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Physics 2, 96 (2009) – Published November 16, 2009 Statistical Mechanics Soft Matter Directed percolation, a class of nonequilibrium phase transitions as prominent as the Ising model in equilibrium statistical mechanics, is realized experimentally for the first time, after more than fifty years of research. |
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Physics 2, 97 (2009) – Published November 16, 2009 Statistical Mechanics Interdisciplinary Physics The popularity of various chess openings follows a power law distribution, but the exponent depends on the depth of the opening sequence. |
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Physics 2, 93 (2009) – Published November 9, 2009 A theory of novel phase formation near quantum critical points suggests that large fluctuations lead to magnetic analogs of inhomogeneous superconductivity. |
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Physics 2, 94 (2009) – Published November 9, 2009 Two separate teams have achieved the long sought after Bose-Einstein condensation of strontium. |
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Physics 2, 91 (2009) – Published November 2, 2009 Optics Particles & Fields Metamaterials Čerenkov radiation with the emission cone reversed has been observed in a metamaterial with negative refractive index. |
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Physics 2, 92 (2009) – Published November 2, 2009 Defects—in the form of vortices in superconductors or “strings” in the fabric of the universe—can reveal the state of a system at the time it was cooled. |
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Physics 2, 89 (2009) – Published October 26, 2009 Fluid Dynamics Biological Physics Simulations provide insight into how viscous flow transforms the shapes of red blood cells, which may influence their physiological properties. |
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Physics 2, 90 (2009) – Published October 26, 2009 Statistical Mechanics Strongly Correlated Materials A new renormalization group approach that maps lattice problems to tensor networks may hold the key to solving seemingly intractable models of strongly correlated systems in any dimension. |
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Physics 2, 86 (2009) – Published October 19, 2009 How freak or rogue waves form in the ocean is not well understood, but new investigations suggest a mechanism for these waves that may also allow formation of high-intensity pulses in optical fibers. |
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Physics 2, 87 (2009) – Published October 19, 2009 Interactions among noncondensed bosonic atoms in a trap can cause one species of atoms accelerated by a magnetic field to drag along another species of atoms that would normally not interact with the field. |
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Physics 2, 84 (2009) – Published October 12, 2009 Photoelectron spectroscopy reveals how carbon atoms aggregate to form domelike graphene structures on iridium surfaces. |
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Physics 2, 85 (2009) – Published October 12, 2009 A new approach to reduce spherical and chromatic aberration in electron microscopy allows for low-energy imaging of single-layer boron nitride, a novel 2D nanostructure that is analogous to graphene. |
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Physics 2, 82 (2009) – Published October 5, 2009 Quantum Information Semiconductor Physics Mesoscopics Nanophysics A theoretical analysis of recent experiments suggests that a key feature of a topological quantum computer—the unusual statistics of quasiparticles in the quantum Hall effect—may finally have been observed. |
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Physics 2, 83 (2009) – Published October 5, 2009 An entangled state of six photons could potentially carry quantum information over large distances and between different reference frames. |
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Physics 2, 80 (2009) – Published September 28, 2009 New methods for lowering the entropy of ultracold gases may allow observation of more subtle quantum materials. |
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Physics 2, 81 (2009) – Published September 28, 2009 The existence, through statistical fluctuation, of arbitrarily large regions with a certain order in an otherwise disordered system, allow one to set bounds on various important thermodynamic properties. |
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Physics 2, 78 (2009) – Published September 21, 2009 An angle-resolved photoemission spectroscopy study of electron transport along quasi-one-dimensional Mo-O chains of Li0.9Mo6O17 reveals puzzling behavior that does not fit within the available one-dimensional theory frameworks and likely points to undiscovered physics. |
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Physics 2, 79 (2009) – Published September 21, 2009 Particles & Fields Gravitation A mathematical formulism makes a step forward in proving the AdS/CFT correspondence that connects quantum mechanics with gravity. |
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Physics 2, 75 (2009) – Published September 14, 2009 Magnetism Nanophysics Spintronics A microscopic study of magnetic nanoislands on a surface challenges the widely held view that all atoms in a relaxing nanoparticle flip their spins in unison. |
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Physics 2, 76 (2009) – Published September 14, 2009 An electric field can be used to pull on molecular hydrogen’s highly excited outer electron to slow down and trap the molecule. |
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Physics 2, 73 (2009) – Published September 8, 2009 Magnetic switching is typically a continuous process, where a field pulse rotates a magnet from up to down, but it is now possible to do this faster — and with all-optical methods — by first quenching the magnetization to zero and then repolarizing it in the opposite direction. |
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Physics 2, 72 (2009) – Published August 31, 2009 Atomic & Molecular Physics Optics Calculations show that with new short pulse x-ray light sources, it should be possible to use photoelectron emission to make movies of changes in molecular structure. |
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Physics 2, 71 (2009) – Published August 24, 2009 A recent theory of gravity has stimulated intense debate and many explorations of its implications. |
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Physics 2, 70 (2009) – Published August 17, 2009 Quantum field theoretic extensions of Einstein’s theory of gravity tend to suffer from incurable infinities, but a theory called N=8 supergravity may actually avoid them—against expectations held for almost 30 years. |
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Physics 2, 67 (2009) – Published August 10, 2009 Atomic & Molecular Physics Statistical Mechanics Soft Matter Experiments on melting of small water clusters open the door to the study of the size-dependent phase diagram of water. |
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