A study of energy behavior of the pion spectra and interferometry scales iscarried out for the top SPS, RHIC and LHC energies within the hydrokineticapproach. The latter allows one to describe evolution of quark-gluon and hadronmatter as well as continuous  | ![Energy dependence of pion interferometry scales in ultra-relativistic heavy ion collisions. (arXiv:0912.3457v1 [nucl-th]) Energy dependence of pion interferometry scales in ultra-relativistic heavy ion collisions. (arXiv:0912.3457v1 [nucl-th])](http://img2.en.redtram.com/news/236372687.jpg) |


The electromagnetic form factor of a confined quark-antiquark pair iscalculated within the framework of point-form relativistic quantum mechanics.The dynamics of theexchanged photon is explicitly taken into account bytreating theelectromagnetic scattering of an electron by a meson as arelativistic two-channel problem  | ![A relativistic coupled-channel formalism for the pion form factor. (arXiv:0912.3454v1 [nucl-th]) A relativistic coupled-channel formalism for the pion form factor. (arXiv:0912.3454v1 [nucl-th])](http://img2.en.redtram.com/news/236372681.jpg) |
We consider a physical scenario for ultra-relativistic heavy-ion collisionswhere, at the early stage, only transverse degrees of freedom of partons arethermalized, while the longitudinal motion is described by free streaming. Whenthe energy density of the partonic system drops to a  | ![Transverse hydrodynamics with sudden hadronization -- production of strangeness. (arXiv:0912.3451v1 [nucl-th]) Transverse hydrodynamics with sudden hadronization -- production of strangeness. (arXiv:0912.3451v1 [nucl-th])](http://img2.en.redtram.com/news/236372676.jpg) |
The parton rescattering effect on the charged particle production inultra-relativistic p+p collisions is studied by the parton and hadron cascademodel, PACIAE, based on PYTHIA. We have calculated charged particlepseudorapidity density ($dN_{ch}/d\eta$) at mid-rapidity and the pseudorapiditydistribution in inelastic and non-single  | ![Parton rescattering effect on particle production in ultra-relativistic p+p collisions. (arXiv:0912.3342v1 [nucl-th]) Parton rescattering effect on particle production in ultra-relativistic p+p collisions. (arXiv:0912.3342v1 [nucl-th])](http://img2.en.redtram.com/news/236372670.jpg) |


I describe in very simple terms the theoretical tools needed to investigateultra-peripheral nuclear reactions for nuclear astrophysics purposes. For amore detailed account, see .  | ![Nuclear astrophysics studies with ultra-peripheral heavy-ion collisions. (arXiv:0912.3307v1 [nucl-th]) Nuclear astrophysics studies with ultra-peripheral heavy-ion collisions. (arXiv:0912.3307v1 [nucl-th])](http://img2.en.redtram.com/news/236372662.jpg) |
In preparation for the extraction of pseudoscalar meson photo-productionamplitudes from a new generation of complete experiments, we assemble therelations between experimental observables and the Chew-Goldberger-Low-Nambuamplitudes. We present expressions that allow the direct calculation of matrixelements with arbitrary spin projections and  | ![Calculations of Polarization Observables in Pseudoscalar Meson Photo-production Reactions. (arXiv:0912.3505v2 [nucl-th]) Calculations of Polarization Observables in Pseudoscalar Meson Photo-production Reactions. (arXiv:0912.3505v2 [nucl-th])](http://img2.en.redtram.com/news/236372655.jpg) |
We have investigated the influence of different non-linear relativistic meanfield models ($NL$, $NL\rho$ and $NL\rho\delta$) on spallation neutrons forp+Fe and Pb reactions at 0.8, 1.2 and 1.6 GeV by means of a relativisticBoltzmann Uehling Uhlenbeck (RBUU) approach plus a statisticalmultifragmentation  |  |
Within a dynamical coupled-channels model which has already been fixed fromanalyzing the data of the pi N -> pi N and gamma N -> pi N reactions, wepresent the predicted double pion photoproduction cross sections up to thesecond resonance region,  | ![Double and single pion photoproduction within a dynamical coupled-channels model. (arXiv:0909.1129v2 [nucl-th] UPDATED) Double and single pion photoproduction within a dynamical coupled-channels model. (arXiv:0909.1129v2 [nucl-th] UPDATED)](http://img2.en.redtram.com/news/236372636.jpg) |
Dense hadronic matter at low temperature is expected to be in crystal and athigh density make a transition to a {\em chirally restored but color-confined}state which is a novel phase hitherto unexplored. This phase transition ispredicted in both skyrmion matter  | ![Kaons in Dense Half-Skyrmion Matter. (arXiv:0912.3213v1 [hep-ph] CROSS LISTED) Kaons in Dense Half-Skyrmion Matter. (arXiv:0912.3213v1 [hep-ph] CROSS LISTED)](http://img2.en.redtram.com/news/236372629.jpg) |
We have measured parity-violating asymmetries in elastic electron-proton andquasi-elastic electron-deuteron scattering at Q^2 = 0.22 and 0.63 GeV^2. Theyare sensitive to strange quark contributions to currents in the nucleon, and tothe nucleon axial current. The results indicate strange quark contributions  | ![Strange Quark Contributions to Parity-Violating Asymmetries in the Backward Angle G0 Electron Scattering Experiment. (arXiv:0909.5107v2 [nucl-ex] UPDATED) Strange Quark Contributions to Parity-Violating Asymmetries in the Backward Angle G0 Electron Scattering Experiment. (arXiv:0909.5107v2 [nucl-ex] UPDATED)](http://img2.en.redtram.com/news/236372623.jpg) |
Two 'events' silence the rumour mill  |  |
New kind of star would burn quarks and generate neutrinos  |  |
New thermometer could work down to a few trillionths of a Kelvin  |  |
We present a comparative analysis of multifractal properties of financialtime series built on stock indices from developing (WIG) and developed (S&P500)financial markets. It is shown how the multifractal image of the market isaltered with the change of the length of  | ![Multifractal dynamics of stock markets. (arXiv:0912.3390v1 [q-fin.ST]) Multifractal dynamics of stock markets. (arXiv:0912.3390v1 [q-fin.ST])](http://img2.en.redtram.com/news/236362985.jpg) |
We consider a plate made from an isotropic but brittle elastic material,which is used to span a rigid aperture, across which a small pressuredifference is applied. The problem we address is to find the structure whichuses the least amount of  | ![Fractal design for efficient brittle plates under gentle pressure loading. (arXiv:0912.3383v1 [physics.class-ph]) Fractal design for efficient brittle plates under gentle pressure loading. (arXiv:0912.3383v1 [physics.class-ph])](http://img2.en.redtram.com/news/236362974.jpg) |
Microscopic pyramidal pits in a reflective surface, a geometry similar to aretroreflector, are frequently used to enhance signal strength. The enhancementeffect is generally attributed to surface plasmons, however, the sub-wavelengthto near-wavelength dimensions of the pyramidal 3D geometry suggestcontributions from diffraction  | ![Resonance enhancement effects in Raman-enhancing pyramid-like V-shape groove microstructures. (arXiv:0912.3371v1 [physics.optics]) Resonance enhancement effects in Raman-enhancing pyramid-like V-shape groove microstructures. (arXiv:0912.3371v1 [physics.optics])](http://img2.en.redtram.com/news/236362965.jpg) |
In radiation processes such as a transition radiation, diffraction radiation,etc. based on relativistic electrons passing through or near an opaque screen,the electron self-field is partly shadowed after the screen over a distance ofthe order of the formation length $\gamma^2\lambda$. This  | !["Shadowing" of the electromagnetic field of relativistic charged particles. (arXiv:0912.3361v1 [physics.acc-ph]) "Shadowing" of the electromagnetic field of relativistic charged particles. (arXiv:0912.3361v1 [physics.acc-ph])](http://img2.en.redtram.com/news/236362957.jpg) |
Present work deals with the dynamics of vehicles which intentionally operatein the ground proximity. The dynamics in ground effect is influenced by thevehicle orientation with respect to the ground, since the aerodynamic force andmoment coefficients, which in turn depend on  | ![Performance and Stability of a Winged Vehicle in Ground Effect. (arXiv:0912.3355v1 [physics.class-ph]) Performance and Stability of a Winged Vehicle in Ground Effect. (arXiv:0912.3355v1 [physics.class-ph])](http://img2.en.redtram.com/news/236362944.jpg) |
In a previous study it was demonstrated that Dirac's relativistic quantumequation for free electrons (DRQM)can be obtained from Maxwell's classicalelectromagnetic field equations (MaxEq). This raises fundamental issues aboutthe demarcation between the classical and quantum domain and about spin. In thepresent  | ![Free particle gauge invariance of the Maxwell equations. (arXiv:0912.3324v1 [physics.gen-ph]) Free particle gauge invariance of the Maxwell equations. (arXiv:0912.3324v1 [physics.gen-ph])](http://img2.en.redtram.com/news/236362936.jpg) |
Wavefunction correction scheme, which was developed as a variance reductiontool for the fixed-node diffusion Monte Carlo (DMC) computations by Andersonand Freihaut, is applied on the DMC computations without using the fixed-nodeconstraint. This technique is found to be more suitable for  | ![Wavefunction correction scheme for non fixed-node diffusion Monte Carlo. (arXiv:0912.3401v1 [physics.comp-ph]) Wavefunction correction scheme for non fixed-node diffusion Monte Carlo. (arXiv:0912.3401v1 [physics.comp-ph])](http://img2.en.redtram.com/news/236362924.jpg) |
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