scholarly journals Implications of gauge unification for time variation of the fine structure constant

2002 ◽  
Vol 528 (1-2) ◽  
pp. 121-128 ◽  
Author(s):  
Paul Langacker ◽  
Gino Segrè ◽  
Matthew J. Strassler
Keyword(s):  
Fine Structure ◽  
Time Variation ◽  
Structure Constant ◽  
Fine Structure Constant

scholarly journals TIME VARIATION OF THE FINE STRUCTURE CONSTANT IN DECRUMPLING OR TVSD MODEL

2007 ◽  
Vol 16 (05) ◽  
pp. 899-907 ◽  
Author(s):  
FOROUGH NASSERI
Keyword(s):  
Fine Structure ◽  
Time Variation ◽  
Space Dimension ◽  
Structure Constant ◽  
Time Variable ◽  
Fine Structure Constant ◽  
Absolute Value ◽  
Upper Limit ◽  
Spatial Dimensions ◽  
Variable Space

Within the framework of a model universe with time variable space dimension (TVSD), known as decrumpling or TVSD model, we study the time variation of the fine structure constant. Using observational bounds on the present time variation of the fine structure constant, we are able to obtain an upper limit for the absolute value of the present time variation of spatial dimensions.

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