Volume 75, Issue 11

11 September 1995

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LETTERS

General Physics

Quantum Phase of Induced Dipoles Moving in a Magnetic Field

Haiqing Wei, Rushan Han, and Xiuqing Wei

Phys. Rev. Lett. 75, 2071 (1995) - Published 11 September, 1995

Gravitation and Astrophysics

Origin of Ashtekar's Variables in a Pure-Connection Theory of Gravity

D. M. Kerrick

Phys. Rev. Lett. 75, 2074 (1995) - Published 11 September, 1995

Cosmology with Ultralight Pseudo Nambu-Goldstone Bosons

Joshua A. Frieman, Christopher T. Hill, Albert Stebbins, and Ioav Waga

Phys. Rev. Lett. 75, 2077 (1995) - Published 11 September, 1995

Elementary Particles and Fields

( $2 + 1$ )-Dimensional QED and a Novel Phase Transition

Thomas Appelquist, John Terning, and L. C. R. Wijewardhana

Phys. Rev. Lett. 75, 2081 (1995) - Published 11 September, 1995

Two Phases of Supersymmetric Gluodynamics

Ian I. Kogan and Mikhail Shifman

Phys. Rev. Lett. 75, 2085 (1995) - Published 11 September, 1995

An SO(10) Solution to the Puzzle of Quark and Lepton Masses

K. S. Babu and S. M. Barr

Phys. Rev. Lett. 75, 2088 (1995) - Published 11 September, 1995

Proton Spin Structure from Lattice QCD

M. Fukugita, Y. Kuramashi, M. Okawa, and A. Ukawa

Phys. Rev. Lett. 75, 2092 (1995) - Published 11 September, 1995

Flavor-Singlet $g_{A}$ from Lattice QCD

S. J. Dong, J.-F. Lagaë, and K. F. Liu

Phys. Rev. Lett. 75, 2096 (1995) - Published 11 September, 1995

Nuclear Physics

Fragment Flow in Au $+$ Au Collisions

M. D. Partlan et al. (EOS Collaboration)

Phys. Rev. Lett. 75, 2100 (1995) - Published 11 September, 1995

Atomic, Molecular, and Optical Physics

First Principles Study of Photoelectron Spectra of ${Cu}_{n}^{-}$ Clusters

Carlo Massobrio, Alfredo Pasquarello, and Roberto Car

Phys. Rev. Lett. 75, 2104 (1995) - Published 11 September, 1995

Resonance Sidepath in Muon Catalyzed Fusion

P. Froelich and J. Wallenius

Phys. Rev. Lett. 75, 2108 (1995) - Published 11 September, 1995

Photofragmentation of $C_{60}$ Molecules following Resonance Excitation and Ionization near the C $1 s$ Edge

S. Aksela, E. Nõmmiste, J. Jauhiainen, E. Kukk, J. Karvonen, H. G. Berry, S. L. Sorensen, and H. Aksela

Phys. Rev. Lett. 75, 2112 (1995) - Published 11 September, 1995

Highly Amplitude-Squeezed States of the Radiation Field

Kasivishwanathan Sundar

Phys. Rev. Lett. 75, 2116 (1995) - Published 11 September, 1995

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, Etc.

Organization of Sequences of Bifurcations of Periodic Orbits

D. A. Sadovskií, J. A. Shaw, and J. B. Delos

Phys. Rev. Lett. 75, 2120 (1995) - Published 11 September, 1995

Detecting Periodic Unstable Points in Noisy Chaotic and Limit Cycle Attractors with Applications to Biology

David Pierson and Frank Moss

Phys. Rev. Lett. 75, 2124 (1995) - Published 11 September, 1995

“Negative-Viscosity” Effect in a Magnetic Fluid

J.-C. Bacri, R. Perzynski, M. I. Shliomis, and G. I. Burde

Phys. Rev. Lett. 75, 2128 (1995) - Published 11 September, 1995

Viscous Finger Widening with Surfactants and Polymers

D. Bonn, H. Kellay, M. Ben Amar, and J. Meunier

Phys. Rev. Lett. 75, 2132 (1995) - Published 11 September, 1995

Spatial Structure and Field-Line Diffusion in Transverse Magnetic Turbulence

W. H. Matthaeus, P. C. Gray, D. H. Pontius, Jr., and J. W. Bieber

Phys. Rev. Lett. 75, 2136 (1995) - Published 11 September, 1995

Condensed Matter: Structure, Etc.

Local Uniaxial Order in a Grafted Polymer Melt via Deuterium NMR

M. Zeghal, P. Auroy, and B. Deloche

Phys. Rev. Lett. 75, 2140 (1995) - Published 11 September, 1995

Orientation of Amphiphilic Molecules on Polar Substrates

X. Zhuang, D. Wilk, L. Marrucci, and Y. R. Shen

Phys. Rev. Lett. 75, 2144 (1995) - Published 11 September, 1995

Diffusion of Monolayer Adatom and Vacancy Clusters: Langevin Analysis and Monte Carlo Simulations of their Brownian Motion

S. V. Khare, N. C. Bartelt, and T. L. Einstein

Phys. Rev. Lett. 75, 2148 (1995) - Published 11 September, 1995

Domain Coarsening in Systems Far from Equilibrium

M. C. Cross and D. I. Meiron

Phys. Rev. Lett. 75, 2152 (1995) - Published 11 September, 1995

Model of the Kinetics of Polymorphous Crystallization

B. Morin, K. R. Elder, M. Sutton, and Martin Grant

Phys. Rev. Lett. 75, 2156 (1995) - Published 11 September, 1995

Prediction and Observation of the bcc Structure in Pure Copper at a $Σ$ 3 Grain Boundary

C. Schmidt, F. Ernst, M. W. Finnis, and V. Vitek

Phys. Rev. Lett. 75, 2160 (1995) - Published 11 September, 1995

Kinematic Scaling and Crossover to Scale Invariance in Martensite Growth

Madan Rao, Surajit Sengupta, and H. K. Sahu

Phys. Rev. Lett. 75, 2164 (1995) - Published 11 September, 1995

Diffusion Limited Growth in Systems with Continuous Symmetry

Umberto Marini Bettolo Marconi and Andrea Crisanti

Phys. Rev. Lett. 75, 2168 (1995) - Published 11 September, 1995

Atomic Structure of Si(111)- $(5 \times 2)$ -Au from High Resolution Electron Microscopy and Heavy-Atom Holography

L. D. Marks and R. Plass

Phys. Rev. Lett. 75, 2172 (1995) - Published 11 September, 1995

Symmetry Controlled Surface Photochemistry of Methane on Pt(111)

Jun Yoshinobu, Hirohito Ogasawara, and Maki Kawai

Phys. Rev. Lett. 75, 2176 (1995) - Published 11 September, 1995

Condensed Matter: Electronic Properties, Etc.

Heterocrystalline Structures: New Types of Superlattices?

Friedhelm Bechstedt and Peter Käckell

Phys. Rev. Lett. 75, 2180 (1995) - Published 11 September, 1995

Simple Description of the Anisotropic Two-Channel Kondo Problem

P. Coleman and A. J. Schofield

Phys. Rev. Lett. 75, 2184 (1995) - Published 11 September, 1995

Exciton–LO-Phonon Quantum Kinetics: Evidence of Memory Effects in Bulk GaAs

L. Bányai, D. B. Tran Thoai, E. Reitsamer, H. Haug, D. Steinbach, M. U. Wehner, M. Wegener, T. Marschner, and W. Stolz

Phys. Rev. Lett. 75, 2188 (1995) - Published 11 September, 1995

Dynamical Percolation Model of Conductance Fluctuations in Hydrogenated Amorphous Silicon

Lisa M. Lust and J. Kakalios

Phys. Rev. Lett. 75, 2192 (1995) - Published 11 September, 1995

Exact Nonequilibrium dc Shot Noise in Luttinger Liquids and Fractional Quantum Hall Devices

P. Fendley, A. W. W. Ludwig, and H. Saleur

Phys. Rev. Lett. 75, 2196 (1995) - Published 11 September, 1995

Ginzburg-Landau Theory of Vortices in $d$ -Wave Superconductors

A. J. Berlinsky, A. L. Fetter, M. Franz, C. Kallin, and P. I. Soininen

Phys. Rev. Lett. 75, 2200 (1995) - Published 11 September, 1995

Spin-Glass Behavior in L $a_{1.96}$ S $r_{0.04}$ Cu $O_{4}$

F. C. Chou, N. R. Belk, M. A. Kastner, R. J. Birgeneau, and Amnon Aharony

Phys. Rev. Lett. 75, 2204 (1995) - Published 11 September, 1995

Interacting Flux Lines in a Random Medium

Harald Kinzelbach and Michael Lässig

Phys. Rev. Lett. 75, 2208 (1995) - Published 11 September, 1995

Spin Correlations and Magnetic Field Effects in the Weakly Anisotropic Square-Lattice Antiferromagnet ${Sr}_{2} {CuO}_{2} {Cl}_{2}$

B. J. Suh, F. Borsa, L. L. Miller, M. Corti, D. C. Johnston, and D. R. Torgeson

Phys. Rev. Lett. 75, 2212 (1995) - Published 11 September, 1995

Phase Transfer in Time-Delayed Interferometry with Nuclear Resonant Scattering

Y. Hasegawa, Y. Yoda, K. Izumi, T. Ishikawa, S. Kikuta, X. W. Zhang, and M. Ando

Phys. Rev. Lett. 75, 2216 (1995) - Published 11 September, 1995

Isotope Effect of Pairs of Coupled Tunneling Systems

R. Weis, C. Enss, B. Leinböck, G. Weiss, and S. Hunklinger

Phys. Rev. Lett. 75, 2220 (1995) - Published 11 September, 1995

New Magnetic Linear Dichroism in Total Photoelectron Yield for Magnetic Domain Imaging

F. U. Hillebrecht, T. Kinoshita, D. Spanke, J. Dresselhaus, Ch. Roth, H. B. Rose, and E. Kisker

Phys. Rev. Lett. 75, 2224 (1995) - Published 11 September, 1995

Auger and Coulomb Charging Effects in Semiconductor Nanocrystallites

C. Delerue, M. Lannoo, G. Allan, E. Martin, I. Mihalcescu, J. C. Vial, R. Romestain, F. Muller, and A. Bsiesy

Phys. Rev. Lett. 75, 2228 (1995) - Published 11 September, 1995

Cross-Disciplinary Physics

Reentrant Melting in Laser Field Modulated Colloidal Suspensions

J. Chakrabarti, H. R. Krishnamurthy, A. K. Sood, and S. Sengupta

Phys. Rev. Lett. 75, 2232 (1995) - Published 11 September, 1995

Gelation of a Clay Colloid Suspension

M. Dijkstra, J. P. Hansen, and P.A. Madden

Phys. Rev. Lett. 75, 2236 (1995) - Published 11 September, 1995

Effect of Nonlocal Interactions on Soliton Dynamics in Anharmonic Lattices

Yuri Gaididei, Nikos Flytzanis, Andreas Neuper, and Franz G. Mertens

Phys. Rev. Lett. 75, 2240 (1995) - Published 11 September, 1995

Quantitative Comparison between Differential Adhesion Models and Cell Sorting in the Presence and Absence of Fluctuations

José C. M. Mombach, James A. Glazier, Richard C. Raphael, and Mark Zajac

Phys. Rev. Lett. 75, 2244 (1995) - Published 11 September, 1995

COMMENTS

Comment on “Fate of the Delocalized States in a Vanishing Magnetic Field”

A. A. Shashkin, G. V. Kravchenko, V. T. Dolgopolov, S. V. Kravchenko, and J. E. Furneaux

Phys. Rev. Lett. 75, 2248 (1995) - Published 11 September, 1995

Glozman, Johnson, and Jiang Reply:

I. Glozman, C. E. Johnson, and H. W. Jiang

Phys. Rev. Lett. 75, 2249 (1995) - Published 11 September, 1995

Comment on “Scaling Anomalies in Reaction Front Dynamics of Confined Systems”

Stephen J. Cornell

Phys. Rev. Lett. 75, 2250 (1995) - Published 11 September, 1995

Araujo et al. Reply:

Mariela Araujo, Hernan Larralde, Shlomo Havlin, and H. Eugene Stanley

Phys. Rev. Lett. 75, 2251 (1995) - Published 11 September, 1995

Comment on “Scaling of Transient Hydrodynamic Interactions in Concentrated Suspensions”

E. G. D. Cohen and I. M. de Schepper

Phys. Rev. Lett. 75, 2252 (1995) - Published 11 September, 1995

Weitz and Ladd Reply:

D. A. Weitz and Anthony J. C. Ladd

Phys. Rev. Lett. 75, 2253 (1995) - Published 11 September, 1995

ERRATA

Density of Levels in a Generalized Matrix Ensemble

M. Kreynin and B. Shapiro

Phys. Rev. Lett. 75, 2254 (1995) - Published 11 September, 1995