Buscar
Mostrando ítems 1-10 de 360
Cubic twistorial string field theory
(2004-04-01)
Witten has recently proposed a string theory in twistor space whose D-instanton contributions are conjectured to compute M = 4 super-Yang-Mills scattering amplitudes. An alternative string theory in twistor space was then ...
Seiberg-Witten for Spin(n) with spinors
(Springer, 2015-08-07)
N = 2 supersymmetric Spin(n) gauge theory admits hypermultiplets in spinor representations of the gauge group, compatible with beta <= 0, for n <= 14. The theories with beta < 0 can be obtained as mass-deformations of the ...
A nonabelian particle-vortex duality in gauge theories
(2016-08-01)
We define a nonabelian version of particle-vortex duality, by dimensionally extending usual (1+1)-dimensional nonabelian T-duality to (2+1) dimensions. While we will explicitly describe a global SU(2) symmetry, our methods ...
Ghost free dual vector theories in 2+1 dimensions
(Int School Advanced Studies, 2006-01-01)
We explore here the issue of duality versus spectrum equivalence in dual theories generated through the master action approach. Specifically we examine a generalized self-dual (GSD) model where a Maxwell term is added to ...
Ghost free dual vector theories in 2 + 1 dimensions
(2006-04-10)
We explore here the issue of duality versus spectrum equivalence in dual theories generated through the master action approach. Specifically we examine a generalized self-dual (GSD) model where a Maxwell term is added to ...
Second order gauge theory
(Elsevier B.V., 2007-05-01)
A gauge theory of second order in the derivatives of the auxiliary field is constructed following Utiyama's program. A novel field strength G = partial derivative F + fAF arises besides the one of the first order treatment, ...
Penrose limits of Abelian and non-Abelian T-duals of AdS 5 × S 5 and their field theory duals
(2018-01-01)
We consider the backgrounds obtained by Abelian and non-Abelian T-duality applied on AdS5 × S5. We study geodesics, calculate Penrose limits and find the associated plane-wave geometries. We quantise the weakly coupled ...
Light-cone gauge integrals: prescriptionlessness at two loops
(Elsevier B.V., 2000-11-30)
The only calculations performed beyond one-loop level in the light-cone gauge make use of the Mandelstam-Leibbrandt (ML) prescription in order to circumvent the notorious gauge dependent poles. Recently we have shown that ...
Comments on regularization ambiguities and local gauge symmetries
(World Scientific Publ Co Pte Ltd, 2005-08-20)
We study the regularization ambiguities in an exact renormalized (1 + 1)-dimensional field theory. We show a relation between the regularization ambiguities and the coupling parameters of the theory as well as their role ...
Remarks on entanglement entropy for gauge fields
(Amer Physical Soc, 2013-12)
In gauge theories the presence of constraints can obstruct expressing the global Hilbert space as a tensor product of the Hilbert spaces corresponding to degrees of freedom localized in complementary regions. In ...