We carry out numerical investigations of the dynamics and perturbations in the Nflation model of Dimopoulos et al. (2005). This model features large numbers of scalar fields with different masses, which can cooperate to drive inflation according to the assisted inflation mechanism. We extend previous work to include random initial conditions for the scalar fields, and explore the predictions fo...

A precise determination of the strange quark mass, being one of the fundamental parameters in the Standard Model (SM), is of paramount interest in several areas of present day particle phenomenology. Until today two main methods have been employed to achieve this task. QCD sum rules [2] have been applied to various channels containing strange quantum numbers, in particular the scalar channel th...

In smartcard encryption and signature applications, randomised algorithms are used to increase tamper resistance against attacks based on side channel leakage. Recently several such algorithms have appeared which are suitable for RSA exponentiation and/or ECC point multiplication. We show that under certain apparently reasonable hypotheses about the countermeasures in place and the attacker’s m...

A sentence such as ‘Four children are blond’ can be interpreted as meaning either that at least four children are blond (weak reading), or that exactly four children are blond (strong reading). On the classical neo-Gricean view (Horn 1972), this ambiguity is similar to the ambiguity generated by scalar terms such as ‘some’, for which both a weak reading (i.e., some (possibly all)) and a strong ...

In the heavy quark limit, the heavy baryon Λ Q (Q=b or c) can be regarded as composed of a heavy quark and a scalar light diquark which has good spin and flavor quantum numbers. Based on this picture we establish the Bethe-Salpeter (B-S) equation for Λ Q in the leading order of 1/m Q expansion. With the kernel containing both the scalar confinement and one-gluon-exchange terms we solve the B-S ...

Wepresent ChunkStream, a system for efficient streaming and interactive editing of online video. Rather than using a specialized protocol and stream format, ChunkStream makes use of a generic mechanism employing chunks. Chunks are fixed-size arrays that contain a mixture of scalar data and references to other chunks. Chunks allow programmers to expose large, but fine-grained, data structures ov...

On purpose to elevate the efficiency of elliptic curve scalar multiplication in the device with weak computation power and to improve computational security, in this paper we pioneer a novel algorithm named Improvedm-ary, which is based on the depth first addition chain scheme and the improved m-ary mechanism compatible with a flexible width window. At first, we research and analyze the advanta...

In this paper, a parallel, power-efficient and scalable word-based crypto architecture is proposed that performs the operations required for scalar point multiplication including add, multiplication and inversion operations on GF(2) operands. The proposed architecture distinguishes itself from exiting architectures, including our prior architecture, by the fact that its resource usage and power...

The Higgs-boson lineshape is studied within the pinch technique resummation formalism. It is shown that any resonant Higgs-boson amplitude contains a universal part which is gauge independent, renormalization-group invariant, satisfies the optical and equivalence theorems, and constitutes the natural extension of the QED effective charge to the case of the Higgs scalar. PACS numbers: 11.10.Gh, ...

Scientific simulations and measurements often involve time dependent processes and produce time dependent data sets. Isosurface extraction is an important tool for visualizing three or twodimensional time varying scalar fields defined by such data. Nevertheless, the size of the data and the dynamic nature impose difficulty in devising efficient and effective time dependent isosurface extraction...