Zobrazeno 1 - 10
of 640
pro vyhledávání: '"Ludlow J"'
Publikováno v:
Phys. Rev. A 92, 012505 (2015)
The random-phase approximation with exchange (RPAE) is used with a $B$-spline basis to compute dynamic dipole polarizabilities of noble-gas atoms and several other closed-shell atoms (Be, Mg, Ca, Zn, Sr, Cd, and Ba). From these, values of the van der
Externí odkaz:
http://arxiv.org/abs/1504.05334
Autor:
Ludlow, J. A., Lee, Teck-Ghee
Publikováno v:
Phys. Rev. A 91, 032507 (2015)
The static dipole polarisability of noble gas atoms confined by impenetrable spheres and spherical shells is studied using the B-spline random phase with exchange approximation. The general trend in dipole polarisabilities across the noble gas sequen
Externí odkaz:
http://arxiv.org/abs/1501.04327
Publikováno v:
Phys. Rev. A 90, 032712 (2014)
Positron scattering and annihilation on noble gas atoms below the positronium formation threshold is studied ab initio using many-body theory methods. The many-body theory provides a near-complete understanding of the positron-noble-gas-atom system a
Externí odkaz:
http://arxiv.org/abs/1404.5243
Autor:
Ludlow, J. A., Sushkov, O. P.
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. {\bf 46} 085001 (2013)
A positive experimental measurement of the nuclear Schiff moment would have important implications for physics beyond the standard model. To aid in the interpretation of a proposed experiment to measure the nuclear Schiff moment of $^{207}$Pb in the
Externí odkaz:
http://arxiv.org/abs/1210.2117
Autor:
McLaughlin, B. M., Lee, Teck-Ghee, Ludlow, J. A., Landi, E., Loch, S. D., Pindzola, M. S., Ballance, C. P.
Publikováno v:
J.Phys.B: At. Mol. Opt. Phys. 44 (2011) 175206
The five J$\Pi$ levels within a $np^2$ or $np^4$ ground state complex provide an excellent testing ground for the comparison of theoretical line ratios with astrophysically observed values, in addition to providing valuable electron temperature and d
Externí odkaz:
http://arxiv.org/abs/1102.5127
Autor:
Ludlow, J. A., Gribakin, G. F.
Publikováno v:
Int.Rev.Atom.Mol.Phys.1:73-83,2010
A many-body theory approach developed by the authors [Phys. Rev. A 70, 032720 (2004)] is applied to positron bound states and annihilation rates in atomic systems. Within the formalism, full account of virtual positronium (Ps) formation is made by su
Externí odkaz:
http://arxiv.org/abs/1002.3125
Autor:
Ludlow, J. A., Sushkov, O. P.
Publikováno v:
Phys. Rev. E {\bf 75}, 016204 (2007)
Using numerical simulations we investigate dynamical quantum chaos in isolated nuclear spin systems. We determine the structure of quantum states, investigate the validity of the Curie law for magnetic susceptibility and find the spectrum of magnetic
Externí odkaz:
http://arxiv.org/abs/cond-mat/0606635
Autor:
Gribakin, G. F., Ludlow, J.
Publikováno v:
Phys. Rev. A 70, 032720 (2004)
A many-body theory approach is developed for the problem of positron-atom scattering and annihilation. Strong electron-positron correlations are included non-perturbatively through the calculation of the electron-positron vertex function. It correspo
Externí odkaz:
http://arxiv.org/abs/physics/0403114
Akademický článek
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Autor:
Montano, X., Millikan, R., Milhaven, J. M., Newsome, D. A., Ludlow, J. W., Arthur, A. K., Fanning, E., Bikel, I., Livingston, D. M.
Publikováno v:
Proceedings of the National Academy of Sciences of the United States of America, 1990 Oct 01. 87(19), 7448-7452.
Externí odkaz:
https://www.jstor.org/stable/2355247
