Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Ebert, Dietmar"'
We study a generalised version of Gross-Neveu model in 2+1 dimensions. The model is inspired from graphene which shows a linear dispersion relation near the Dirac points. The phase structure and the thermodynamic properties in the mean field approxim
Externí odkaz:
http://arxiv.org/abs/2409.10507
Publikováno v:
JHEP 0902:028,2009
We study the question of a modification of the running gauge coupling of Yang-Mills theories due to quantum gravitational effects in a compact large extra dimensional brane world scenario with a low energy quantum gravity scale. The ADD scenario is a
Externí odkaz:
http://arxiv.org/abs/0809.0624
Publikováno v:
Phys.Lett.B660:579-582,2008
The question of a modification of the running gauge coupling of (non-) abelian gauge theories by an incorporation of the quantum gravity contribution has recently attracted considerable interest. In this letter we perform an involved diagrammatical c
Externí odkaz:
http://arxiv.org/abs/0710.1002
Publikováno v:
JHEP0412:022,2004
The k-string tensions are explored in the 4-d $[U(1)]^{N-1}$-invariant dual Abelian-Higgs-type theory. In the London limit of this theory, the Casimir scaling is found in the approximation when small-sized closed dual strings are disregarded. When th
Externí odkaz:
http://arxiv.org/abs/hep-th/0410167
Autor:
Antonov, Dmitri, Ebert, Dietmar
Publikováno v:
Phys.Atom.Nucl. 68 (2005) 558-566; Yad.Fiz. 68 (2005) 588-596
Field correlators and the string representation are used as two complementary approaches for the description of confinement in the SU(N)-inspired dual Abelian-Higgs-type model. In the London limit of the simplest, SU(2)-inspired, model, bilocal elect
Externí odkaz:
http://arxiv.org/abs/hep-th/0404258
The effective string action of the color-electric flux tube in the dual Ginzburg-Landau (DGL) theory is studied by performing a path-integral analysis by taking into account the finite thickness of the flux tube. A modified Yukawa interaction appears
Externí odkaz:
http://arxiv.org/abs/hep-ph/0212401
Publikováno v:
Nucl.Phys. B648 (2003) 189-202
The effective string action of the color-electric flux tube in the U(1) x U(1) dual Ginzburg-Landau (DGL) theory is studied by performing a path-integral analysis by taking into accountthe finite thickness of the flux tube. The DGL theory, correspond
Externí odkaz:
http://arxiv.org/abs/hep-th/0206074
Publikováno v:
JHEP 0208 (2002) 047
We perform a path-integral analysis of the string representation of the dual Abelian Higgs (DAH) model beyond the London limit, where the string describing the vortex of a flux tube has a finite thickness. We show that besides an additional vortex co
Externí odkaz:
http://arxiv.org/abs/hep-th/0108138
Autor:
Antonov, Dmitri, Ebert, Dietmar
Publikováno v:
Nucl.Phys.Proc.Suppl. 86 (2000) 456-459
We review the string representations of Abelian-projected SU(2)- and SU(3)-gauge theories and their application to the evaluation of bilocal field strength correlators. The large distance asymptotic behaviours of the latter ones are shown to be in ag
Externí odkaz:
http://arxiv.org/abs/hep-th/9909156
Autor:
Antonov, Dmitri, Ebert, Dietmar
By making use of the Abelian projection method, a dual version of the SU(2)-gluodynamics with manifest monopole-like excitations, arising from the integration over singular gauge transformations, is formulated in the continuum limit. The resulting ef
Externí odkaz:
http://arxiv.org/abs/hep-th/9902177