We study the properties of the 0 glueball at finite temperature using SU(3) quenched lattice QCD. We find a significant thermal effects near Tc. We perform the χ fit analyses adopting two Ansätze for the spectral function, i.e., the conventional narrow-peak Ansatz and an advanced Breit-Wigner Ansatz. The latter is an extension of the former, taking account of the appearance of the thermal width...

We study the 0 glueball correlator constructed with SU(3) anisotropic quenched lattice QCD at various temperature taking into account the possible existence of the thermal width in the ground-state peak. For this purpose, we adopt the Breit-Wigner ansatz, analysing the lattice data obtained with 5,500–9,900 gauge configurations at each T . The results indicate the significant thermal width broa...

Semi-analytic models of galaxy formation postulate the existence of virialized gaseous halos around galaxies at high redshifts. A small fraction of the light emitted by any high-redshift quasar is therefore expected to scatter off the free electrons in the halo of its host galaxy. The broadening of the scattered emission lines of the quasar can be used to measure the temperature of these electr...

Entrainment and mixing play an essential role in shaping the droplet size distribution (DSD), with commensurate effects on cloud radiative properties or precipitation formation. In this paper, we use a model that considers all relevant scales related to entrainment by employing linear eddy (LEM) as subgrid-scale (SGS) model, coupled large-eddy simulation Lagrangian (LCM) for single cumulus cong...

The directional dynamics of the resonant Rayleigh scattering from a semiconductor microcavity is investigated. When optically exciting the lower polariton branch, the strong dispersion results in a directional emission on a ring. The coherent emission ring shows a reduction of its angular width for increasing time after excitation, giving direct evidence for the time-energy uncertainty in the d...

Investigating the longitudinal optical conductivity of graphene systems, which is the mostimportant property for opto-electronic devices, for three-layer graphene systems theoretically and numerically is the main purpose of this study. Each layer can be mono- or bi-layer graphene. Separation between layers has been denoted by d, selected to be about ten nanometers. The carrier densities i...

The modifications of kaon properties in pion matter are investigated. In isotopically symmetric pionic matter the kaon mass (energy) does not change in lowest order chiral perturbation theory which describes the interaction between pseudoscalar mesons. At non-vanishing isovector densities the in-medium corrections to the kaon mass are found to be quite small, i.e. less than three MeV. However, ...

The thermal glueball is studied at finite temperature by using SU(3) anisotropic lattice QCD with βlat = 6.25, the renormalized anisotropy ξ ≡ as/at = 4 over the lattice of the size 20 × Nt with various Nt at the quenched level. While the narrow peak ansatz leads to the significant polemass reduction of about 300 MeV near the critical temperature Tc, Breit-Wigner ansatz which can take into acco...

The saturation process of free-electron-laser oscillators (FEL's) in the warm-beam regime is examined, considering radiation-extraction efficiency and spectral width. The spectral width and conversion efficiency can be estimated in both highand low-gain regimes when the laser-oscillator mode population is sparse enough. Under certain conditions, which can be achieved in a relativistic FEL with ...

We extend a theory of well-width fluctuations for inhomogeneous exciton broadening in quantum wells by expressing the fluctuation of the width in terms of the statistical characteristics of the morphological roughnesses of each interface forming the well. This allows us to take into account a possibility of cross correlations between the interfaces. We show that these correlations strongly supp...