388 citations · 1k across the 46 of their papers we have counts for
5 papers · 1 filter
Algebraic algorithm for next-to-leading order calculations in the large-s/small-x regime
A. V. Stepanova, F. V. Tkachov
We present an algebraic algorithm for analytical calculation of arbitrary dimensionally regulated massless two-loop forward-scattering diagrams that constitute the most cumbersome…
Landau equations and asymptotic operation
Fyodor V. Tkachov
The pinched/non-pinched classification of intersections of causal singularities of propagators in Minkowski space is reconsidered in the context of the theory of asymptotic operati…
Towards systematic near-threshold calculations in perturbative QFT
Fyodor V. Tkachov
For any near-threshold asymptotic regime and for any Feynman diagram (involving loop and/or phase space integrals), a systematic prescription for explicitly constructing all-logs,…
From jet algorithms to C-algebra. Measurement errors and regularization of cuts
Fyodor V. Tkachov
Error enhancement properties of data processing algorithms in elementary particle physics measurements are discussed. It is argued that a systematic use of continuous weights inste…
Theory of asymptotic operation. A summary of basic principles
Fyodor V. Tkachov
This summary of several talks given in 1990-1993 discusses the problem of asymptotic expansions of multiloop Feynman diagrams in masses and external momenta - a central problem in…