Volume 65, Issue 20

12 November 1990

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LETTERS

Gravitation and Astrophysics

Direct probes of neutrino properties using solar-neutrino lines

Sandip Pakvasa and James Pantaleone

Phys. Rev. Lett. 65, 2479 (1990) - Published 12 November, 1990

Elementary Particles and Fields

Geometric formulation of nonperturbative 2D quantum gravity

Rolf Schimmrigk

Phys. Rev. Lett. 65, 2483 (1990) - Published 12 November, 1990

Braid of strings

Hideyuki Câteau and Satoru Saito

Phys. Rev. Lett. 65, 2487 (1990) - Published 12 November, 1990

On the existence of a phase transition for QCD with three light quarks

Frank R. Brown, Frank P. Butler, Hong Chen, Norman H. Christ, Zhihua Dong, Wendy Schaffer, Leo I. Unger, and Alessandro Vaccarino

Phys. Rev. Lett. 65, 2491 (1990) - Published 12 November, 1990

Conformal invariance at a deconfinement phase transition in (2+1) dimensions

J. Christensen and P. H. Damgaard

Phys. Rev. Lett. 65, 2495 (1990) - Published 12 November, 1990

CP nonconservation in supersymmetry with radiative quark masses

Ernest Ma and Daniel Ng

Phys. Rev. Lett. 65, 2499 (1990) - Published 12 November, 1990

Photon-gluon-fusion analysis of charm photoproduction

J. C. Anjos et al.

Phys. Rev. Lett. 65, 2503 (1990) - Published 12 November, 1990

Partial-wave analysis of J/ψ→γ $K_{S}^{0}$ $K^{\pm}$ $π^{\mp}$

Z. Bai et al.

Phys. Rev. Lett. 65, 2507 (1990) - Published 12 November, 1990

Parton distributions from an operator viewpoint

Aneesh V. Manohar

Phys. Rev. Lett. 65, 2511 (1990) - Published 12 November, 1990

Nuclear Physics

Orbital magnetic dipole strength in ${}^{148, 150, 152, 154}{Sm}$ and nuclear deformation

W. Ziegler, C. Rangacharyulu, A. Richter, and C. Spieler

Phys. Rev. Lett. 65, 2515 (1990) - Published 12 November, 1990

New evidence for meson-exchange-current enhancement of isovector M1 strength

A. Richter, A. Weiss, O. Haüsser, and B. A. Brown

Phys. Rev. Lett. 65, 2519 (1990) - Published 12 November, 1990

Oblate deformed shapes of hot rotating nuclei deduced from giant-dipole-resonance decay studies

J. H. Gundlach, K. A. Snover, J. A. Behr, C. A. Gossett, M. Kicinska-Habior, and K. T. Lesko

Phys. Rev. Lett. 65, 2523 (1990) - Published 12 November, 1990

Orientation fluctuations and the angular distribution of the giant-dipole-resonance γ rays in hot rotating nuclei

Y. Alhassid and B. Bush

Phys. Rev. Lett. 65, 2527 (1990) - Published 12 November, 1990

Atomic, Molecular, and Optical Physics

Experimental evidence of chaotic itinerancy and spatiotemporal chaos in optics

F. T. Arecchi, G. Giacomelli, P. L. Ramazza, and S. Residori

Phys. Rev. Lett. 65, 2531 (1990) - Published 12 November, 1990

Velocity-modulation Fourier-transform spectroscopy of molecular ions

P. A. Martin and G. Guelachvili

Phys. Rev. Lett. 65, 2535 (1990) - Published 12 November, 1990

Precise experimental test of calculated two-electron Lamb shifts in helium

Craig J. Sansonetti, J. D. Gillaspy, and C. L. Cromer

Phys. Rev. Lett. 65, 2539 (1990) - Published 12 November, 1990

Plasma and Beam Physics

Evidence for confinement improvement by velocity-shear suppression of edge turbulence

Ch. P. Ritz, H. Lin, T. L. Rhodes, and A. J. Wootton

Phys. Rev. Lett. 65, 2543 (1990) - Published 12 November, 1990

Condensed Matter: Structure, Etc.

Self-orgainzed criticality and singular diffusion

J. M. Carlson, J. T. Chayes, E. R. Grannan, and G. H. Swindle

Phys. Rev. Lett. 65, 2547 (1990) - Published 12 November, 1990

Exactly solvable model for cantorus phase transitions

Robert B. Griffiths, H. J. Schellnhuber, and H. Urbschat

Phys. Rev. Lett. 65, 2551 (1990) - Published 12 November, 1990

Formation energy of excess arsenic atoms in n-type GaAs

Jun-ichi Nishizawa, Yutaka Oyama, and Kazushi Dezaki

Phys. Rev. Lett. 65, 2555 (1990) - Published 12 November, 1990

Stable dense icosahedral quasicrystals

Z. Olami

Phys. Rev. Lett. 65, 2559 (1990) - Published 12 November, 1990

Lattice-gas virial coefficients from isothermal desorption measurements: CO on Cu(001) and Cu(011)

L. D. Peterson and S. D. Kevan

Phys. Rev. Lett. 65, 2563 (1990) - Published 12 November, 1990

Liquid-vapor critical point of ${}^{4}{He}$ in aerogel

Apollo P. Y. Wong and M. H. W. Chan

Phys. Rev. Lett. 65, 2567 (1990) - Published 12 November, 1990

Thermodynamic and kinetic justification for amorphization by mechanical alloying of A-B metal couples with zero heat of mixing Δ $H_{mix}$

A. R. Yavari and P. J. Desré

Phys. Rev. Lett. 65, 2571 (1990) - Published 12 November, 1990

Diatomic-hydrogen-complex dissociation: A microscopic model for metastable defect generation in Si

S. B. Zhang, W. B. Jackson, and D. J. Chadi

Phys. Rev. Lett. 65, 2575 (1990) - Published 12 November, 1990

Condensed Matter: Electronic Properties, Etc.

Evidence for weak localization in the thermal conductivity of a quasi-two-dimensional electron system

V. Bayot, L. Piraux, J. P. Michenaud, and J. P. Issi

Phys. Rev. Lett. 65, 2579 (1990) - Published 12 November, 1990

Dislocation-mediated vortex-lattice melting in thin films of a- ${Nb}_{3}$ Ge

P. Berghuis, A. L. F. van der Slot, and P. H. Kes

Phys. Rev. Lett. 65, 2583 (1990) - Published 12 November, 1990

Motion of a Bloch domain wall

Djemoui Bouzidi and Harry Suhl

Phys. Rev. Lett. 65, 2587 (1990) - Published 12 November, 1990

Laser production of large nuclear-spin polarization in frozen xenon

G. D. Cates, D. R. Benton, M. Gatzke, W. Happer, K. C. Hasson, and N. R. Newbury

Phys. Rev. Lett. 65, 2591 (1990) - Published 12 November, 1990

Flux-flow resistance in frustrated Josephson-junction arrays

Ying-Hong Li and S. Teitel

Phys. Rev. Lett. 65, 2595 (1990) - Published 12 November, 1990

Perpendicular versus in-plane magnetization in a 2D Heisenberg monolayer at finite temperatures

D. Pescia and V. L. Pokrovsky

Phys. Rev. Lett. 65, 2599 (1990) - Published 12 November, 1990

Cross-Disciplinary Physics

Novel acoustic excitations in suspensions of hard-sphere colloids

J. Liu, L. Ye, D. A. Weitz, and Ping Sheng

Phys. Rev. Lett. 65, 2602 (1990) - Published 12 November, 1990

COMMENTS

Comment on ‘‘Stochastic resonance in bistable systems’’

M. I. Dykman, R. Mannella, P. V. E. McClintock, and N. G. Stocks

Phys. Rev. Lett. 65, 2606 (1990) - Published 12 November, 1990

Gammaitoni et al. reply

L. Gammaitoni, F. Marchesoni, E. Menichella-Saetta, and S. Santucci

Phys. Rev. Lett. 65, 2607 (1990) - Published 12 November, 1990

Interpretation of the exchange-correlation potential of the density-functional theory

Á. Nagy

Phys. Rev. Lett. 65, 2608 (1990) - Published 12 November, 1990

Harbola and Sahni reply

M. K. Harbola and V. Sahni

Phys. Rev. Lett. 65, 2609 (1990) - Published 12 November, 1990

Direct transition energies in strained ten-monolayer Ge/Si superlattices

Uwe Schmid, Niels E. Christensen, and Manuel Cardona

Phys. Rev. Lett. 65, 2610 (1990) - Published 12 November, 1990

Zachai et al. reply

R. Zachai, K. Eberl, G. Abstreiter, E. Kasper, and H. Kibbel

Phys. Rev. Lett. 65, 2611 (1990) - Published 12 November, 1990

Comment on heat-capacity and sticking measurements of ${}^{4}{He}$ adsorbed on evaporated Ag films: Bose statistics in two dimentions

P. Taborek

Phys. Rev. Lett. 65, 2612 (1990) - Published 12 November, 1990

ERRATA

Explanation of the Apparent Sublinear Photoconductivity of Photorefractive Barium Titanate

Daniel Mahgerefteh and Jack Feinberg

Phys. Rev. Lett. 65, 2613 (1990) - Published 12 November, 1990

Effect of leads and energy gap upon the retrapping current of josephson junctions

A. T. Johnson, C. J. Lobb, and M. Tinkham

Phys. Rev. Lett. 65, 2613 (1990) - Published 12 November, 1990