Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Stanev, Yassen S."'
Autor:
Stanev, Yassen S.
Publikováno v:
Bulg.J.Phys. 40 (2013) 147-152
We report some recent progress in the computation of the n-point correlation functions of conserved currents in a class of four dimensional conformal field theories with higher spin symmetry. Global conformal invariance leads to very strong constrain
Externí odkaz:
http://arxiv.org/abs/1312.1467
Autor:
Stanev, Yassen S.
We analyze the constraints on the general form and the singularity structure of the correlation functions of the symmetric, traceless and conserved stress-energy tensor implied by conformal invariance and higher spin symmetry in four dimensions. In p
Externí odkaz:
http://arxiv.org/abs/1307.5209
Autor:
Stanev, Yassen S.
We derive a generating function for all the 3-point functions of higher spin conserved currents in four dimensional conformal field theory. The resulting expressions have a rather surprising factorized form which suggest that they can all be realized
Externí odkaz:
http://arxiv.org/abs/1206.5639
Autor:
Anastasopoulos, Pascal, Fucito, Francesco, Lionetto, Andrea, Pradisi, Gianfranco, Racioppi, Antonio, Stanev, Yassen S.
Publikováno v:
Phys.Rev.D78:085014,2008
We study an extension of the MSSM by an anomalous abelian vector multiplet and a St\"uckelberg multiplet. The anomalies are cancelled by the Green-Schwarz mechanism and the addition of Chern-Simons terms. The advantage of this choice over the standar
Externí odkaz:
http://arxiv.org/abs/0804.1156
Publikováno v:
JHEP 0703:059,2007
We derive general formulae for tree level gauge couplings and their one-loop thresholds in Type I models based on genuinely interacting internal N=2 SCFT's, such as Gepner models. We illustrate our procedure in the simple yet non-trivial instance of
Externí odkaz:
http://arxiv.org/abs/hep-th/0612234
Autor:
Genovese, Luigi, Stanev, Yassen S.
Publikováno v:
Nucl.Phys. B721 (2005) 212-228
We reconsider the general constraints on the perturbative anomalous dimensions in conformal invariant QFT and in particular in N=4 SYM with gauge group SU(N_c). We show that all the perturbative corrections to the anomalous dimension of a renormalize
Externí odkaz:
http://arxiv.org/abs/hep-th/0503084
Publikováno v:
Nucl.Phys. B685 (2004) 65-88
We reexamine the problem of operator mixing in N = 4 SYM. Particular attention is paid to the correct definition of composite gauge invariant local operators, which is necessary for the computation of their anomalous dimensions beyond lowest order. A
Externí odkaz:
http://arxiv.org/abs/hep-th/0312228
Publikováno v:
Nucl.Phys. B670 (2003) 373-400
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 {\it globally conformal invariant} (GCI) theory we write down the OPE of
Externí odkaz:
http://arxiv.org/abs/hep-th/0305200
The singular part of the \textit{operator product expansion} (OPE) of a pair of \textit{globally conformal invariant} (GCI) scalar fields $\phi$ of (integer) dimension $d$ can be written as a sum of the 2-point function of $\phi$ and $d-1$ bilocal co
Externí odkaz:
http://arxiv.org/abs/hep-th/0211106
Publikováno v:
Nucl.Phys. B646 (2002) 69-101
We resolve the mixing of the scalar operators of naive dimension 4 belonging to the representation 20' of the SU(4) R-symmetry in N=4 SYM. We compute the order g^2 corrections to their anomalous dimensions and show the absence of instantonic contribu
Externí odkaz:
http://arxiv.org/abs/hep-th/0205321