Zuo and Hoier reply

J. C. H. Spence, J. M. Zuo, and R. Hoier

Phys. Rev. Lett. 63, 1119 (1989) - Published 4 September, 1989

ERRATA

Magnetic Dynamics of ${La}_{2}$ Cu $O_{4}$ and ${La}_{2 - x} {Ba}_{x} Cu O_{4}$

G. Aeppli, S. M. Hayden, H. A. Mook, Z. Fisk, S- W. Cheong, D. Rytz, J. P. Remeika, G. P. Espinosa, and A. S. Cooper

Phys. Rev. Lett. 63, 1120 (1989) - Published 4 September, 1989