Volume 70, Issue 11

15 March 1993

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LETTERS

General Physics

Droplet singularity

D. B. Abraham and P. J. Upton

Phys. Rev. Lett. 70, 1567 (1993) - Published 15 March, 1993

Gravitation and Astrophysics

Escape of gravitational radiation from the field of massive bodies

Richard H. Price, Jorge Pullin, and Prasun K. Kundu

Phys. Rev. Lett. 70, 1572 (1993) - Published 15 March, 1993

There are no $R^{3}$ × $S^{1}$ vacuum gravitational instantons

Niall Ó Murchadha and Hugh Shanahan

Phys. Rev. Lett. 70, 1576 (1993) - Published 15 March, 1993

Smallest universe of negative curvature

Helio V. Fagundes

Phys. Rev. Lett. 70, 1579 (1993) - Published 15 March, 1993

Elementary Particles and Fields

Nonperturbative solutions of string theory in gravitational backgrounds

Octávio A. Mattos and Victor O. Rivelles

Phys. Rev. Lett. 70, 1583 (1993) - Published 15 March, 1993

Critical constraints on chiral hierarchies

R. Sekhar Chivukula, Mitchell Golden, and Elizabeth H. Simmons

Phys. Rev. Lett. 70, 1587 (1993) - Published 15 March, 1993

Study of the decay $K_{L}$ → $π^{\pm}$ $π^{0}$ $e^{\mp}$ ν¯(ν)

G. Makoff et al.

Phys. Rev. Lett. 70, 1591 (1993) - Published 15 March, 1993

Atomic, Molecular, and Optical Physics

Effects of intramolecular dynamics on nuclear fusion rates and sticking from resonant states of the molecular ion dtμ

P. Froelich and A. Flores-Riveros

Phys. Rev. Lett. 70, 1595 (1993) - Published 15 March, 1993

Above threshold ionization beyond the high harmonic cutoff

K. J. Schafer, Baorui Yang, L. F. DiMauro, and K. C. Kulander

Phys. Rev. Lett. 70, 1599 (1993) - Published 15 March, 1993

Interfering entangled photons of different colors

T. S. Larchuk, R. A. Campos, J. G. Rarity, P. R. Tapster, E. Jakeman, B. E. A. Saleh, and M. C. Teich

Phys. Rev. Lett. 70, 1603 (1993) - Published 15 March, 1993

Excess noise in a focused-gain amplifier

P. R. Battle, J. G. Wessel, and J. L. Carlsten

Phys. Rev. Lett. 70, 1607 (1993) - Published 15 March, 1993

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, Etc.

Nonrecurrent quantum states: Systems with singular-continuous and discrete spectra

Avijit Lahiri

Phys. Rev. Lett. 70, 1611 (1993) - Published 15 March, 1993

Origin of narrow resonances in the diamagnetic Rydberg spectrum

B. Grémaud, D. Delande, and J. C. Gay

Phys. Rev. Lett. 70, 1615 (1993) - Published 15 March, 1993

Clustering instability in dissipative gases

I. Goldhirsch and G. Zanetti

Phys. Rev. Lett. 70, 1619 (1993) - Published 15 March, 1993

Plasma and Beam Physics

High-current ion-ring accelerator

R. N. Sudan

Phys. Rev. Lett. 70, 1623 (1993) - Published 15 March, 1993

Nonlinear dynamics of the m=1 instability and fast sawtooth collapse in high-temperature plasmas

Xiaogang Wang and A. Bhattacharjee

Phys. Rev. Lett. 70, 1627 (1993) - Published 15 March, 1993

Condensed Matter: Structure, Etc.

Electric field inhibition and promotion of exchange diffusion on Pt(001)

G. L. Kellogg

Phys. Rev. Lett. 70, 1631 (1993) - Published 15 March, 1993

Stoichiometry, percolation, and Verwey ordering in magnetite

R. Aragón, P. M. Gehring, and S. M. Shapiro

Phys. Rev. Lett. 70, 1635 (1993) - Published 15 March, 1993

Off-center atomic displacements in zinc-blende semiconductor

Su-Huai Wei, S. B. Zhang, and Alex Zunger

Phys. Rev. Lett. 70, 1639 (1993) - Published 15 March, 1993

Equilibrium shape of Si

D. J. Eaglesham, A. E. White, L. C. Feldman, N. Moriya, and D. C. Jacobson

Phys. Rev. Lett. 70, 1643 (1993) - Published 15 March, 1993

Spectral dimension of branched structures: Universality in geometrical disorder

Davide Cassi and Sofia Regina

Phys. Rev. Lett. 70, 1647 (1993) - Published 15 March, 1993

Topology and nematic ordering

Paul E. Lammert, Daniel S. Rokhsar, and John Toner

Phys. Rev. Lett. 70, 1650 (1993) - Published 15 March, 1993

Defect chemical potential and the density of states in amorphous silicon

S. C. Deane and M. J. Powell

Phys. Rev. Lett. 70, 1654 (1993) - Published 15 March, 1993

Isotropic and aligned stripe phases in a monomolecular organic film

M. Seul and V. S. Chen

Phys. Rev. Lett. 70, 1658 (1993) - Published 15 March, 1993

Experimental study of smoothing kinetics on a rough surface

J.-K. Zuo and J. F. Wendelken

Phys. Rev. Lett. 70, 1662 (1993) - Published 15 March, 1993

Condensed Matter: Electronic Properties, Etc.

Mott transition in the d=∞ Hubbard model at zero temperature

X. Y. Zhang, M. J. Rozenberg, and G. Kotliar

Phys. Rev. Lett. 70, 1666 (1993) - Published 15 March, 1993

Periodic Anderson model in infinite dimensions

M. Jarrell, Hossein Akhlaghpour, and Th. Pruschke

Phys. Rev. Lett. 70, 1670 (1993) - Published 15 March, 1993

Motion of a classical polaron in a dc electric field

L. Bányai

Phys. Rev. Lett. 70, 1674 (1993) - Published 15 March, 1993

Persistent spin and mass currents and Aharonov-Casher effect

A. V. Balatsky and B. L. Altshuler

Phys. Rev. Lett. 70, 1678 (1993) - Published 15 March, 1993

Reduced exciton-exciton scattering in quantum wires

M. Oestreich, W. W. Rühle, H. Lage, D. Heitmann, and K. Ploog

Phys. Rev. Lett. 70, 1682 (1993) - Published 15 March, 1993

First-principles calculations of many-body band-gap narrowing at an Al/GaAs(110) interface

J. P. A. Charlesworth, R. W. Godby, and R. J. Needs

Phys. Rev. Lett. 70, 1685 (1993) - Published 15 March, 1993

Accidental Near Degeneracy of the Order Parameter for Superconducting U ${Pt}_{3}$

Ding-Chuan Chen and Anupam Garg

Phys. Rev. Lett. 70, 1689 (1993) - Published 15 March, 1993

Interlayer tunneling model for the c-axis resistivity in high-temperature superconductors

K. E. Gray and D. H. Kim

Phys. Rev. Lett. 70, 1693 (1993) - Published 15 March, 1993

Universal relationship between $T_{c}$ and the hole content in p-type cuprate superconductors

Huanbo Zhang and Hiroshi Sato

Phys. Rev. Lett. 70, 1697 (1993) - Published 15 March, 1993

Size effect on variable-range-hopping transport in ${PrBa}_{2}$ ${Cu}_{3}$ $O_{7 - x}$

U. Kabasawa, Y. Tarutani, M. Okamoto, T. Fukazawa, A. Tsukamoto, M. Hiratani, and K. Takagi

Phys. Rev. Lett. 70, 1700 (1993) - Published 15 March, 1993

Temperature correlations of quantum spins

A. R. Its, A. G. Izergin, V. E. Korepin, and N. A. Slavnov

Phys. Rev. Lett. 70, 1704 (1993) - Published 15 March, 1993

Microwave magnetic-envelope dark solitons in yttrium iron garnet thin films

Ming Chen, Mincho A. Tsankov, Jon M. Nash, and Carl E. Patton

Phys. Rev. Lett. 70, 1707 (1993) - Published 15 March, 1993

Dependence on Fermi surface dimensions of oscillatory exchange coupling in Co/ ${Cu}_{1 - x}$ ${Ni}_{x}$ (110) multilayers

S. N. Okuno and K. Inomata

Phys. Rev. Lett. 70, 1711 (1993) - Published 15 March, 1993

Vibrational band modes in germanium: Isotopic disorder-induced Raman scattering

H. D. Fuchs, P. Etchegoin, M. Cardona, K. Itoh, and E. E. Haller

Phys. Rev. Lett. 70, 1715 (1993) - Published 15 March, 1993

Surface shift of the unoccupied 4f state in La metal

A. V. Fedorov, C. Laubschat, K. Starke, E. Weschke, K.-U. Barholz, and G. Kaindl

Phys. Rev. Lett. 70, 1719 (1993) - Published 15 March, 1993

Cross-Disciplinary Physics

Relationship between stress and dangling bond generation at the (111)Si/ ${SiO}_{2}$ interface

A. Stesmans

Phys. Rev. Lett. 70, 1723 (1993) - Published 15 March, 1993

Relaxations in gels: Analogies to α and β relaxations in glasses

S. Z. Ren and C. M. Sorensen

Phys. Rev. Lett. 70, 1727 (1993) - Published 15 March, 1993

COMMENTS

Comment on ‘‘Refelection high-energy diffraction oscillations during epitaxial growth of high-temperature superconducting oxides’’

J. Hasen, D. Lederman, and Ivan K. Schuller

Phys. Rev. Lett. 70, 1731 (1993) - Published 15 March, 1993

Terashima and Bando reply

T. Terashima and Y. Bando

Phys. Rev. Lett. 70, 1732 (1993) - Published 15 March, 1993

ERRATA

Perpendicular Transport through Magnetic Multilayers

Gerrit E. W. Bauer

Phys. Rev. Lett. 70, 1733 (1993) - Published 15 March, 1993

Cosmic Microwave Background Probes Models of Inflation

Richard L. Davis, Hardy M. Hodges, George F. Smoot, Paul J. Steinhardt, and Michael S. Turner

Phys. Rev. Lett. 70, 1733 (1993) - Published 15 March, 1993