Nuclear-size self-energy and vacuum-polarization corrections to the bound-electrongfactor
نویسندگان
چکیده
منابع مشابه
Vacuum-polarization corrections to solar-fusion rates.
The vacuum-polarization corrections to rates for nuclear-fusion reactions in the pp chain and in the CNO cycle are calculated. For the reactions of particular importance to the solar-neutrino problem, the 3He(3He, 2p)4He, 3He(α, γ)7Be, 7Be(p, γ)8B, and 14N(p, γ)15O reactions, we find the magnitude of the effect to be less than 2%. The effect of VP on all the other reaction rates is expected to ...
متن کاملQCD Corrections to QED Vacuum Polarization
We compute QCD corrections to QED calculations for vacuum polarization in background magnetic fields. Formally, the diagram for virtual eē loops is identical to the one for virtual qq̄ loops. However due to confinement, or to the growth of αs as p 2 decreases, a direct calculation of the diagram is not allowed. At large p we consider the virtual qq̄ diagram, in the intermediate region we discuss ...
متن کاملVacuum-Polarization Corrections to Parity-Nonconserving Effects in Atomic Systems
The dominant one-loop vacuum-polarization correction to atomic wave functions are evaluated for the 6s–7s parity nonconserving (PNC) E1 transition amplitude in cesium. This correction increases the size of the PNC amplitude by 0.4% and thus increases the difference between the experimental value of the weak charge QW and the one predicted by the standard model.
متن کاملPositive Vacuum Energy and the N-bound
We argue that the total observable entropy is bounded by the inverse of the cosmological constant. This holds for all space-times with a positive cosmological constant, including cosmologies dominated by ordinary matter, and recollapsing universes. The argument involves intermediate steps which may be of interest in their own right. We note that entropy cannot be observed unless it lies both in...
متن کاملthe role of russia in transmission of energy from central asia and caucuses to european union
پس ازفروپاشی شوروی،رشد منابع نفت و گاز، آسیای میانه و قفقاز را در یک بازی ژئوپلتیکی انرژی قرار داده است. با در نظر گرفتن این منابع هیدروکربنی، این منطقه به یک میدانجنگ و رقابت تجاری برای بازی های ژئوپلتیکی قدرت های بزرگ جهانی تبدیل شده است. روسیه منطقه را به عنوان حیات خلوت خود تلقی نموده و علاقمند به حفظ حضورش می باشد تا همانند گذشته گاز طبیعی را به وسیله خط لوله مرکزی دریافت و به عنوان یک واس...
15 صفحه اولذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Physics B: Atomic, Molecular and Optical Physics
سال: 2013
ISSN: 0953-4075,1361-6455
DOI: 10.1088/0953-4075/46/24/245002