Vyacheslav Lysov

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It was shown by Low in the 1950s that the subleading terms of soft-photon S-matrix elements obey a universal linear relation. In this Letter, we give a new interpretation to this old relation, for the case of massless QED, as an infinitesimal symmetry of the S matrix. The symmetry is shown to be locally generated by a vector field on the conformal sphere at(More)
abstract: Let C(M) denote simplicial chain complex of standard triangulation of the standard combinatorial simplex builded on vertex set M and C(M) denote simplicial chain complex associated with its barycentric subdivision. Over a field of zero characteristic we write explicit formulas for functorial in M strong deformation retraction γ C(M) π-σ C(M)(More)
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