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Physical Review Letters

Volume 64, Issue 2

8 January 1990

Browse Issues:

LETTERS

General Physics

Holomorphic representation of a set of supercoherent canonical coordinates for a quantum oscillator with $x^{2 K}$ anharmonicity

J. S. Arponen and R. F. Bishop

Phys. Rev. Lett. 64, 111 (1990) - Published 8 January, 1990

Gravitation and Astrophysics

Bound-neutrino sphere and spontaneous neutrino-pair creation in cold neutron stars

Abraham Loeb

Phys. Rev. Lett. 64, 115 (1990) - Published 8 January, 1990

Cosmic-string evolution: A numerical simulation

B. Allen and E. P. S. Shellard

Phys. Rev. Lett. 64, 119 (1990) - Published 8 January, 1990

Dark matter, time-varying G, and a dilaton field

T. Damour, G. W. Gibbons, and C. Gundlach

Phys. Rev. Lett. 64, 123 (1990) - Published 8 January, 1990

Elementary Particles and Fields

Nonperturbative two-dimensional quantum gravity

David J. Gross and Alexander A. Migdal

Phys. Rev. Lett. 64, 127 (1990) - Published 8 January, 1990

Wormholes and Peccei-Quinn symmetries

Kiwoon Choi and R. Holman

Phys. Rev. Lett. 64, 131 (1990) - Published 8 January, 1990

Phenomenology and cosmology of extra generations of Higgs bosons

Kim Griest and Marc Sher

Phys. Rev. Lett. 64, 135 (1990) - Published 8 January, 1990

Chiral Schwinger model in terms of chiral bosonization

Koji Harada

Phys. Rev. Lett. 64, 139 (1990) - Published 8 January, 1990

Search for the top quark in the reaction p¯p→electron+jets at √s =1.8 TeV

F. Abe et al.

Phys. Rev. Lett. 64, 142 (1990) - Published 8 January, 1990

Search for new heavy quarks in electron-muon events at the Fermilab Tevatron Collider

F. Abe et al.

Phys. Rev. Lett. 64, 147 (1990) - Published 8 January, 1990

Measurement of the ratio σ(W→eν)/σ(Z→ee) in p¯p collisions at √s =1.8 TeV

F. Abe et al.

Phys. Rev. Lett. 64, 152 (1990) - Published 8 January, 1990

Two-jet differential cross section in pp¯ collisions at √s¯11.8 TeV

F. Abe et al.

Phys. Rev. Lett. 64, 157 (1990) - Published 8 January, 1990

Potential contribution to the ΔI=(1/2 rule in K→ππ

Nathan Isgur, Kim Maltman, John Weinstein, and Ted Barnes

Phys. Rev. Lett. 64, 161 (1990) - Published 8 January, 1990

Improved limit on the branching ratio of $K^{+}$ → $π^{+}$ $μ^{+}$ $e^{-}$

A. M. Lee, C. Alliegro, C. Campagnari, V. Chaloupka, P. S. Cooper, J. Egger, H. A. Gordon, N. J. Hadley, W. D. Herold, E. A. Jagel, H. Kaspar, D. M. Lazarus, H. J. Lubatti, P. Rehak, M. E. Zeller, and T. Zhao

Phys. Rev. Lett. 64, 165 (1990) - Published 8 January, 1990

Upper limit on the absolute branching fraction for $D_{s}^{+}$ →φ $π^{+}$

J. Adler et al.

Phys. Rev. Lett. 64, 169 (1990) - Published 8 January, 1990

Investigation of the electromagnetic structure of η and η’ mesons by two-photon interactions

H. Aihara et al.

Phys. Rev. Lett. 64, 172 (1990) - Published 8 January, 1990

Nuclear Physics

Measurement of np→d $π^{0}$ cross sections very near threshold

D. A. Hutcheon, E. Korkmaz, G. A. Moss, R. Abegg, N. E. Davison, G. W. R. Edwards, L. G. Greeniaus, D. Mack, C. A. Miller, W. C. Olsen, I. J. van Heerden, and Ye Yanlin

Phys. Rev. Lett. 64, 176 (1990) - Published 8 January, 1990

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, Etc.

Efficiency enhancement and optical guiding in a tapered high-power finite-pulse free-electron laser

B. Hafizi, A. Ting, P. Sprangle, and C. M. Tang

Phys. Rev. Lett. 64, 180 (1990) - Published 8 January, 1990

Dynamical regimes of directional viscous fingering: Spatiotemporal chaos and wave propagation

M. Rabaud, S. Michalland, and Y. Couder

Phys. Rev. Lett. 64, 184 (1990) - Published 8 January, 1990

Condensed Matter: Structure, Etc.

Dynamics of a 2D liquid on a periodic substrate: Rb in graphite

J. D. Fan, George Reiter, and S. C. Moss

Phys. Rev. Lett. 64, 188 (1990) - Published 8 January, 1990

Direct optical measurement of surface dielectric responses: Interrupted growth on (001) GaAs

D. E. Aspnes, Y. C. Chang, A. A. Studna, L. T. Florez, H. H. Farrell, and J. P. Harbison

Phys. Rev. Lett. 64, 192 (1990) - Published 8 January, 1990

Mechanism of internal gettering of interstitial impurities in Czochralski-grown silicon

Dieter Gilles, Eicke R. Weber, and SooKap Hahn

Phys. Rev. Lett. 64, 196 (1990) - Published 8 January, 1990

Real-space atomic structure of a two-dimensional decagonal quasicrystal

A. Refik Kortan, Russell S. Becker, F. A. Thiel, and H. S. Chen

Phys. Rev. Lett. 64, 200 (1990) - Published 8 January, 1990

New high-pressure phase transition in zirconium metal

Hui Xia, Steven J. Duclos, Arthur L. Ruoff, and Yogesh K. Vohra

Phys. Rev. Lett. 64, 204 (1990) - Published 8 January, 1990

Condensed Matter: Electronic Properties, Etc.

Two-state systems and the electronic structure of metal-semiconductor interfaces: A new unifying mechanism

Pierre Masri

Phys. Rev. Lett. 64, 208 (1990) - Published 8 January, 1990

Hall voltage collapse at filamentary current flow causing chaotic fluctuations in n-GaAs

A. Brandl, W. Kröninger, W. Prettl, and G. Obermair

Phys. Rev. Lett. 64, 212 (1990) - Published 8 January, 1990

Edge channels for the fractional quantum Hall effect

C. W. J. Beenakker

Phys. Rev. Lett. 64, 216 (1990) - Published 8 January, 1990

Edge states in the fractional-quantum-Hall-effect regime

A. H. MacDonald

Phys. Rev. Lett. 64, 220 (1990) - Published 8 January, 1990

Electron and nuclear magnetic relaxation in ${La}_{2}$ ${CuO}_{4}$ and related cuprates

Sudip Chakravarty and Raymond Orbach

Phys. Rev. Lett. 64, 224 (1990) - Published 8 January, 1990

Thermally activated phase slippage in high- $T_{c}$ grain-boundary Josephson junctions

R. Gross, P. Chaudhari, D. Dimos, A. Gupta, and G. Koren

Phys. Rev. Lett. 64, 228 (1990) - Published 8 January, 1990

Generalized flux phases for the t-J model: A variational Monte Carlo study

Shoudan Liang and Nandini Trivedi

Phys. Rev. Lett. 64, 232 (1990) - Published 8 January, 1990

COMMENTS

Comment on ‘‘Quantum noise in the parametric oscillator: From squeezed states to coherent-state superpositions’’

P. Kinsler and P. D. Drummond

Phys. Rev. Lett. 64, 236 (1990) - Published 8 January, 1990

Comment on ‘‘Theory of electronic diamagnetism in two-dimensional lattices’’

V. Nikos Nicopoulos and S. A. Trugman

Phys. Rev. Lett. 64, 237 (1990) - Published 8 January, 1990

ERRATA

Observation of the Transition State H $D_{2}^{‡}$ in Collisions, H+ $D_{2}$

B. A. Collings, J. C. Polanyi, M. A. Smith, A. Stolow, and A. W. Tarr

Phys. Rev. Lett. 64, 238 (1990) - Published 8 January, 1990

Critical Magnetic Field Dependence of Thermally Activated Surface Processes

U. Seifert and H. Wagner

Phys. Rev. Lett. 64, 238 (1990) - Published 8 January, 1990

Scattering and Bound States of Quasiparticles at the $A - B$ Phase Boundary of Superfluid ${}^{3}{He}$

N. Schopohl and D. Waxman

Phys. Rev. Lett. 64, 238 (1990) - Published 8 January, 1990