NEWSPAPER 97

Regions of supersymmetry parameter space for which detection of the heavy A or H Higgs boson at the Fermilab Tevatron collider is excluded by astrophysical dark matter searches. Shown are current dark matter constraints (green), projected constraints for 2007 (black), as well as previous collider constraints (blue). See article 051801. PHYSICAL REVIEW LETTERS R 7() 541 592 uut20 20ttlpages) total (280 2006 August 4 059902, 050401– (5), 97 PRL Contents Articles published 29 July–4 August 2006

VOLUME 97, NUMBER 5 4 August 2006

General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. Lieb-Robinson Bounds and the Generation of Correlations and Topological Quantum Order ...... 050401 S. Bravyi, M. B. Hastings, and F. Verstraete of Ultracold Atoms by Periodic Lattice Modulations ...... 050402 C. Kollath, A. Iucci, T. Giamarchi, W. Hofstetter, and U. Schollwo¨ck Expansion for a Fermi Gas at Infinite Scattering Length ...... 050403 Yusuke Nishida and Dam Thanh Son Entanglement Entropy of 2D Conformal Quantum Critical Points: Hearing the Shape of a Quantum Drum ...... 050404 Eduardo Fradkin and Joel E. Moore Measuring Multipartite Concurrence with a Single Factorizable Observable ...... 050501 Leandro Aolita and Florian Mintert State Tomography of Capacitively Shunted Phase Qubits with High Fidelity ...... 050502 Matthias Steffen, M. Ansmann, R. McDermott, N. Katz, Radoslaw C. Bialczak, Erik Lucero, Matthew Neeley, E. M. Weig, A. N. Cleland, and John M. Martinis Asymptotic Violation of Bell Inequalities and Distillability ...... 050503 Lluı´s Masanes Limitations of Quantum Simulation Examined by Simulating a Pairing Hamiltonian Using Nuclear Magnetic Resonance ...... 050504 Kenneth R. Brown, Robert J. Clark, and Isaac L. Chuang Trapped Ion Quantum Computation with Transverse Phonon Modes ...... 050505 Shi-Liang Zhu, C. Monroe, and L.-M. Duan Statistical-Temperature Monte Carlo and Molecular Dynamics Algorithms ...... 050601 Jaegil Kim, John E. Straub, and Thomas Keyes Measurement of Stochastic Entropy Production ...... 050602 C. Tietz, S. Schuler, T. Speck, U. Seifert, and J. Wrachtrup Exclusion Processes with Internal States ...... 050603 Tobias Reichenbach, Thomas Franosch, and Erwin Frey

Gravitation and Astrophysics High Energy Neutrino Flashes from Far-Ultraviolet and X-Ray Flares in Gamma-Ray Bursts ...... 051101 Kohta Murase and Shigehiro Nagataki

Elementary Particles and Fields Implications of Direct Dark Matter Constraints for Minimal Supersymmetric Standard Model Higgs Boson Searches at the Tevatron ...... 051801 Marcela Carena, Dan Hooper, and Peter Skands 0 Observation of B Meson Decay to a1 1260 ...... 051802 B. Aubert et al. (BABAR Collaboration)

(Continued on Third Cover) 5

Copyright 2006 by The American Physical Society

0031-9007(20060804)97:5;1-Q Contents (Continued)

Nuclear Physics p Dense-Medium Modifications to Jet-Induced Hadron Pair Distributions in Au Au Collisions at sNN 200 GeV 052301 S. S. Adler et al. (PHENIX Collaboration) and Proton Transverse Emission Ratio Measurements and the Density Dependence of the Asymmetry Term of the Nuclear Equation of State ...... 052701 M. A. Famiano, T. Liu, W. G. Lynch, A. M. Rogers, M. B. Tsang, M. S. Wallace, R. J. Charity, S. Komarov, D. G. Sarantites, and L. G. Sobotka

Atomic, Molecular, and Optical Physics Quantum-Control Spectroscopy with Exact State Selectivity ...... 053001 Yoshiaki Teranishi Quantum Optics with Surface Plasmons ...... 053002 D. E. Chang, A. S. Sørensen, P.R. Hemmer, and M. D. Lukin Experimental Investigation of Core-Valence Double ...... 053003 Y. Hikosaka, T. Aoto, P. Lablanquie, F. Penent, E. Shigemasa, and K. Ito Squeezed-State Purification with Linear Optics and Feedforward ...... 053601 O. Glo¨ckl, U. L. Andersen, R. Filip, W. P. Bowen, and G. Leuchs

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc. Experimental Verification of an Optical Vortex Coronagraph ...... 053901 Jae Hoon Lee, Gregory Foo, Eric G. Johnson, and Grover A. Swartzlander, Jr. Making Tunnel Barriers (Including Metals) Transparent ...... 053902 I. R. Hooper, T. W. Preist, and J. R. Sambles Recovering the Acoustic Green’s Function from Ambient Noise Cross Correlation in an Inhomogeneous Moving Medium ...... 054301 Oleg A. Godin Pattern Formation in Taylor-Couette Flow of Dilute Polymer Solutions: Dynamical Simulations and Mechanism . . . . 054501 D. G. Thomas, R. Sureshkumar, and B. Khomami Drop Deformation in Microconfined Shear Flow ...... 054502 Vincenzo Sibillo, Gilberto Pasquariello, Marino Simeone, Vittorio Cristini, and Stefano Guido

Plasma and Beam Physics Absolute Measurement of Electron-Cloud Density in a Positively Charged Particle Beam ...... 054801 Michel Kireeff Covo, Arthur W. Molvik, Alex Friedman, Jean-Luc Vay, Peter A. Seidl, Grant Logan, David Baca, and Jasmina L. Vujic Observation and Control of Transverse Energy-Transport Barrier due to the Formation of an Energetic-Electron Layer with Sheared E B Flow ...... 055001 T. Cho, J. Kohagura, T. Numakura, M. Hirata, H. Higaki, H. Hojo, M. Ichimura, K. Ishii, K. Md. Islam, A. Itakura, I. Katanuma, R. Minami, Y. Nakashima, T. Saito, Y. Tatematsu, O. Watanabe, M. Yoshikawa, A. Kojima, Y. Miyake, Y. Miyata, K. Shimizu, Y. Tomii, M. Yoshida, K. Sakamoto, T. Imai, V.P. Pastukhov, and S. Miyoshi (GAMMA 10 Group) Observation of Stable Superdense Core Plasmas in the Large Helical Device ...... 055002 N. Ohyabu, T. Morisaki, S. Masuzaki, R. Sakamoto, M. Kobayashi, J. Miyazawa, M. Shoji, A. Komori, and O. Motojima (LHD Experimental Group) Stability of Highly Shifted Equilibria in a Large-Aspect-Ratio Tokamak ...... 055003 P.-A. Gourdain, S. C. Cowley, J.-N. Leboeuf, and R. Y. Neches

Condensed Matter: Structure, etc. Inhomogeneous Elastic Response of Silica Glass ...... 055501 F. Le´onforte, A. Tanguy, J. P. Wittmer, and J.-L. Barrat Imaging Ripples on Phononic Crystals Reveals Acoustic Band Structure and Bloch Harmonics ...... 055502 Dieter M. Profunser, Oliver B. Wright, and O. Matsuda

(Continued on Preceding Page) Contents (Continued)

Control of Defect Concentrations within a Semiconductor through Adsorption ...... 055503 Edmund G. Seebauer, Kapil Dev, Michael Y. Jung, Ramakrishnan Vaidyanathan, Charlotte T. Kwok, Joel W. Ager, Eugene E. Haller, and Richard D. Braatz Universal Features of Terahertz Absorption in Disordered Materials ...... 055504 S. N. Taraskin, S. I. Simdyankin, S. R. Elliott, J. R. Neilson, and T. Lo Efficient Calculation of Electron Diffraction for the Structural Determination of Nanomaterials ...... 055505 G. M. Gavaza, Z. X. Yu, L. Tsang, C. H. Chan, S. Y. Tong, and M. A. Van Hove Interplay between Diffusive and Displacive Phase Transformations: Time-Temperature-Transformation Diagrams and Microstructures ...... 055701 Mathieu Bouville and Rajeev Ahluwalia Fractional Stokes-Einstein and Debye-Stokes-Einstein Relations in a Network-Forming Liquid ...... 055901 Stephen R. Becker, Peter H. Poole, and Francis W. Starr Exactly Quantized Dynamics of Classical Incommensurate Sliders ...... 056101 Andrea Vanossi, Nicola Manini, Giorgio Divitini, Giuseppe E. Santoro, and Erio Tosatti Why N2 Molecules with Thermal Energy Abundantly Dissociate on W(100) and Not on W(110) ...... 056102 M. Alducin, R. Dı´ez Muin˜o, H. F. Busnengo, and A. Salin Carbon Monoxide Dissociation on Rh Nanopyramids ...... 056103 F. Buatier de Mongeot, A. Toma, A. Molle, S. Lizzit, L. Petaccia, and A. Baraldi Combinatorial Search for Optimal -Storage Nanomaterials Based on Polymers ...... 056104 Hoonkyung Lee, Woon Ih Choi, and Jisoon Ihm

Condensed Matter: Electronic Properties, etc. Quasiparticlelike Peaks, Kinks, and Electron-Phonon Coupling at the ; 0 Regions in the CMR Oxide La22xSr12xMn2O7 ...... 056401 Z. Sun, Y.-D. Chuang, A. V. Fedorov, J. F. Douglas, D. Reznik, F. Weber, N. Aliouane, D. N. Argyriou, H. Zheng, J. F. Mitchell, T. Kimura, Y. Tokura, A. Revcolevschi, and D. S. Dessau Synergistic Polaron Formation in the Hubbard-Holstein Model at Small Doping ...... 056402 Alexandru Macridin, Brian Moritz, M. Jarrell, and Thomas Maier Resonant X-Ray Diffraction Studies on the Charge Ordering in Magnetite ...... 056403 E. Nazarenko, J. E. Lorenzo, Y. Joly, J. L. Hodeau, D. Mannix, and C. Marin Reversible Tuning of the Heavy-Fermion Ground State in CeCoIn5 ...... 056404 L. D. Pham, Tuson Park, S. Maquilon, J. D. Thompson, and Z. Fisk Quantum Thermal Conductance of Electrons in a One-Dimensional Wire ...... 056601 O. Chiatti, J. T. Nicholls, Y.Y. Proskuryakov, N. Lumpkin, I. Farrer, and D. A. Ritchie Electron Dynamics in a Self-Assembled Semiconductor Quantum Dot: The Limit of Low Magnetic Fields . . . . 056602 I. A. Akimov, D. H. Feng, and F. Henneberger Effect of Exchange Interaction on Spin Dephasing in a Double Quantum Dot ...... 056801 E. A. Laird, J. R. Petta, A. C. Johnson, C. M. Marcus, A. Yacoby, M. P. Hanson, and A. C. Gossard Lattice Relaxation in Oxide Heterostructures: LaTiO3=SrTiO3 Superlattices ...... 056802 Satoshi Okamoto, Andrew J. Millis, and Nicola A. Spaldin Dephasing in (Ga,Mn)As Nanowires and Rings ...... 056803 K. Wagner, D. Neumaier, M. Reinwald, W. Wegscheider, and D. Weiss Abelian and Non-Abelian Hall Liquids and Charge-Density Wave: Quantum Number Fractionalization in One and Two Dimensions ...... 056804 Alexander Seidel and Dung-Hai Lee Dynamics below the Depinning Threshold in Disordered Elastic Systems ...... 057001 Alejandro B. Kolton, Alberto Rosso, Thierry Giamarchi, and Werner Krauth Fermi Surface Topology and the Superconducting Gap Function in UPd2Al3: A Neutron Spin-Echo Study ...... 057002 E. Blackburn, A. Hiess, N. Bernhoeft, M. C. Rheinsta¨dter, W. Ha¨ußler, and G. H. Lander Tunneling Spectra of Layered Strongly Correlated d-Wave Superconductors ...... 057003 Tiago C. Ribeiro and Xiao-Gang Wen Reentrant Superconductivity in Nb=Cu1xNix Bilayers ...... 057004 V. Zdravkov, A. Sidorenko, G. Obermeier, S. Gsell, M. Schreck, C. Mu¨ller, S. Horn, R. Tidecks, and L. R. Tagirov

(Continued on Preceding Page) Contents (Continued)

Origin of Nonlinear Transport across the Magnetically Induced Superconductor-Metal-Insulator Transition in Two Dimensions ...... 057005 Y. Seo, Y. Qin, C. L. Vicente, K. S. Choi, and Jongsoo Yoon End of Aging in a Complex System ...... 057201 G. G. Kenning, G. F. Rodriguez, and R. Orbach Dynamics of Field-Induced Ordering in Magnetic Colloids Studied by New Time-Resolved Small-Angle Neutron- Scattering Techniques ...... 057202 A. Wiedenmann, U. Keiderling, K. Habicht, M. Russina, and R. Ga¨hler Nonlinear Domain-Wall Velocity Enhancement by Spin-Polarized Electric Current ...... 057203 G. S. Beach, C. Knutson, C. Nistor, M. Tsoi, and J. L. Erskine Ultrafast Dynamics of Coherences in a Quantum Hall System ...... 057401 K. M. Dani, J. Tignon, M. Breit, D. S. Chemla, E. G. Kavousanaki, and I. E. Perakis Optical Bistability in Nonlinear Surface-Plasmon Polaritonic Crystals ...... 057402 G. A. Wurtz, R. Pollard, and A. V. Zayats Photoemission from Buried Interfaces in SrTiO3=LaTiO3 Superlattices ...... 057601 M. Takizawa, H. Wadati, K. Tanaka, M. Hashimoto, T. Yoshida, A. Fujimori, A. Chikamatsu, H. Kumigashira, M. Oshima, K. Shibuya, T. Mihara, T. Ohnishi, M. Lippmaa, M. Kawasaki, H. Koinuma, S. Okamoto, and A. J. Millis

Soft Matter, Biological, and Interdisciplinary Physics Glass Transition of Miscible Binary Polymer-Polymer Thin Films ...... 057801 Brian M. Besancon, Christopher L. Soles, and Peter F. Green Dynamics of a Hard Sphere Granular Impurity ...... 058001 Andre´s Santos and James W. Dufty Direct Measurement of Torque in an Optical Trap and Its Application to Double-Strand DNA ...... 058301 La´szlo´ Oroszi, Pe´ter Galajda, Huba Kirei, Sa´ndor Bottka, and Pa´l Ormos Force-Induced Desorption and Unzipping of Semiflexible Polymers ...... 058302 J. Kierfeld

Comments Comment on ‘‘Inseparability Criteria for Continuous Bipartite Quantum States’’ ...... 058901 Adam Miranowicz and Marco Piani Shchukin and Vogel Reply ...... 058902 E. Shchukin and W. Vogel Comment on ‘‘Can One Predict DNA Transcription Start Sites by Studying Bubbles?’’ ...... 059801 Craig J. Benham and Rajiv R. Singh van Erp et al. Reply ...... 059802 Titus S. van Erp, Santiago Cuesta-Lopez, Johannes-Geert Hagmann, and Michel Peyrard

Errata Publisher’s Note: Electron-Phonon Interaction and Antiferromagnetic Correlations [Phys. Rev. Lett. 97, 046404 (2006)] ...... 059901 G. Sangiovanni, O. Gunnarsson, E. Koch, C. Castellani, and M. Capone Erratum: Structure Formation and Instability in a Tube of Sand [Phys. Rev. Lett. 87, 134302 (2001)] ...... 059902 Dragos-Victor Anghel, Martin Strauss, Eirik G. Flekkøy, Sean McNamara, and Knut Jørgen Ma˚løy

Physical Review Brief explanations of selected papers from this and other APS journals appear regularly at the Phys. Rev. Focus web site (http://focus.aps.org). Readers can also sign up for weekly e-mail summaries of Focus stories.