We shall give an axiomatic construction of Wess-Zumino-Witten actions valued in G = SU(N), N ≥ 3. It is realized as a functor WZ from the category of conformally flat four-dimensional manifolds to the category of line bundles with connection that satisfies, besides the axioms of a topological field theory, the axioms which abstract WessZumino-Witten actions. To each conformally flat four-dimens...

and Applied Analysis 3 We make the following assumptions. A1 W t, z ∈ C1 R × R2N,R is 1-periodic in t. W t, 0 0 for all t ∈ R. There exist constants c1 > 0 and μ > 2 such that Wz t, z z ≥ c1|z| for t, z ∈ R × R2N. A2 there exist c2, r > 0 such that |Wz t, z | ≤ c2|z|μ−1 for t ∈ R and |z| ≤ r. A3 there exist c3, R ≥ r and p ≥ μ such that |Wz t, z | ≤ c3|z|p−1 for t ∈ R and |z| ≥ R. A4 there exis...

Mobile-to-mobile video communications is one of the most requested services which operator networks can offer. However, in a framework where one mobile device sends video information to another, both transmitter and receptor should employ video encoders and decoders with low complexity. On the one hand, traditional video codecs, such as H.264, are based on architectures which have encoders with...

Antimicrobial effects of six antiseptics and disinfectants were studied against five pathogenic bacteria. Different pathogens responded differently to different antiseptics and disinfectants. Antibacterial effects of the antiseptics and disinfectants were also concentration dependent. Formalin and hydrogen peroxide were highly effective against all the pathogens used while phenyl and iodine wer...

The process p p (−) → W±Z + X → `1 ν1`2 `2 + X is calculated to O(αs) for general C and P conserving WWZ couplings. At the Tevatron center of mass energy, the QCD corrections to WZ production are modest. At Large Hadron Collider (LHC) energies, the inclusive QCD corrections are large, but can be reduced significantly if a jet veto is imposed. Sensitivity limits for the anomalous WWZ couplings a...

We shall give an axiomatic construction of Wess-Zumino-Witten actions valued in G = SU(N), N ≥ 3. It is realized as a functor WZ from the category of conformally flat four-dimensional manifolds to the category of line bundles with connection that satisfies, besides the axioms of a topological field theory, the axioms which abstract the characteristics of Wess-Zumino-Witten actions. To each conf...

Using transient Rayleigh scattering (TRS) measurements, we obtain photoexcited carrier thermalization dynamics for both zincblende (ZB) and wurtzite (WZ) InP single nanowires (NW) with picosecond resolution. A phenomenological fitting model based on direct band-to-band transition theory is developed to extract the electron-hole-plasma density and temperature as a function of time from TRS measu...

We employ effective-mass theory for degenerate hole bands to calculate the acceptor binding energies for Be, Mg, Zn, Ca, C, and Si substitutional acceptors in GaN and AlN. The calculations are performed through the 636 Rashba-Sheka-Pikus and the Luttinger-Kohn matrix Hamiltonians for wurtzite ~WZ! and zinc-blende ~ZB! crystal phases, respectively. An analytic representation for the acceptor pse...

It has been reported that phase structure and surface polarity largely affect the photocatalytic efficiency of semiconductor nanostructures. To understand the chemical activity of ZnS at the electronic level, we investigate electron structures and carrier transportation ability for bulk intrinsic zinc blende (ZB) and wurtzite (WZ) ZnS, as well as the reaction pathway of hydrogen generation from...