40 citations · 162 across the 13 of their papers we have counts for
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Cohomological analysis of the Epstein-Glaser renormalization
Nikolay M. Nikolov
A cohomological analysis of the renormalization freedom is performed in the Epstein-Glaser scheme on a flat Euclidean space. We study the deviation from commutativity between the r…
Infinite dimensional Lie algebras in 4D conformal quantum field theory
B. Bakalov, N. M. Nikolov, K. -H. Rehren +1
The concept of global conformal invariance (GCI) opens the way of applying algebraic techniques, developed in the context of 2-dimensional chiral conformal field theory, to a highe…
Harmonic bilocal fields generated by globally conformal invariant scalar fields
Nikolay M. Nikolov, Karl-Henning Rehren, Ivan Todorov
The twist two contribution in the operator product expansion of phi_1(x_1) phi_2(x_2) for a pair of globally conformal invariant, scalar fields of equal scaling dimension d in four…
Partial wave expansion and Wightman positivity in conformal field theory
N. M. Nikolov, K. -H. Rehren, I. T. Todorov
A new method for computing exact conformal partial wave expansions is developed and applied to approach the problem of Hilbert space (Wightman) positivity in a non-perturbative fou…
Vertex Algebras in Higher Dimensions and Globally Conformal Invariant Quantum Field Theory
Nikolay M. Nikolov
We propose an extension of the definition of vertex algebras in arbitrary space-time dimensions together with their basic structure theory. An one-to-one correspondence between the…
Globally conformal invariant gauge field theory with rational correlation functions
Nikolay M. Nikolov, Yassen S. Stanev, Ivan T. Todorov
Operator product expansions (OPE) for the product of a scalar field with its conjugate are presented as infinite sums of bilocal fields V_k (x_1, x_2) of dimension (k,k). For a {\i…