Fano Blockade by a Bose-Einstein Condensate in an Optical Lattice
Rodrigo A. Vicencio, Joachim Brand, and Sergej Flach
We study the transport of atoms across a localized Bose-Einstein condensate in a one-dimensional optical lattice. For atoms scattering off the condensate, we predict total reflection as well as full transmission for certain parameter values on the basis of an exactly solvable model. The findings of ... [Phys. Rev. Lett. 98, 184102 (2007)] published Thu May 3, 2007.
Angle multiplexed storage with object beam alone
Hon-Fai Yau and Jung-Ping Liu
Making use of the interference of incident light waves and the accompanying fanning waves in a photorefractive LiNbO[sub 3] crystal, the authors have recorded binary images as well as gray-tone images in a crystal with only an object beam. Angle multiplexing has also been demonstrated with this one ... [Appl. Phys. Lett. 90, 181916 (2007)] published Wed May 2, 2007.
Relativistic dynamical bistability and adiabatic excitation of strong plasma waves
Oleg Polomarov and Gennady Shvets
Adiabatic evolution of the nonlinear resonantly driven dynamical system generic to a variety of plasma physics problems, including generation of large-amplitude plasma waves in a plasma beat-wave accelerator, is studied. The properties of the resonant Hamiltonian and the dynamics of its phase space ... [Phys. Plasmas 14, 055908 (2007)] published Wed May 2, 2007.
Generalized synchronization in fractional order systems
Weihua Deng
The generalized synchronization of fractional order systems is investigated, including the synchronization between two different fractional order systems with the same order, the synchronization between two different fractional order systems with no orders the same, and the synchronization between a ... [Phys. Rev. E 75, 056201 (2007)] published Wed May 2, 2007.
Structural, magnetic, and ferroelectric properties of multiferroic BiFeO[sub 3] film fabricated by chemical solution deposition
Hiroshi Naganuma and Soichiro Okamura
Polycrystalline BiFeO[sub 3] film has been fabricated by a chemical solution deposition on Pt/Ti/SiO[sub 2]/Si(100) substrates. A ferroelectric hysteresis loop showed a high remanent polarization of 47 [mu]C/cm[sup 2] at room temperature. Leakage current density was on the order of 10[sup 1] A/cm[ ... [J. Appl. Phys. 101, 09M103 (2007)] published Wed May 2, 2007.
Quantum SU(3) Skyrme model with noncanonical embedded SO(3) soliton
D. Jurčiukonis and E. Norvaišas
The new ansatz which is the SO(3) group soliton was defined for the SU(3) Skyrme model. The model is considered in noncanonical bases SU(3)[superset or implies]SO(3) for the state vectors. A complete canonical quantization of the model has been investigated in the collective coordinate formalism for ... [J. Math. Phys. 48, 052101 (2007)] published Wed May 2, 2007.
Dynamics of dual-power-law optical solitons under randomness
Anjan Biswas, Swapan Konar, and Essaid Zerrad
The propagation of solitons through an optical fiber with dual-power-law nonlinearity, in the presence of a stochastic perturbation term, is studied. The Langevin equations are derived. It is thus proved that solitons travel down an optical fiber with a fixed mean free velocity. ... [Opt. Eng. 46, 055005 (2007)] published Wed May 2, 2007.
Why Do Active and Stabilized Dunes Coexist under the Same Climatic Conditions?
Hezi Yizhaq, Yosef Ashkenazy, and Haim Tsoar
Sand dunes can be active (mobile) or stable, mainly as a function of vegetation cover and wind power. However, there exists as yet unexplained evidence for the coexistence of bare mobile dunes and vegetated stabilized dunes under the same climatic conditions. We propose a model for dune vegetation c ... [Phys. Rev. Lett. 98, 188001 (2007)] published Wed May 2, 2007.
Zonal-flow-driven nonlinear energy transfer in experiment and simulation
C. Holland, G. R. Tynan, R. J. Fonck, G. R. McKee, J. Candy et al.
Using a newly developed algorithm, the nonlinear transfer of internal fluctuation energy |n|[sup 2] due to convection of drift-wave turbulence by a geodesic acoustic mode (GAM, a finite-frequency zonal flow) has now been measured directly in a high-temperature plasma. By combining spatially resolved ... [Phys. Plasmas 14, 056112 (2007)] published Tue May 1, 2007.
Nonlinear growth of marginally unstable tearing modes
R. Coelho
In this work, the nonlinear growth of the classical tearing mode is revisited, using reduced magnetohydrodynamic numerical simulations in cylindrical geometry, emphasizing the limiting scenario of a marginally unstable mode, i.e., 0~Delta[sup [prime]]a<4, where a is the minor radius and Delta[sup [p ... [Phys. Plasmas 14, 052302 (2007)] published Tue May 1, 2007.
Thermal effects in plasma-based accelerators
E. Esarey, C. B. Schroeder, E. Cormier-Michel, B. A. Shadwick, C. G. R. Geddes et al.
Finite plasma temperature can modify the structure of the wake field, reduce the wave-breaking field, and lead to self-trapped electrons, which can degrade the electron bunch quality in a plasma-based accelerator. A relativistic warm fluid theory is used to describe the plasma temperature evolution ... [Phys. Plasmas 14, 056707 (2007)] published Tue May 1, 2007.
Theory and particle simulation of nonlinear double layers in a magnetized plasma
Seung-Shik Kim, Tae-Han Kim, and Ho-Yeun Kim
Theoretical investigation and particle simulation of obliquely propagating nonlinear double layers (NDLs) of nonmonotonic type are performed in a magnetized plasma, which consists of a positively charged ion fluid and trapped, as well as free electrons. The modified Zakharov-Kuznetsov equation is de ... [Phys. Plasmas 14, 052301 (2007)] published Tue May 1, 2007.
A Partial Solution to Last Issue's Homework Assignment: Beetles, Cannibalism, and Chaos--Analyzing a Dynamical System Model
Dianne P. O'Leary
... [Comput. Sci. Eng. 9, 80 (2007)] published Tue May 1, 2007.
Direct writing three-dimensional Ba[sub 2]TiSi[sub 2]O[sub 8] crystalline pattern in glass with ultrashort pulse laser
Ye Dai, Bin Zhu, Jianrong Qiu, Hongliang Ma, Bo Lu et al.
The nonlinear optical crystal Ba[sub 2]TiSi[sub 2]O[sub 8] is induced three-dimensionally inside a glass by a femtosecond pulse laser with 800 nm, 250 kHz, and 150 fs. Micro-Raman and photoluminescence spectra confirm that crystals can grow in the focal point of the laser beam. Continuous crystal ... [Appl. Phys. Lett. 90, 181109 (2007)] published Tue May 1, 2007.
Sellmeier equations for green, yellow, and orange colored HgGa[sub 2]S[sub 4] crystals
Tie-Jun Wang, Zhi-Hui Kang, Hong-Zhi Zhang, Zhi-Shu Feng, Feng-Guang Wu et al.
Modeling and experimental study on phase matching of second harmonic generation in different color HgGa[sub 2]S[sub 4] crystals are carried out. Using the known Sellmeier equations, the dispersion relation with weighting proportionally to short-wavelength boundary of the crystal transparency band is ... [Appl. Phys. Lett. 90, 181913 (2007)] published Tue May 1, 2007.
Second order optical nonlinearity of ZnO/ZnO:Al bilayers deposited on glass by low temperature radio frequency sputtering
F. Michelotti, R. Canali, L. Dominici, A. Belardini, F. Menchini et al.
The authors report on the measurement of the second order nonlinear optical properties of ZnO films deposited by low temperature radio frequency sputtering on ZnO:Al coated glass substrates. They show that ZnO:Al plays a crucial role as a buffer layer for the successive growth of ZnO. The effect of ... [Appl. Phys. Lett. 90, 181110 (2007)] published Tue May 1, 2007.
Erratum: Observation of two different types of optical supercontinua: Structured and structureless [Phys. Rev. A [bold 74], 053819 (2006)]
I. G. Koprinkov, Akira Suda, M. Narhuda, P. Wang, and Katsumi Midorikawa
... [Phys. Rev. A 75, 059901 (2007)] published Tue May 1, 2007.
Shear induced normal stress differences in aqueous foams
Vincent Labiausse, Reinhard Hohler, and Sylvie Cohen-Addad
A finite simple shear deformation of an elastic solid induces unequal normal stresses. This nonlinear phenomenon, known as the Poynting effect, is governed by a universal relation between shear strain and first normal stresses difference, valid for nondissipative isotropic elastic materials. We prov ... [J. Rheol. 51, 479 (2007)] published Tue May 1, 2007.
Approximating chaotic saddles for delay differential equations
S. Richard Taylor and Sue Ann Campbell
Chaotic saddles are unstable invariant sets in the phase space of dynamical systems that exhibit transient chaos. They play a key role in mediating transport processes involving scattering and chaotic transients. Here we present evidence (long chaotic transients and fractal basins of attraction) of ... [Phys. Rev. E 75, 046215 (2007)] published Mon Apr 30, 2007.
Vertical chaos and horizontal diffusion in the bouncing-ball billiard
Astrid S. de Wijn and Holger Kantz
The bouncing-ball billiard is a low-dimensional system with which transport properties of real physical systems can be studied theoretically. We study the bouncing-ball billiard with nonconvex scatterers and small slopes. We show that between the horizontal and vertical motion there is a separation ... [Phys. Rev. E 75, 046214 (2007)] published Mon Apr 30, 2007.
Structural and Electrical Investigations of Pulse-Laser-Deposited (Pb,Sr)TiO[sub 3] Films at Various Oxygen Partial Pressures
Jyh-Liang Wang, Yi-Sheng Lai, Sz-Chian Liou, Chen-Chia Chou, Chun-Chien Tsai et al.
Pulsed-laser deposited (Pb,Sr)TiO[sub 3] (PSrT) films on Pt/SiO[sub 2]/Si substrate deposited at various oxygen partial pressures (P[sub O[sub 2]]), ranging from 50 to 200 mTorr, were investigated in this work. PSrT films exhibit (100) preferred orientation at lower P[sub O[sub 2]] and then trans ... [J. Electrochem. Soc. 154, G141 (2007)] published Mon Apr 30, 2007.
Spatial Raman solitons in far-off resonant atomic systems
D. D. Yavuz
We predict two-frequency spatial optical solitons formed in atomic systems where a Raman transition is adiabatically prepared near a maximally coherent state. Using numerical simulations, we demonstrate the stability of these solitons against perturbations and investigate soliton-soliton collision p ... [Phys. Rev. A 75, 041802 (2007)] published Mon Apr 30, 2007.
Variational approach for the quantum Zakharov system
F. Haas
The quantum Zakharov system is described in terms of a Lagrangian formalism. A time-dependent Gaussian trial function approach for the envelope electric field and the low-frequency part of the density fluctuation leads to a coupled, nonlinear system of ordinary differential equations. In the semicla ... [Phys. Plasmas 14, 042309 (2007)] published Mon Apr 30, 2007.
Enhanced Raman scattering in thermally poled sodium-niobium borophosphate glasses
Marc Dussauze, Evelyne Fargin, Vincent Rodriguez, Artem Malakho, and Efstratios Kamitsos
Micro-Raman analysis has been carried out on the cross section of thermally poled sodium-niobium borophosphate glasses. We were able to measure with accuracy an enhanced Raman response from the nonlinear optical (NLO) layer formed at the anode side of the poled glasses. The thickness of the NLO laye ... [J. Appl. Phys. 101, 083532 (2007)] published Mon Apr 30, 2007.
Magnetophotorefractive effect of holographic recording in LiNbO[sub 3]:Fe crystals
Jiwei Qi, Jingjun Xu, Yudong Li, Fanlei Kong, Qian Sun et al.
An experimental investigation of the magnetophotorefractive effect for different holographic recording configurations is presented. Our results show that the diffraction efficiency of holographic grating strongly depends on the applied magnetic field for each configuration, since the magnetophotoref ... [J. Appl. Phys. 101, 083116 (2007)] published Mon Apr 30, 2007.
Geometric gyrokinetic theory for edge plasmas
H. Qin, R. H. Cohen, W. M. Nevins, and X. Q. Xu
It turns out that gyrokinetic theory can be geometrically formulated as a special case of a geometrically generalized Vlasov-Maxwell system. It is proposed that the phase space of the space-time is a seven-dimensional fiber bundle P over the four-dimensional space-time M, and that a Poincare-Cartan- ... [Phys. Plasmas 14, 056110 (2007)] published Mon Apr 30, 2007.
Absolute Negative Resistance Induced by Directional Electron-Electron Scattering in a Two-Dimensional Electron Gas
Ismet I. Kaya and Karl Eberl
A three-terminal device formed by two electrostatic barriers crossing an asymmetrically patterned two-dimensional electron gas displays an unusual potential depression at the middle contact, yielding absolute negative resistance. The device displays momentum and current transfer ratios that far exce ... [Phys. Rev. Lett. 98, 186801 (2007)] published Mon Apr 30, 2007.
Wave induced barrier transparency and melting of quasi-crystalline structures in two dimensional plasma turbulence
Amita Das
The conservation of energy and enstrophy in two dimensional inviscid hydrodynamics leads to dual cascade behavior. The energy cascades towards long scales and the enstrophy is transferred to shorter scales. The interplay of these dynamical processes leads to self organization and formation of cohere ... [Phys. Plasmas 14, 042307 (2007)] published Fri Apr 27, 2007.
Formulation of the relativistic moment implicit particle-in-cell method
Koichi Noguchi, Cesare Tronci, Gianluca Zuccaro, and Giovanni Lapenta
A new formulation is presented for the implicit moment method applied to the time-dependent relativistic Vlasov-Maxwell system. The new approach is based on a specific formulation of the implicit moment method that allows us to retain the same formalism that is valid in the classical case despite th ... [Phys. Plasmas 14, 042308 (2007)] published Fri Apr 27, 2007.
Single semiconductor nanocrystals: Physics and applications
U. Woggon
Semiconductor nanocrystals are nanoscale light sources that received much attention in recent years. We will give an overview about semiconductor colloidal nanocrystals as active optical materials in photonic structures and hybrid colloidal-epitaxial devices, for realizations of cavity quantum elect ... [J. Appl. Phys. 101, 081727 (2007)] published Fri Apr 27, 2007.
Large-scale correlated calculations of linear optical absorption and low-lying excited states of polyacenes: Pariser-Parr-Pople Hamiltonian
Priya Sony and Alok Shukla
We present large-scale correlated calculations of the linear optical absorption spectrum of oligo-acenes containing up to seven benzene rings. For the calculations we used the Pariser-Parr-Pople (PPP) Hamiltonian, along with the configuration interaction (CI) technique at various levels such as the ... [Phys. Rev. B 75, 155208 (2007)] published Fri Apr 27, 2007.
Equivalence of energy methods in stability theory
P. Birtea and M. Puta
We will prove the equivalence of three methods, the so called energy methods, in order to establish the stability of an equilibrium point for a dynamical system. We will illustrate by examples that this result simplifies enormously the amount of computations especially when the stability cannot be d ... [J. Math. Phys. 48, 042704 (2007)] published Fri Apr 27, 2007.
Demonstration of Electron-Bernstein-Wave Heating in a Tokamak via O-X-B Double-Mode Conversion
A. Mueck, L. Curchod, Y. Camenen, S. Coda, T. P. Goodman et al.
The first demonstration of electron-Bernstein-wave heating by double-mode conversion from the O to the X mode in an overdense H-mode tokamak plasma has been achieved in the Tokamak a Configuration Variable device. This technique overcomes the upper density limit experienced by conventional microwave ... [Phys. Rev. Lett. 98, 175004 (2007)] published Fri Apr 27, 2007.
Observation of Two-Dimensional Surface Solitons in Asymmetric Waveguide Arrays
A. Szameit, Y. V. Kartashov, F. Dreisow, T. Pertsch, S. Nolte et al.
We report on the experimental observation of two-dimensional surface waves localized at the edge or in the corner of femtosecond laser-written waveguide arrays in fused silica. Increasing the power of the input beam allows one to observe a clear transition from a linear diffraction pattern to locali ... [Phys. Rev. Lett. 98, 173903 (2007)] published Fri Apr 27, 2007.
Making nonlinearly realized global supersymmetry local
T. E. Clark, S. T. Love, Muneto Nitta, and T. ter Veldhuis
The method of nonlinear realizations is used to construct a low energy action describing the interactions of the Goldstino fermion associated with the spontaneous breaking of N = 1 supersymmetry in D = 4 dimensions. The full super-Poincare symmetry group is then gauged and it is shown how the result ... [AIP Conf. Proc. 903, 533 (2007)] published Fri Apr 27, 2007.
Floating Correlations on the String Landscape
Keith R. Dienes and Michael Lennek
The realization that string theory gives rise to a huge landscape of vacuum solutions has recently prompted a statistical approach towards extracting phenomenological predictions from string theory. Unfortunately, for most classes of string models, direct enumeration of all solutions is not computat ... [AIP Conf. Proc. 903, 505 (2007)] published Fri Apr 27, 2007.
On The Chaotic Dynamics Of Multiple Double Layers In Plasma
L. M. Ivan, S. A. Chiriac, M. Aflori, and D. G. Dimitriu
When a multiple double layers structure in plasma is driven far from equilibrium, it passes into a chaotic state, characterized by uncorrelated oscillations of the plasma parameters. Two scenarios of transition to chaos were identified: the Feigenbaum scenario (cascade of period doubling bifurcation ... [AIP Conf. Proc. 899, 698 (2007)] published Fri Apr 27, 2007.
Remarks on some periodic solutions of the nonlinear Schr[o-umlaut]dinger equation
D. Grecu and Anca Visinescu
Using the simple method of Akhmediev and Korneev, a special class of periodic solutions of NLS equation is fully investigated. They are expressed through Jacobi elliptic functions. The whole class (regular and singular solutions) is studied and classified. They are not under the form of traveling wa ... [AIP Conf. Proc. 899, 365 (2007)] published Fri Apr 27, 2007.
Observation of Supercontinuum Generation and Darkening Effect in Bro-Silicate Glass under 800 nm Femtosecond Irradiations
D. Abdolahpour and K. Jamshidi-Ghaleh
In this paper, we report the experimental observations of supercontinuum generation and darkening effect in bro-silicate glasses under 200 femtosecond pulses at wavelength of 800 nm. The spectrum of supercontinuum emission from the sample is recorded in the UV wavelength range. The length of filamen ... [AIP Conf. Proc. 899, 301 (2007)] published Fri Apr 27, 2007.
Study of Some Complexity Features in Physics of Materials
D. A. Iordache and V. Iordache
Taking into account the considerable importance of the complexity in the description of physical systems, this work aims to identify the main complexity features in Physics of materials, pointing out also both the corresponding fields and described phenomena, as well as some specific uses of these c ... [AIP Conf. Proc. 899, 255 (2007)] published Fri Apr 27, 2007.
Modifications in the Band Structure of a 2-Dimensional Kerr-Nonlinear Photonic Crystals
Ahmet Cicek and Bulent Ulug
Modifications in the band structure of a 2-dimensional photonic crystal composed of a square array of circular air holes drilled in a Kerr-type nonlinear dielectric material are investigated. Special attention is paid on the position and width of the overlap region of TE and TM band gaps. Angular fr ... [AIP Conf. Proc. 899, 241 (2007)] published Fri Apr 27, 2007.
Bifurcations of normally parabolic tori in Hamiltonian systems
IOP http://syndication.iop.org
Flux problem for a certain class of two-dimensional domains
IOP http://syndication.iop.org
On the construction of the Kolmogorov normal form for the Trojan asteroids
IOP http://syndication.iop.org
Dense chaos for continuous interval maps
IOP http://syndication.iop.org
Reduced dynamics of Ward solitons
IOP http://syndication.iop.org
A variational principle based study of KPP minimal front speeds in random shears
IOP http://syndication.iop.org
A complement to the connecting lemma of Hayashi
IOP http://syndication.iop.org
Asymptotic behaviour of quasi-stationary solutions of a nonlinear problem modelling the growth of tumours
IOP http://syndication.iop.org
Dynamics of monotone travelling fronts for discretizations of Nagumo PDEs
IOP http://syndication.iop.org
Supersymmetric modified Korteweg–de Vries equation: bilinear approach
IOP http://syndication.iop.org
Modeling Excitable Systems. (arXiv:0807.0451v1 [physics.bio-ph])
ePrint arXiv http://arXiv.org/
Eigenvalue cut-off in the cubic-quintic nonlinear Schrodinger equation. (arXiv:0807.0510v1 [nlin.PS])
ePrint arXiv http://arXiv.org/
Synchronization interfaces and overlapping communities in complex networks. (arXiv:0807.0521v1 [cond-mat.stat-mech])
ePrint arXiv http://arXiv.org/
Discrete Skyrmions in 2+1 and 3+1 Dimensions. (arXiv:0807.0538v1 [nlin.SI])
ePrint arXiv http://arXiv.org/
Delocalization induced by nonlinearity in systems with disorder. (arXiv:0805.0539v2 [cond-mat.dis-nn] UPDATED)
ePrint arXiv http://arXiv.org/