We present a quantitative semiclassical theory for the nonequilibrium dynamics of transverse Ising chains after quantum quenches, in particular, sudden changes of the transverse field strength. We obtain accurate predictions for the quench-dependent relaxation times and correlation lengths, and also about the recurrence times and quasiperiodicity of time-dependent correlations in finite systems...

The polarized photoluminescence excitation spectra of twenty-five single-walled carbon nanotube species are reported. For light polarized along the nanotube axis, the main absorption resonance at E22 shows sidebands attributed to phonon assisted absorption. Sidebands to E11 have a diameter dependent energy and are assigned to excited excitonic states. Along with longitudinal excitations, severa...

Wegeneralize the theory of Cooper-pairing by spin excitations in themetallic antiferromagnetic state to include situationswith electron and/or hole pockets.We show that Cooper-pairing arises from transverse spinwaves and fromgapped longitudinal spinfluctuations of comparable strength. However, each of these interactions, projected on a particular symmetry of the superconducting gap, acts primar...

It is important to demonstrate the use of plasmas for focusing positron and electron beams at high energy. By reducing the transverse area of colliding beams the plasma optical element affords a potential simplicity for enhancing the luminosity in the interaction region of linear colliders. Focusing of both transverse dimensions as well as both charge states has generated interest in this techn...

A brief review to string and parton percolation is presented. After a short introduction, the main consequences of percolation of color sources on the following observables in A-A collisions: J/ψ suppression, saturation of the multiplicity, dependence on the centrality of the transverse momentum fluctuations, Cronin effect and transverse momentum distributions, strength of the two and three bod...

In the pion decay channel of a neutrino factory the particles are transported in a solenoidal magnetic field, a 1.8 T constant field in the CERN reference scenario. Increasing the field strength decreases the transverse emittance of the decay muons. To define a lower limit on the achievable emittance, the reference scenario is compared with a study case where pions decay in a field of 20 T. Thi...

We study the propagation of sound in a homogeneous dipolar gas at zero temperature, known as zero sound. We find that below a critical dipolar interaction, undamped sound propagation is possible only in a range of solid angles around the direction of polarization of the dipoles. For larger interaction strength, zero sound propagates in all directions, but its nature changes as a function of dir...

AIMS To investigate how the interfacial shear strength of the dentin-post interface with and without defects changes for different combinations irrigant/sealer. METHODS In forty human decoronated and instrumented teeth, fibreglass posts were inserted. The obtained root segments were randomly assigned to four different groups according to the irrigant adopted and the cement used to seal the ro...

The bond characteristics of deformed reinforcing bars are investigated ctnd design equations for development and splice lengths are obtained with the goal of improving the bond strength of steel reinforcing bars to concrete. The research includes both experimental and analytical studies. The experimental studies involved evaluating the performance of deformed steel reinforcing bars with differe...

Turn-oo transients in current-modulated weakly-index-guided vertical-cavity surface-emitting lasers (VCSELs) are analyzed by using a model that takes into account all the transverse modes supported by the waveguide. Turn-oo transients strength is maximum for the current at which the VCSEL enters the multi-transverse-mode regime. Their strength signiicatively decreases for the multi-mode regime ...