On the cosmological variation of the fine-structure constant
نویسندگان
چکیده
منابع مشابه
On the cosmological variation of the fine structure constant
A phenomenological model is proposed to explain the recent observed cosmological variation of the fine structure constant as an effect of the quantum vacuum, assuming a flat universe with cosmological constant Λ in the cases (ΩM ,ΩΛ) equal to (0.3, 0.7) and (1, 0). Because of the fourth Heisenberg relation, the lifetime of the virtual pairs of the zero-point radiation must depend on the gravita...
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the structure of lie derivations on c*-algebras
نشان می دهیم که هر اشتقاق لی روی یک c^*-جبر به شکل استاندارد است، یعنی می تواند به طور یکتا به مجموع یک اشتقاق لی و یک اثر مرکز مقدار تجزیه شود. کلمات کلیدی: اشتقاق، اشتقاق لی، c^*-جبر.
15 صفحه اولVarying Fine-Structure Constant and the Cosmological Constant Problem1
We start with a brief account of the latest analysis of the Oklo phenomenon providing the still most stringent constraint on time-variability of the fine-structure constant α. Comparing this with the recent result from the measurement of distant QSO’s appears to indicate a non-uniform time-dependence, which we argue to be related to another recent finding of the accelerating universe. This view...
متن کاملThe fine-structure constant: a new observational limit on its cosmological variation and some theoretical consequences
Endeavours of the unification of the four fundamental interactions have resulted in a development of theories having cosmological solutions in which low-energy limits of fundamental physical constants vary with time. The validity of such theoretical models should be checked by comparison of the theoretical predictions with observational and experimental bounds on possible time-dependences of th...
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ژورنال
عنوان ژورنال: Europhysics Letters (EPL)
سال: 2003
ISSN: 0295-5075,1286-4854
DOI: 10.1209/epl/i2003-00209-3