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Isoscalar dipole coherence at low energies and forbidden E1 strength
Isoscalar dipole coherence low energies forbidden E1 strength
2011/1/6
In 16O and 40Ca an isoscalar, low-energy dipole transition (IS-LED) exhausting approximately
4% of the isoscalar dipole (ISD) energy-weighted sum rule is experimentally known, but conspicuously absen...
Controlling surface plasmon polaritons in transformed coordinates
plasmon polaritons transformed coordinates
2010/11/16
Transformational optics allow for a markedly enhanced control of the electromagnetic wave trajectories within metamaterials with interesting applications ranging from perfect lenses to invisibility c...
Rare-gas clusters in intense VUV, XUV and soft x-ray pulses: Signatures of the transition from nanoplasma-driven cluster expansion to Coulomb explosion in ion and electron spectra
VUV XUV soft x-ray pulses
2010/11/16
We investigate the wavelength dependent ionization, heating, and expansion dynamics of medium-sized rare-gas clusters (Ar$_{923}$) under intense femtosecond short-wavelength free electron laser pulse...
Hadron electric polarizability -- finite volume corrections
Hadron electric polarizability finite volume corrections
2011/1/14
We use the background field method to extract the polarizability for the neutral “pion”. In our previous study we found that the polarizability for this system is negative which is believed to be a fi...
Studies of tau- -> eta.K-.nu and tau- -> eta.pi-.nu at BaBar and a search for a second-class current
tau- -> eta.K-.nu tau- -> eta.pi-.nu at BaBar second-class current
2011/1/4
We report on analyses of tau lepton decays − ! K− and − ! − ,with +−0, using 470 fb−1 of data from the BABAR experiment at PEP-II, collected at cente...
Bethe Ansatz for the Weakly Asymmetric Simple Exclusion Process and phase transition in the current distribution
Weakly Asymmetric Simple Exclusion Process phase transition current distribution
2010/11/23
The probability distribution of the current in the asymmetric simple exclusion process is expected to undergo a phase transition in the regime of weak asymmetry of the jumping rates. This transition w...
Collisional kinetics of non-uniform electric field, low-pressure, direct-current discharges in H$_{2}$
non-uniform electric field low-pressure direct-current discharges
2010/11/16
A model of the collisional kinetics of energetic hydrogen atoms, molecules, and ions in pure H$_2$ discharges is used to predict H$_\alpha$ emission profiles and spatial distributions of emission fro...
Exploring universality in nuclear clusters with Halo EFT
Halo nuclei Cluster systems Effective Field Theory
2011/1/6
I present results and highlight aspects of halo EFT to loosely bound systems composed of nucleons and alpha particles, with emphasis on Coulomb interactions.
Extra dimensions as a source of the electroweak model
Extra dimensions source of the electroweak model
2010/12/21
The Higgs boson of the Standard model is described by a set of off-diagonal components of the
multidimensional metric tensor, as well as the gauge fields. In the low-energy limit, the basic
properti...
$q{\bar q}$ Potential at Finite T and Weak Coupling in ${\cal N}=4$
$q{\bar q}$ Potential Finite T Weak ${\cal N}=4$
2011/1/10
We compute the potential between a q¯q singlet for N = 4 SUSY with gauge group SU(N) at finite temperature T, large distances rT ≫ 1 and weak coupling g. As a first step.
Laser field absorption in self-generated electron-positron pair plasma
Laser field self-generated electron-positron pair plasma
2010/11/17
Recently much attention has being attracted to the problem of limitations on the attainable intensity of high power lasers [A.M. Fedotov {\it et al.} Phys. Rev. Lett. \textbf{105}, 080402 (2010)]. Th...
Prevalence of different double ionization pathways and traces of three-body collisions in strongly driven Helium
double ionization three-body collisions driven Helium
2010/11/16
We present a unified treatment of the prevalence of different double ionization (DI) pathways as a function of the sum of the final electron energies in strongly driven Helium. We do so as a function...
Recent ionospheric modification experiments with the 3.6 MW transmitter at the High Frequency Active Auroral Research Program (HAARP) facility in Alaska led to discovery of artificial ionization desc...
Impact of squark generation mixing on the search for squarks and gluinos at LHC
Impact of squark generation mixing squarks and gluinos LHC
2011/1/6
We study the effect of squark-generation mixing on production and decays of squarks and gluinos at LHC in the Minimal Supersymmetric Standard Model (MSSM). We show that the mixing effects can be very ...
Positronium is an ideal system for the research of QED in the bound state. The hyperfine splitting of positronium (Ps-HFS: about 203 GHz)is a good tool to test QED and also sensitive to new physics be...