146 citations · 847 across the 74 of their papers we have counts for
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On kappa-deformed D=4 quantum conformal group
P. Kosiński, J. Lukierski, P. Maślanka
This paper is presented on the occasion of 60-th birthday of Jose Adolfo de Azcarraga who in his very rich scientific curriculum vitae has also a chapter devoted to studies of quan…
Depurification by Lorentz boosts
P. Kosinski, P. Maslanka
We consider a particle of half-integer spin which is nonrelativistic in the rest frame. Assuming the particle is completely polarized along third axis we calculate the Bloch vector…
Special relativity and reduced spin density matrices
Cezary Gonera, Piotr Kosinski, Pawel Maslanka
We derive the general formula for Lorentz-transformed spin density matrix. It is shown that an appropriate Lorentz transformation can prduce totally unpolarized state out of pure o…
On threshold amplitudes III: 2 into n processes
Joanna Domienik, Piotr Kosinski
The 2 into n scattering with final particles at rest is discussed. The comparison with purely soft processes allows to identify symmetries responsible for vanishing of certain 2 in…
Multiboson threshold production by fermion-antifermion pair and hidden symmetry
Joanna Domienik, Piotr Kosinski
We consider threshold production of arbitrary number of Higgs particles by fermion-antifermion pair. The nullification of amplitudes for the special case Higgs mass = 2 * fermion m…
Generalized kappa-Deformations and Deformed Relativistic Scalar Fields on Noncommutative Minkowski Space
P. Kosiński, P. Maślanka, J. Lukierski +1
We describe the generalized kappa-deformations of D=4 relativistic symmetries with finite masslike deformation parameter kappa and an arbitrary direction in kappa-deformed Minkowsk…
On threshold amplitudes II: Amplitudes nullification via classical symmetries
Joanna Domienik, Piotr Kosinski
The Ward identities for amplitudes at the tree level are derived from symmetries of the corresponding classical dynamical systems. The results are applied to some 2 into n amplitud…
"Isochronic" dynamical systems and nullification of amplitudes
Joanna Domienik, Piotr Kosinski
We construct the set of theories which share the property that the tree-level amplitudes nullify even if both initial and final states contain the same type of particles. The origi…