1 3 Ja n 20 04 Inconsistencies between lifetime and polarizability measurements in Cs

. at om - p h ] 3 1 Ja n 20 05 QED corrections to the parity - nonconserving 6 s - 7 s amplitude in 133 Cs

The complete gauge-invariant set of the one-loop QED corrections to the parity-nonconserving 6s-7s amplitude in Cs is evaluated to all orders in αZ using a local version of the Dirac-Hartree-Fock potential. The calculations are peformed in both length and velocity gauges for the absorbed photon. The total binding QED correction is found to be -0.27(3)%, which differs from previous evaluations o...

ar X iv : m at h / 04 01 12 6 v 1 [ m at h . N T ] 1 3 Ja n 20 04 THREE LECTURES ON THE RIEMANN ZETA - FUNCTION

Determination of polarizabilities and lifetimes for the Mg, Zn, Cd and Hg isoelectronic sequences

The dipole polarizability and adiabatic correlations of atomic ions are related to the energy levels and oscillator strengths of the levels through bracketing inequalities. For systems with a ground state ns2 S0, the total oscillator strength is dominated by the unbranched intrashell ns2 S0–nsnp P1 transition, and the remaining oscillator strength can be narrowly bracketed using the f -sum rule...

ar X iv : c s / 05 11 04 3 v 3 [ cs . C R ] 3 0 Ja n 20 06 Poseidon : a 2 - tier Anomaly - based Network Intrusion Detection System ∗

We present Poseidon, a new anomaly based network intrusion detection system. Poseidon is payload-based, and has a two-tier architecture: the first stage consists of a Self-Organizing Map, while the second one is a modified PAYL system [32]. Our benchmarks on the 1999 DARPA data set [23] show a higher detection rate and lower number of false positives than PAYL and PHAD.

ar X iv : n uc l - ex / 0 41 10 48 v 2 1 3 Ja n 20 05 Compton Scattering by the Nucleon ⋆

The status of Compton scattering by the nucleon at energies of the first and second resonance is summarized. In addition to a general test of dispersion theories and a precise determination of polarizabilities, the validities of four fundamental sum rules are explored. Recommended averages of experimental values for the electromagnetic polarizabilities and spin-polarizabilities of the nucleon a...