Volume 66, Issue 18

6 May 1991

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LETTERS

Gravitation and Astrophysics

Complex Kerr-Newman geometry and black-hole thermodynamics

J. David Brown, Erik A. Martinez, and James W. York, Jr.

Phys. Rev. Lett. 66, 2281 (1991) - Published 6 May, 1991

Elementary Particles and Fields

Nuclear dependence of the production of Υ resonances at 800 GeV

D. M. Alde, H. W. Baer, T. A. Carey, G. T. Garvey, A. Klein, C. Lee, M. J. Leitch, J. W. Lillberg, P. L. McGaughey, C. S. Mishra, J. M. Moss, J. C. Peng, C. N. Brown, W. E. Cooper, Y. B. Hsiung, M. R. Adams, R. Guo, D. M. Kaplan, R. L. McCarthy, G. Danner, M. J. Wang, M. L. Barlett, and G. W. Hoffmann

Phys. Rev. Lett. 66, 2285 (1991) - Published 6 May, 1991

Nuclear Physics

Stopping in ultrarelativistic heavy-ion collisions and color screening

Leonid Frankfurt and Mark Strikman

Phys. Rev. Lett. 66, 2289 (1991) - Published 6 May, 1991

Neutron-proton spin-correlation parameter $A_{z z}$ at 68 MeV

M. Hammans, C. Brogli-Gysin, S. Burzynski, J. Campbell, P. Haffter, R. Henneck, W. Lorenzon, M. A. Pickar, I. Sick, J. A. Konter, S. Mango, and B. van den Brandt

Phys. Rev. Lett. 66, 2293 (1991) - Published 6 May, 1991

Atomic, Molecular, and Optical Physics

Atomic velocity selection using stimulated Raman transitions

Mark Kasevich, David S. Weiss, Erling Riis, Kathryn Moler, Steven Kasapi, and Steven Chu

Phys. Rev. Lett. 66, 2297 (1991) - Published 6 May, 1991

Limits of Doppler cooling in pulsed laser fields

Klaus Mølmer

Phys. Rev. Lett. 66, 2301 (1991) - Published 6 May, 1991

Validity of time-dependent Hartree-Fock theory for the multiphoton ionization of atoms

M. S. Pindzola, D. C. Griffin, and C. Bottcher

Phys. Rev. Lett. 66, 2305 (1991) - Published 6 May, 1991

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, Etc.

Inverse-scattering transform of stimulated Raman and Brillouin scattering in the quasi-steady-state regime

D. N. Ghosh Roy and D. V. G. L. N. Rao

Phys. Rev. Lett. 66, 2308 (1991) - Published 6 May, 1991

Electron-beam cooling by stimulated synchrotron emission and absorption

J. L. Hirshfield and G. S. Park

Phys. Rev. Lett. 66, 2312 (1991) - Published 6 May, 1991

Small-amplitude periodic and chaotic solutions of the complex Ginzburg-Landau equation for a subcritical bifurcation

Wolfgang Schöpf and Lorenz Kramer

Phys. Rev. Lett. 66, 2316 (1991) - Published 6 May, 1991

Large-eddy simulation of the turbulent flow in the downstream region of a backward-facing step

A. Silveira Neto, D. Grand, O. Metais, and M. Lesieur

Phys. Rev. Lett. 66, 2320 (1991) - Published 6 May, 1991

Plasma and Beam Physics

Intensity scaling of stimulated Raman forward scattering in laser-produced plasmas

S. H. Batha, D. S. Montgomery, K. S. Bradley, R. P. Drake, Kent Estabrook, and B. A. Remington

Phys. Rev. Lett. 66, 2324 (1991) - Published 6 May, 1991

Excitation of large-amplitude ion-wave wake fields

Y. Nishida, T. Okazaki, N. Yugami, and T. Nagasawa

Phys. Rev. Lett. 66, 2328 (1991) - Published 6 May, 1991

Condensed Matter: Structure, Etc.

Anisotropic Laplacian growths: From diffusion-limited aggregates to dendritic fractals

A. Arneodo, F. Argoul, Y. Couder, and M. Rabaud

Phys. Rev. Lett. 66, 2332 (1991) - Published 6 May, 1991

Fixed scale transformation approach to the nature of relaxation clusters in self-organized criticality

L. Pietronero and W. R. Schneider

Phys. Rev. Lett. 66, 2336 (1991) - Published 6 May, 1991

Melting and the electronic absorption of benzene-argon clusters

Laurence E. Fried and Shaul Mukamel

Phys. Rev. Lett. 66, 2340 (1991) - Published 6 May, 1991

Spectral diffusion of optical transitions in doped polymer glasses below 1 K

K.-P. Müller and D. Haarer

Phys. Rev. Lett. 66, 2344 (1991) - Published 6 May, 1991

Kinetic growth with surface relaxation: Continuum versus atomistic models

Z.-W. Lai and S. Das Sarma

Phys. Rev. Lett. 66, 2348 (1991) - Published 6 May, 1991

Anisotropic surface diffusion of CO on Ni(110)

Xu-Dong Xiao, X. D. Zhu, W. Daum, and Y. R. Shen

Phys. Rev. Lett. 66, 2352 (1991) - Published 6 May, 1991

Observation of the silent soft phonon in β-quartz by means of hyper-Raman scattering

Yasuhisa Tezuka, Shik Shin, and Mareo Ishigame

Phys. Rev. Lett. 66, 2356 (1991) - Published 6 May, 1991

Deep state of hydrogen in crystalline silicon: Evidence for metastability

B. Holm, K. Bonde Nielsen, and B. Bech Nielsen

Phys. Rev. Lett. 66, 2360 (1991) - Published 6 May, 1991

Condensed Matter: Electronic Properties, Etc.

High-pressure effects on ultrafast-relaxation kinetics of excitons in polydiacetylene 4BCMU

B. C. Hess, G. S. Kanner, Z. V. Vardeny, and G. L. Baker

Phys. Rev. Lett. 66, 2364 (1991) - Published 6 May, 1991

Field-cooled and zero-field-cooled dielectric susceptibility in deuteron glasses

A. Levstik, C. Filipi, Z. Kutnjak, I. Levstik, R. Pirc, B. Tadić, and R. Blinc

Phys. Rev. Lett. 66, 2368 (1991) - Published 6 May, 1991

Dynamic Hall effect as a mechanism for self-sustained oscillations and chaos in semiconductors

G. Hüpper and E. Schöll

Phys. Rev. Lett. 66, 2372 (1991) - Published 6 May, 1991

Observation of strain-enhanced electron-spin polarization in photoemission from InGaAs

T. Maruyama, E. L. Garwin, R. Prepost, G. H. Zapalac, J. S. Smith, and J. D. Walker

Phys. Rev. Lett. 66, 2376 (1991) - Published 6 May, 1991

Conductance fluctuations of mesoscopic spin glasses

P. G. N. de Vegvar, L. P. Lévy, and T. A. Fulton

Phys. Rev. Lett. 66, 2380 (1991) - Published 6 May, 1991

Dilution-induced order in quasi-one-dimensional quantum antiferromagnets

Eugene F. Shender and Steven A. Kivelson

Phys. Rev. Lett. 66, 2384 (1991) - Published 6 May, 1991

Phase diagram of the one-dimensional t-J model

Masao Ogata, M. U. Luchini, S. Sorella, and F. F. Assaad

Phys. Rev. Lett. 66, 2388 (1991) - Published 6 May, 1991

Kosterlitz-Thouless transition in the smectic vortex state of a layered superconductor

Gianni Blatter, Boris I. Ivlev, and Jakob Rhyner

Phys. Rev. Lett. 66, 2392 (1991) - Published 6 May, 1991

Cross-Disciplinary Physics

Eigenvalues of covariance matrices: Application to neural-network learning

Yann Le Cun, Ido Kanter, and Sara A. Solla

Phys. Rev. Lett. 66, 2396 (1991) - Published 6 May, 1991

Streaming instability of aggregating slime mold amoebae

Herbert Levine and William Reynolds

Phys. Rev. Lett. 66, 2400 (1991) - Published 6 May, 1991

Vesicles of toroidal topology

Udo Seifert

Phys. Rev. Lett. 66, 2404 (1991) - Published 6 May, 1991

Enhanced concentration fluctuations in polymer solutions under shear flow

X.-L. Wu, D. J. Pine, and P. K. Dixon

Phys. Rev. Lett. 66, 2408 (1991) - Published 6 May, 1991

COMMENTS

Comment on ‘‘Localization of atoms in a three-dimensional standing wave’’

J. C. Camparo and R. P. Frueholz

Phys. Rev. Lett. 66, 2412 (1991) - Published 6 May, 1991

Westbrook et al. reply

C. I. Westbrook, R. N. Watts, C. E. Tanner, S. L. Rolston, W. D. Phillips, P. D. Lett, and P. L. Gould

Phys. Rev. Lett. 66, 2413 (1991) - Published 6 May, 1991

Comment on ‘‘Rapid low-temperature hopping of hydrogen in a pure metal: The ${ScH}_{x}$ system’’

Ryosuke Kadono and Robert F. Kiefl

Phys. Rev. Lett. 66, 2414 (1991) - Published 6 May, 1991

Anderson et al. reply

I. S. Anderson, N. F. Berk, J. J. Rush, T. J. Udovic, R. G. Barnes, A. Magerl, and D. Richter

Phys. Rev. Lett. 66, 2415 (1991) - Published 6 May, 1991

ERRATA

Erratum: Total hadronic cross section in $e^{+}$ $e^{-}$ annihilation at the four-loop level of perturbative QCD [Phys. Rev. Lett. 66, 560 (1991)]

Levan R. Surguladze and Mark A. Samuel

Phys. Rev. Lett. 66, 2416 (1991) - Published 6 May, 1991

Response of Manifolds Pinned by Quenched Impurities to Uniform and Random Perturbations

Yonathan Shapir

Phys. Rev. Lett. 66, 2416 (1991) - Published 6 May, 1991