52 citations · 189 across the 12 of their papers we have counts for
12 papers
Biharmonic Superspace for N=4 Mechanics
E. Ivanov, J. Niederle
We develop a new superfield approach to N=4 supersymmetric mechanics based on the concept of biharmonic superspace (bi-HSS). It is an extension of the N=4,d=1 superspace by two set…
Galilei-invariant equations for massive fields
J. Niederle, A. G. Nikitin
Galilei-invariant equations for massive fields with various spins have been found and classified. They have been derived directly, i.e., by using requirement of the Galilei invaria…
Galilean equations for massless fields
J. Niederle, A. G. Nikitin
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 wa…
Galilei invariant theories. III. Wave equations for massless fields
J. Niederle, A. G. Nikitin
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 wa…
Galilei invariant theories. II. Wave equations for massive fields
J. Niederle, A. G. Nikitin
Galilei invariant equations for massive fields with various spins are found and classified. They have been obtained directly, i.e., by using requirement of Galilei invariance and t…
Galilei invariant theories. I. Constructions of indecomposable finite-dimensional representations of the homogeneous Galilei group: directly and via contractions
M. de Montigny, J. Niederle, A. G. Nikitin
All indecomposable finite-dimensional representations of the homogeneous Galilei group which when restricted to the rotation subgroup are decomposed to spin 0, 1/2 and 1 representa…