International Conference on Precision Physics and Fundamental Physical Constants (FFK-2015)

Session

Theory

15 Oct 2015, 11:00

Kis terem (Small conference room) (Hungarian Academy of Sciences)

Conveners

Theory

• Krzysztof Pachucki (University of Warsaw)

40. Newton force with a delay: 5th digit of G

Prof. Lajos Diósi (Wigner Research Centre for Physics, Budapest, Hungary)

15/10/2015, 11:00

I have recently proposed a slight non-relativistic modification of the Newton law of universal gravitation [1,2]. Accordingly, the 1/r Newton field is following the motion of the source with a certain
 laziness characterized by the delay time τ_G. The background motivation came from quantum foundational
 speculations [3,4] yielding an estimate τ_G ∼ 1ms. Surprisingly, in the simplest model...

17. Theory of the bound-electron g-factor

Dr Zoltán Harman (Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg, Germany)

15/10/2015, 11:30

Quantum electrodynamic (QED) effects in strong fields can be scrutinized to high precision in Penning trap experiments: a recent measurement yielded a value for the $g$-factor of hydrogenlike silicon with a $5 \times 10^{-10}$ fractional uncertainty, allowing to test certain higher-order QED corrections for the first time [1]. The measured $g$-factor is in excellent agreement with the...

4. Spin-statistic selection rules for multiphoton transitions in atomic systems

Mr Timur Zalialiutdinov (St.-Petersburg State University)

15/10/2015, 12:00

We establish the existence of spin-statistic selection rules (SSSRs) for multiphoton transitions with equal photons in atomic systems. These selection rules are similar to those for systems of many equivalent electrons in atomic theory. The latter are a direct consequence of the Pauli exclusion principle. In this sense, the SSSRs play the role of the exclusion principle for photons: they...

43. Ionization of atoms by positron and positronium impact

Károly Tökési (MTA ATOMKI)

15/10/2015, 12:30

Understanding the ionization process during atomic collisions is fundamental both from the experimental and theoretical points of view. Ionization by positron impact has also been extensively studied in recent decades. In most cases noble gas atoms were used as the target For designing new experiments, such as production of antimatter, ionization cross sections for any other atoms are also...