2007/07/23 by J. Niederle, Niederle, J., A. G. Nikitin +1
Mathematics · Physics and Astronomy · #35A30 #35Q55 #58J70 #81R05 #FOS: Physical sciences #Mathematical Physics (math-ph) #Quantum Physics (quant-ph) #math-ph #math.MP #msc:35A30 #msc:35Q55 #msc:58J70 #msc:81R05 #quant-ph
paper · pdf · doi:10.48550/arxiv.0707.3386
17 pages
arxiv created 2007/07/23 · arxiv updated 2009/12/01
Galilei invariant equations for massless fields are obtained via contractions of relativistic wave equations. It is shown that the collection of non-equivalent Galilei-invariant wave equations for massless fields with spin equal 1 and 0 is very broad and describes many physically consistent systems. In particular, there exist a huge number of such equations for massless fields which correspond to various contractions of representations of the Lorentz group to those of the Galilei one.