- Direct Observation of Two Protons in the Decay of (54)Zn
[作者:Ascher, P; Audirac, L; Adimi, N; Blank, B; Borcea, C; Brown, BA; Companis, I; Delalee, F; Demonchy, CE; Santos, FD; Giovinazzo, J; Grevy, S; Grigorenko, LV; Kurtukian-Nieto, T; Leblanc, S; Pedroza, JL; Perrot, L; Pibernat, J; Serani, L; Srivastava, PC; Thomas, JC,期刊:PHYSICAL REVIEW LETTERS, 页码:102502-102502 , 文章类型: Article,,卷期:2011年107-10]
- The two protons emitted in the decay of (54)Zn have been individually observed for the first time in a time projection chamber. The total decay energy and the half-life measured in this work agree with the results obtain...
- Jamming, Yielding, and Rheology of Weakly Vibrated Granular Media
[作者:Dijksman, JA; Wortel, GH; van Dellen, LTH; Dauchot, O; van Hecke, M,期刊:PHYSICAL REVIEW LETTERS, 页码:108303-108303 , 文章类型: Article,,卷期:2011年107-10]
- We establish that the rheological curve of dry granular media is nonmonotonic, both in the presence and absence of external mechanical agitations. In the presence of weak vibrations, the nonmonotonic flow curves govern a...
- Resonance Assisted Synchronization of Coupled Oscillators: Frequency Locking without Phase Locking
[作者:Thevenin, J; Romanelli, M; Vallet, M; Brunel, M; Erneux, T,期刊:PHYSICAL REVIEW LETTERS, 页码:104101-104101 , 文章类型: Article,,卷期:2011年107-10]
- Frequency locking without phase locking of two coupled nonlinear oscillators is experimentally demonstrated. This synchronization regime is found for two coupled laser modes, beyond the phase-locking range fixed by Adler...
- Selective and Efficient Quantum Process Tomography without Ancilla
[作者:Schmiegelow, CT; Bendersky, A; Larotonda, MA; Paz, JP,期刊:PHYSICAL REVIEW LETTERS, 页码:100502-100502 , 文章类型: Article,,卷期:2011年107-10]
- Several methods, known as quantum process tomography, are available to characterize the evolution of quantum systems, a task of crucial importance. However, their complexity dramatically increases with the size of the sy...
- Direct Measurement of the Free Cyclotron Frequency of a Single Particle in a Penning Trap
[作者:Ulmer, S; Blaum, K; Kracke, H; Mooser, A; Quint, W; Rodegheri, CC; Walz, J,期刊:PHYSICAL REVIEW LETTERS, 页码:103002-103002 , 文章类型: Article,,卷期:2011年107-10]
- A measurement scheme for the direct determination of the free cyclotron frequency v(c) of a single particle stored in a Penning trap is described. The method is based on the dressed states of mode coupling. In this novel...
- Noncooperatively Optimized Tolerance: Decentralized Strategic Optimization in Complex Systems
[作者:Vorobeychik, Y; Mayo, JR; Armstrong, RC; Ruthruff, JR,期刊:PHYSICAL REVIEW LETTERS, 页码:108702-108702 , 文章类型: Article,,卷期:2011年107-10]
- We introduce noncooperatively optimized tolerance (NOT), a game theoretic generalization of highly optimized tolerance (HOT), which we illustrate in the forest fire framework. As the number of players increases, NOT reta...
- Extended Phonon Collapse and the Origin of the Charge-Density Wave in 2H-NbSe(2)
[作者:Weber, F; Rosenkranz, S; Castellan, JP; Osborn, R; Hott, R; Heid, R; Bohnen, KP; Egami, T; Said, AH; Reznik, D,期刊:PHYSICAL REVIEW LETTERS, 页码:107403-107403 , 文章类型: Article,,卷期:2011年107-10]
- We report inelastic x-ray scattering measurements of the temperature dependence of phonon dispersion in the prototypical charge-density-wave (CDW) compound 2H-NbSe(2). Surprisingly, acoustic phonons soften to zero freque...
- Fermi Surface and Superconductivity in Low-Density High-Mobility delta-Doped SrTiO(3)
[作者:Kim, M; Bell, C; Kozuka, Y; Kurita, M; Hikita, Y; Hwang, HY,期刊:PHYSICAL REVIEW LETTERS, 页码:106801-106801 , 文章类型: Article,,卷期:2011年107-10]
- The electronic structure of low-density n-type SrTiO(3) delta-doped heterostructures is investigated by angular dependent Shubnikov-de Haas oscillations. In addition to a controllable crossover from a three-to two-dimens...
- p-Wave Cold Collisions in an Optical Lattice Clock
[作者:Lemke, ND; von Stecher, J; Sherman, JA; Rey, AM; Oates, CW; Ludlow, AD,期刊:PHYSICAL REVIEW LETTERS, 页码:103902-103902 , 文章类型: Article,,卷期:2011年107-10]
- We study ultracold collisions in fermionic ytterbium by precisely measuring the energy shifts they impart on the atoms' internal clock states. Exploiting Fermi statistics, we uncover p-wave collisions, in both weakly and...
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