It is shown that the potential functions for the ordinary linear sigma model can be divided into two topographically different types depending on whether the quantity R ≡ (mσ/mπ) is greater than or less than nine. Since the Wigner-Weyl mode (R = 1) and the Nambu-Goldstone mode (R = ∞) belong to different regions, we speculate that this classification may provide a generalization to the broken s...

We employ WKB approximation up to the third order to determine the low-lying quasinormal modes for Weyl neutrino field in R-N black holes, which are the most relevant to the evolution of the field around a black hole in the intermediate stage. It is showed that the quasinormal mode frequencies for Weyl neutrino field in R-N black holes are different from those in Schwartzchild black holes ownin...

A power-distortion (P-D) optimized coding modeselection scheme is proposed for variable bit rate videos in wireless code-division multiple-access (CDMA) systems. Unlike the conventional rate-distortion (R-D) optimized mode-selection methods, the proposed scheme takes into account time-varying channels. We show that the proposed optimization problem can be represented as the conventional R-D mod...

Experimental turbulence and transport characteristics in DIII–D plasmas have been compared with similar quantities calculated from gyro-kinetic and gyro-fluid turbulence simulations. Turbulent radial correlation lengths ∆r from DIII–D L–mode plasmas scale as 5 to 10 ρs (ρs = ion gyro-radius evaluated using the electron temperature) and are independent of the poloidal magnetic field. Comparisons...

First we examine the possibility of neglecting poles of the effective interaction within the work ing interval and the consequences of such a procedure . Secondly, the effective i n t e r a c t i o n 2 4 defined in A requires exact knowledge of the mode l states; f o r example to f o r m the matrix elements of the unperturbed Green-operator W e generalize our method, to a model space with unkno...