A High performance and low power hardware architecture for H.264 cavlc algorithm

In this paper, we present a high performance and low power hard-ware architecture for real-time implementation of Context Adap-tive Variable Length Coding (CAVLC) algorithm used in H.264 / MPEG4 Part 10 video coding standard. This hardware is designed to be used as part of a complete low power H.264 video coding system for portable applications. The proposed architecture is im-plemented in Verilog HDL. The Verilog RTL code is verified to work at 76 MHz in a Xilinx Virtex II FPGA and it is verified to work at 233 MHz in a 0.18´ ASIC implementation. The FPGA and ASIC implementations can code 22 and 67 VGA frames (640x480) per second respectively

Excitonic condensation under spin-orbit coupling and BEC-BCS crossover

The condensation of electron-hole (e-h) pairs is studied at zero temperature and in the presence of a weak spin-orbit coupling (SOC) in the inversion-layer quantum wells. Under realistic conditions, a perturbative SOC can have observable effects in the order parameter of the experimentally long-searched-for excitonic condensate. Firstly, the fermion exchange symmetry is absent for the e-h pairs indicating a counterexample to the known classification schemes of fermion pairing. With the lack of fermion exchange, the condensate spin has no definite parity. Additionally, the excitonic SOC breaks the rotational symmetry yielding a complex order parameter in an unconventional way, i.e. the phase pattern of the order parameter is a function of the condensate density. This is manifested through finite off diagonal components of the static spin susceptibility, suggesting a new experimental method to confirm an excitonic condensate.Comment: Accepted for publication by Physical Review Letter

Electromagnetic properties of the neutrinos in gamma-proton collision at the LHC

We have investigated non-standard $\nu \bar \nu \gamma$ and $\nu \bar \nu \gamma \gamma$ couplings via $\nu \bar \nu$ production in a $\gamma p$ collision at the LHC. We obtain 95\% confidence level bounds on $\nu \bar \nu \gamma$ and $\nu \bar \nu \gamma \gamma$ couplings by considering three different forward detector acceptances; $0.0015 <\xi < 0.15$, $0.0015 <\xi < 0.5$ and $0.1 <\xi < 0.5$. We show that the reaction $p p\to p\gamma p\to p \nu \bar \nu q X$ provides more than eight orders of magnitude improvement in neutrino-two photon couplings compared to LEP limits.Comment: 18 pages, 5 figure