Manganese-hydrogen complexes in GaMnN
C. Bihler, U. Gerstmann, M. Hoeb, T. Graf, M. Gjukic et al.
The effects of hydrogenation on Mn-doped GaN are studied with electron-paramagnetic resonance (EPR), local vibrational mode (LVM) spectroscopy, and density-functional theory (DFT) calculations. With EPR, we find two distinct Mn complexes which, in particular, differ in the size and orientation of th ... [Phys. Rev. B 80, 205205 (2009)] published Fri Nov 20, 2009.
Interaction effects in the optical conductivity of bilayer graphene: Drude-interband coupling and screening
Wang-Kong Tse and A. H. MacDonald
We present a theory of the influence of band renormalization and excitonic electron-electron interaction effects on the optical conductivity sigma(omega) of doped bilayer graphene. Using the Keldysh formalism, we derive a kinetic equation from which we extract numerical and approximate analytic resu ... [Phys. Rev. B 80, 195418 (2009)] published Fri Nov 20, 2009.
Quantum phase transition of the one-dimensional transverse-field compass model
Ke-Wei Sun and Qing-Hu Chen
The quantum phase transition (QPT) of the one-dimensional (1D) quantum compass model in a transverse magnetic field is studied in this paper. An exact solution is obtained by using an extended Jordan and Wigner transformation to the pseudospin operators. The fidelity susceptibility, the concurrence, ... [Phys. Rev. B 80, 174417 (2009)] published Fri Nov 20, 2009.
Transition from spin-density-wave to layered antiferromagnetic state induced by hydrogen as a test for the origin of spin-density waves in chromium
V. M. Uzdin, H. Zabel, A. Remhof, and B. Hjorvarsson
Neutron scattering experiments of Cr/V(001) superlattices are discussed, which show that the incommensurate spin-density-wave (SDW) in thick Cr layers becomes suppressed when the V spacer layers are loaded with hydrogen. The hydrogen loading triggers a transition from the incommensurate SDW state to ... [Phys. Rev. B 80, 174418 (2009)] published Fri Nov 20, 2009.
Finding Stationary Subspaces in Multivariate Time Series
Paul von Bunau, Frank C. Meinecke, Franz C. Kiraly, and Klaus-Robert Muller
Identifying temporally invariant components in complex multivariate time series is key to understanding the underlying dynamical system and predict its future behavior. In this Letter, we propose a novel technique, stationary subspace analysis (SSA), that decomposes a multivariate time series into i ... [Phys. Rev. Lett. 103, 214101 (2009)] published Fri Nov 20, 2009.
Numerical simulation of liquid sloshing in a partially filled container with inclusion of compressibility effects
Y. G. Chen and W. G. Price
A numerical scheme of study is developed to model compressible two-fluid flows simulating liquid sloshing in a partially filled tank. For a two-fluid system separated by an interface as in the case of sloshing, not only a Mach-uniform scheme is required but also an effective way to eliminate unphysi ... [Phys. Fluids 21, 112105 (2009)] published Thu Nov 19, 2009.
Dynamical Origin of the Effective Storage Capacity in the Brain's Working Memory
Christian Bick and Mikhail I. Rabinovich
The capacity of working memory (WM), a short-term buffer for information in the brain, is limited. We suggest a model for sequential WM that is based upon winnerless competition amongst representations of available informational items. Analytical results for the underlying mathematical model relate ... [Phys. Rev. Lett. 103, 218101 (2009)] published Thu Nov 19, 2009.
Role of electronic excitations in the energy loss of H projectiles in high-kappa materials
S. M. Shubeita, R. C. Fadanelli, J. F. Dias, P. L. Grande, C. D. Denton et al.
In the present work we report on the energy loss ratio R of fast H clusters in thin films (3050 A) of LaScO and HfO. The medium energy ion scattering technique was employed covering a broad energy range (40200 keV/amu). The energy loss ratio data showed no clear evidence of collective excitations i ... [Phys. Rev. B 80, 205316 (2009)] published Wed Nov 18, 2009.
Numerical Modeling of Heat Transfer and Pressure Losses for an Uncooled Gas Turbine Blade Tip: Effect of Tip Clearance and Tip Geometry
Lamyaa A. El-Gabry
A computational study has been performed to predict the heat transfer distribution on the blade tip surface for a representative gas turbine first stage blade. Computational fluid dynamics (CFD) predictions of blade tip heat transfer are compared with test measurements taken in a linear cascade, whe ... [J. Thermal Sci. Eng. Appl. 1, 022005 (2009)] published Wed Nov 18, 2009.
Phase diagram and critical behavior of the square-lattice Ising model with competing nearest-neighbor and next-nearest-neighbor interactions
Junqi Yin and D. P. Landau
Using the parallel tempering algorithm and graphics processing unit accelerated techniques, we have performed large-scale Monte Carlo simulations of the Ising model on a square lattice with antiferromagnetic (repulsive) nearest-neighbor and next-nearest-neighbor interactions of the same strength and ... [Phys. Rev. E 80, 051117 (2009)] published Tue Nov 17, 2009.
Erratum: Geometric prequantization of the moduli space of the vortex equations on a Riemann surface [J. Math. Phys. 47, 103501 (2006)]
Rukmini Dey
In this erratum to a work done previously, we give an alternative description for the prequantization with respect to the forms Omega, where we do not need the 1-form theta which may not be globally defined. Next by modifying the Quillen metric of the usual determinant bundle suitably, we quantize t ... [J. Math. Phys. 50, 119901 (2009)] published Tue Nov 17, 2009.
Detection of protein secondary structures via the discrete wavelet transform
Jesus Pando, Luke Sands, and Sean E. Shaheen
We subject the primary sequence of proteins gathered from the Structural Classification of Proteins (SCOP) database to a discrete wavelet transform (DWT) analysis to search for predictors of secondary structures. We use proteins with both alpha helices and beta sheets (the A/B, A+B databases from SC ... [Phys. Rev. E 80, 051909 (2009)] published Mon Nov 16, 2009.
Angular dependence of magnetic properties in Ni nanowire arrays
R. Lavin, J. C. Denardin, J. Escrig, D. Altbir, A. Cortes et al.
The angular dependence of the remanence and coercivity of Ni nanowire arrays produced inside the pores of anodic alumina membranes has been studied. By comparing our analytical calculations with our measurements, we conclude that the magnetization reversal in this array is driven by means of the nuc ... [J. Appl. Phys. 106, 103903 (2009)] published Mon Nov 16, 2009.
Nonlinear transport theory for negative-differential resistance states of two-dimensional electron systems in strong magnetic fields
A. Kunold and M. Torres
We present a model to describe the nonlinear response to a direct dc current applied to a two-dimensional electron system in a strong magnetic field. The model is based on the solution of the von Neumann equation incorporating the exact dynamics of two-dimensional damped electrons in the presence of ... [Phys. Rev. B 80, 205314 (2009)] published Fri Nov 13, 2009.
Statistical mechanical theory for nonequilibrium systems. X. Nonequilibrium phase transitions
Phil Attard
A general theory for the stability and coexistence of nonequilibrium phases is formulated. An integral formulation of the second entropy is given, the functional maximization of which yields nonlinear hydrodynamics. RayleighBenard convection is analyzed, and analytic approximations are obtained for ... [J. Chem. Phys. 131, 184509 (2009)] published Fri Nov 13, 2009.
Thermodynamic consistency of energy and virial routes: An exact proof within the linearized DebyeHuckel theory
Andres Santos, Riccardo Fantoni, and Achille Giacometti
The linearized DebyeHuckel theory for liquid state is shown to provide thermodynamically consistent virial and energy routes for any potential and for any dimensionality. The importance of this result for bounded potentials is discussed. ... [J. Chem. Phys. 131, 181105 (2009)] published Fri Nov 13, 2009.
Generalized Misner-Sharp energy in f(R) gravity
Rong-Gen Cai, Li-Ming Cao, Ya-Peng Hu, and Nobuyoshi Ohta
We study generalized Misner-Sharp energy in f(R) gravity in a spherically symmetric space-time. We find that unlike the cases of Einstein gravity and Gauss-Bonnet gravity, the existence of the generalized Misner-Sharp energy depends on a constraint condition in the f(R) gravity. When the constraint ... [Phys. Rev. D 80, 104016 (2009)] published Fri Nov 13, 2009.
Initialization and self-organized optimization of recurrent neural network connectivity
Joschka Boedecker, Oliver Obst, N. Michael Mayer, and Minoru Asada
Reservoir computing (RC) is a recent paradigm in the field of recurrent neural networks. Networks in RC have a sparsely and randomly connected fixed hidden layer, and only output connections are trained. RC networks have recently received increased attention as a mathematical model for generic neura ... [HFSP J. 3, 340 (2009)] published Thu Nov 12, 2009.
Effective Interaction Potentials and Physical Properties of Complex Plasmas
T. S. Ramazanov, K. N. Dzhumagulova, M. T. Gabdullin, and Y. A. Omarbakiyeva
Microscopic, thermodynamic and transport properties of complex plasmas are investigated on the basis of effective potentials of interparticle interaction. These potentials take into account correlation effects and quantum-mechanical diffraction. Plasma composition, thermodynamic functions of hydroge ... [AIP Conf. Proc. 1188, 95 (2009)] published Thu Nov 12, 2009.
Erratum: Axial nucleon and nucleon to Delta form factors and the Goldberger-Treiman relations from lattice QCD [Phys. Rev. D 76, 094511 (2007)]
C. Alexandrou, G. Koutsou, Th. Leontiou, J. W. Negele, and A. Tsapalis
Abstract not available. [Phys. Rev. D 80, 099901 (2009)] published Thu Nov 12, 2009.
Erratum: Real-time renormalization group in frequency space: A two-loop analysis of the nonequilibrium anisotropic Kondo model at finite magnetic field [Phys. Rev. B 80, 045117 (2009)]
Herbert Schoeller and Frank Reininghaus
Abstract not available. [Phys. Rev. B 80, 209901 (2009)] published Wed Nov 11, 2009.
Reply to "Comment on 'Piezonuclear decay of thorium' [Phys. Lett. A 373 (2009) 1956]" by L. Kowalski. (arXiv:0911.3812v1 [physics.gen-ph])
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Space-time structure and fields of bound charges. (arXiv:0911.3851v1 [physics.gen-ph])
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Holography, charge and baryon asymmetry. (arXiv:0911.3660v1 [physics.gen-ph])
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Origin of Life. (arXiv:0907.3552v10 [physics.gen-ph] UPDATED)
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Quantum Theories and Relativistic Approach. (arXiv:0901.3962v2 [physics.gen-ph] UPDATED)
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