• LETTERS
  • General Physics
  • Gravitation and Astrophysics
  • Elementary Particles and Fields
  • Nuclear Physics
  • Atomic, Molecular, and Optical Physics
  • Fundamental Phenomenology and Applications
  • Condensed Matter: Structure, Etc.
  • Condensed Matter: Electronic Properties, Etc.
• COMMENTS

•	Supersymmetry and Bistable Soft Potentials Fabio Marchesoni, Pasquale Sodano, and Marco Zannetti pp. 1143-1146 [View   PDF (550 kB) ]

•	Trapped Surfaces in Spherical Stars Piotr Bizon, Edward Malec, and Niall O'Murchadha pp. 1147-1150 [View   PDF (438 kB) ]

•	Limits on the Variability of G Using Binary-Pulsar Data Thibault Damour, Gary W. Gibbons, and Joseph H. Taylor pp. 1151-1154 [View   PDF (633 kB) ]

•	Knot Theory and Quantum Gravity Carlo Rovelli and Lee Smolin pp. 1155-1158 [View   PDF (659 kB) ]

•	Model-Independent Constraints on Possible Modifications of Newtonian Gravity C. Talmadge, J. -P. Berthias, R. W. Hellings, and E. M. Standish pp. 1159-1162 [View   PDF (567 kB) ]

•	Possible Phase Transitions among Calabi-Yau Compactifications Paul S. Green and Tristan Hübsch pp. 1163-1166 [View   PDF (588 kB) ]

•	Evidence against Perturbative QCD from Polarized Deep-Inelastic Scattering Giuliano Preparata and Jacques Soffer pp. 1167-1169 [View   PDF (425 kB)  See Also: Erratum]

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Investigation of the 12C(γ,pn) Reaction Using Tagged Photons S. N. Dancer, I. J. MacGregor, J. R. Annand, I. Anthony, G. I. Crawford, S. J. Hall, J. D. Kellie, J. C. McGeorge, R. O. Owens, P. A. Wallace, D. Branford, S. V. Springham, A. C. Shotter, B. Schoch, J. M. Vogt, R. Beck, and G. Liesenfeld pp. 1170-1173 [View   PDF (549 kB) ]

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Spin-Dependent Observables for the 12C(p,p′γ) Reaction at 400 MeV K. H. Hicks, R. Abegg, A. Celler, O. Häusser, R. S. Henderson, N. W. Hill, K. P. Jackson, R. G. Jeppesen, N. S. King, M. A. Kovash, R. Liljestrand, C. A. Miller, G. L. Morgan, J. R. Shepard, A. Trudel, M. Vetterli, and S. Yen pp. 1174-1177 [View   PDF (551 kB) ]

•	Neutron-Emission Spectra and Superdeformation in Light Nuclei J. J. Kolata, R. A. Kryger, P. A. DeYoung, and F. W. Prosser pp. 1178-1181 [View   PDF (633 kB) ]

•	High-Intensity Kapitza-Dirac Effect P. H. Bucksbaum, D. W. Schumacher, and M. Bashkansky pp. 1182-1185 [View   PDF (635 kB) ]

•	Observations of Two-Electron-Jump, Core-Changing X-Ray Transitions in Fluorinelike and Oxygenlike Lanthanum G. A. Chandler, D. D. Dietrich, M. H. Chen, R. J. Fortner, C. J. Hailey, and R. E. Stewart pp. 1186-1189 [View   PDF (645 kB) ]

•	Rigid-Fluid Transition in Specific-Size Argon Clusters Mee Y. Hahn and Robert L. Whetten pp. 1190-1193 [View   PDF (605 kB) ]

•	Negative-Ion Formation on Alkali-Metal Surfaces Yicheng Wang, M. A. Huels, D. R. Gallagher, L. D. Doverspike, and R. L. Champion pp. 1194-1197 [View   PDF (536 kB) ]

•	Competition between Different Symmetries in Convective Patterns S. Ciliberto, E. Pampaloni, and C. Pérez-García pp. 1198-1201 [View   PDF (665 kB)  See Also: Erratum]

•	Liquid-Crystalline and Helical Order in a Discotic Mesophase Ernest Fontes, Paul A. Heiney, and Wim H. de Jeu pp. 1202-1205 [View   PDF (551 kB) ]

•	High-Resolution X-Ray Measurements of the A Transition in the Polymeric Liquid Crystal P4.1 Polysiloxane Edward N. Keller, Rivka Halfon, Ehud Nachaliel, Dan Davidov, and Herbert Zimmermann pp. 1206-1209 [View   PDF (520 kB) ]

•	Measurements of Modulated Lamellar Pβ′ Phases of Interacting Lipid Membranes Daniel C. Wack and Watt W. Webb pp. 1210-1213 [View   PDF (631 kB) ]

•	Coherent Backscattering of Light in a Quasi-Two-Dimensional System Isaac Freund, Michael Rosenbluh, Richard Berkovits, and Moshe Kaveh pp. 1214-1217 [View   PDF (661 kB) ]

•	Neutralization of Very-Low-Energy Ions on Pt(100) Housei Akazawa and Yoshitada Murata pp. 1218-1221 [View   PDF (669 kB) ]

•	Stoner Transitions and Spin-Selective Excitations in bcc Cobalt Y. U. Idzerda, D. M. Lind, D. A. Papaconstantopoulos, G. A. Prinz, B. T. Jonker, and J. J. Krebs pp. 1222-1225 [View   PDF (669 kB) ]

•	Pulsed Propagation of Polariton Luminescence M. Kuwata, T. Kuga, H. Akiyama, T. Hirano, and M. Matsuoka pp. 1226-1228 [View   PDF (524 kB) ]

•	Theory of Interband Auger Recombination in n-type Silicon D. B. Laks, G. F. Neumark, A. Hangleiter, and S. T. Pantelides pp. 1229-1232 [View   PDF (649 kB) ]

•	Second-Harmonic Generation at Simple Metal Surfaces A. Liebsch pp. 1233-1236 [View   PDF (614 kB)  See Also: Erratum]

•	New Stability Limit of Electrons Trapped on the Surface of Liquid Helium Gordon T. Saville, John M. Goodkind, and P. M. Platzman pp. 1237-1240 [View   PDF (595 kB) ]

•	Polarization and Resonance Properties of Magnetic X-Ray Scattering in Holmium Doon Gibbs, D. R. Harshman, E. D. Isaacs, D. B. McWhan, D. Mills, and C. Vettier pp. 1241-1244 [View   PDF (617 kB) ]

•	X-Ray Resonance Exchange Scattering J. P. Hannon, G. T. Trammell, M. Blume, and Doon Gibbs pp. 1245-1248 [View   PDF (642 kB)  See Also: Erratum]

•	Strong Orbital Magnetism and Possible Mixed Valence in 4d Systems K. D. Gross and D. Riegel pp. 1249-1252 [View   PDF (648 kB) ]

•	Spin-Polarized Tunneling Study of s-f Exchange in Superconductors J. E. Tkaczyk and P. M. Tedrow pp. 1253-1256 [View   PDF (648 kB) ]

•	Symmetry and Static Correlation Function of Tilted Hexatic Liquid Crystals Helmut R. Brand and Harald Pleiner pp. 1257 [View   PDF (166 kB) ]

•	Sprunt and Litster Reply S. Sprunt and J. D. Litster pp. 1258 [View   PDF (184 kB) ]

•	Josephson Junctions in Y1Ba2Cu3Ox Dana Browne and Baruch Horovitz pp. 1259 [View   PDF (189 kB) ]

•	Dubson et al. Reply M. A. Dubson, S. T. Herbert, J. J. Calabrese, D. C. Harris, B. R. Patton, and J. C. Garland pp. 1260 [View   PDF (138 kB) ]