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pro vyhledávání: '"Valent, G."'
We present the proof of the one loop renormalizability in the strict field theoretic sense of the Poisson-Lie sigma models. The result is valid for any Drinfeld double and it relies solely on the Poisson-Lie structure encoded in the target manifold.<
Externí odkaz:
http://arxiv.org/abs/0902.1459
Autor:
Klimcik, C., Valent, G.
Publikováno v:
Phys.Lett. B565 (2003) 237-245
We perform a systematic study of the one-loop renormalizability of all Poisson-Lie T-dualizable $\si$-models with two-dimensional targets. We show that whatever Drinfeld double and whatever matrix of coupling constants we consider the corresponding $
Externí odkaz:
http://arxiv.org/abs/hep-th/0304053
Autor:
Valent, G.
The results obtained by Pauli, in his 1926 article on the hydrogen atom, made essential use of the dynamical so(4) symmetry of the bound states. Pauli used this symmetry to compute the perturbed energy levels of an hydrogen atom in a uniform electric
Externí odkaz:
http://arxiv.org/abs/quant-ph/0212010
Autor:
Valent, G.
The multi-centre metrics are a family of euclidean solutions of the empty space Einstein equations with self-dual curvature. For this full class, we determine which metrics do exhibit an extra conserved quantity quadraic in the momenta, induced by a
Externí odkaz:
http://arxiv.org/abs/hep-th/0212011
Autor:
Casteill, P. Y., Valent, G.
Publikováno v:
Nucl.Phys. B591 (2000) 491-514
We study the principal sigma-models defined on any group manifold GL x GR/GD with breaking of GR, and their T-dual transforms. For abritary breaking we can express the torsion and Ricci tensor of the dual model in terms of the frame geometry of the i
Externí odkaz:
http://arxiv.org/abs/hep-th/0006186
Autor:
Bonneau, G., Valent, G.
Publikováno v:
Class.Quant.Grav.11:1133-1154,1994
In the same spirit as done for N=2 and N=4 supersymmetric non-linear $\si$ models in 2 space-time dimensions by Zumino and Alvarez- Gaum\'e and Freedman, we analyse the (2,0) and (4,0) heterotic geometry in holomorphic coordinates. We study the prope
Externí odkaz:
http://arxiv.org/abs/hep-th/9401003
Autor:
Duval, C., Valent, G.
Publikováno v:
In Journal of Geometry and Physics 2011 61(8):1329-1347
Autor:
Letessier, J., Valent, G.
Publikováno v:
SIAM Journal on Applied Mathematics, 1984 Aug 01. 44(4), 773-783.
Externí odkaz:
https://www.jstor.org/stable/2101252
Autor:
Letessier, J., Valent, G.
Publikováno v:
SIAM Journal on Applied Mathematics, 1988 Feb 01. 48(1), 214-221.
Externí odkaz:
https://www.jstor.org/stable/2101505
Autor:
Letessier, J., Valent, G.
Publikováno v:
SIAM Journal on Applied Mathematics, 1986 Jun 01. 46(3), 393-405.
Externí odkaz:
https://www.jstor.org/stable/2101641