Zobrazeno 1 - 10
of 291
pro vyhledávání: '"Berkovits, N."'
Autor:
Berkovits, N., Howe, P. S.
Publikováno v:
JHEP 0806:046,2008
The superform construction of supersymmetric invariants, which consists of integrating the top component of a closed superform over spacetime, is reviewed. The cohomological methods necessary for the analysis of closed superforms are discussed and so
Externí odkaz:
http://arxiv.org/abs/0803.3024
Publikováno v:
Nucl.Phys. B567 (2000) 61-86
We quantize the superstring on the AdS_2 x S^2 background with Ramond-Ramond flux using a PSU(1,1|2)/U(1) x U(1) sigma model with a WZ term. One-loop conformal invariance of the model is guaranteed by a general mechanism which holds for coset spaces
Externí odkaz:
http://arxiv.org/abs/hep-th/9907200
Publikováno v:
Phys.Lett. B454 (1999) 247-248
We write the BRST operator of the N=1 superstring as $Q= e^{-R} (\oint dz \gamma^2 b)e^R$ where $\gamma$ and $b$ are super-reparameterization ghosts. This provides a trivial proof that $Q$ is nilpotent.
Comment: 4 pages latex
Comment: 4 pages latex
Externí odkaz:
http://arxiv.org/abs/hep-th/9902178
Publikováno v:
JHEP 9903:018,1999
We review a formalism of superstring quantization with manifest six-dimensional spacetime supersymmetry, and apply it to AdS_3 x S^3 backgrounds with Ramond-Ramond flux. The resulting description is a conformal field theory based on a sigma model who
Externí odkaz:
http://arxiv.org/abs/hep-th/9902098
Autor:
Berkovits, N., Leite, M. M.
Publikováno v:
Phys.Lett. B454 (1999) 38-42
Using the manifestly spacetime-supersymmetric version of open superstring field theory, we construct the free action for the first massive states of the open superstring compactified to four dimensions. This action is in N=1 D=4 superspace and descri
Externí odkaz:
http://arxiv.org/abs/hep-th/9812153
Autor:
Berkovits, N., Hull, C.
Publikováno v:
JHEP 9802:012,1998
Using an infinite number of fields, we construct actions for D=4 self-dual Yang-Mills with manifest Lorentz invariance and for D=10 super-Yang-Mills with manifest super-Poincar\'e invariance. These actions are generalizations of the covariant action
Externí odkaz:
http://arxiv.org/abs/hep-th/9712007
Autor:
Berkovits, N., Leite, M. M.
Publikováno v:
Phys.Lett. B415 (1997) 144-148
Using the manifestly spacetime supersymmetric description of the four-dimensional open superstring, we construct the vertex operator in superspace for the first massive state. This construction provides an N=1 D=4 superspace representation of the mas
Externí odkaz:
http://arxiv.org/abs/hep-th/9709148
Autor:
Medina, R., Berkovits, N.
Publikováno v:
Phys.Rev. D56 (1997) 6388-6390
Pasti, Sorokin and Tonin have recently constructed manifestly Lorentz-invariant actions for self-dual field strengths and for Maxwell fields with manifest electromagnetic duality. Using the method of Deser, Gomberoff, Henneaux and Teitelboim, we gene
Externí odkaz:
http://arxiv.org/abs/hep-th/9704093
Autor:
Berkovits, N., Siegel, W.
Publikováno v:
Nucl.Phys. B505 (1997) 139-152
We give a gauge and manifestly SO(2,2) covariant formulation of the field theory of the self-dual string. The string fields are gauge connections that turn the super-Virasoro generators into covariant derivatives.
Comment: 16 pg., plain tex
Comment: 16 pg., plain tex
Externí odkaz:
http://arxiv.org/abs/hep-th/9703154
Publikováno v:
Nucl.Phys. B371 (1992) 434-466
We discuss the conformal field theory and string field theory of the NSR superstring using a BRST operator with a nonminimal term, which allows all bosonic ghost modes to be paired into creation and annihilation operators. Vertex operators for the Ne
Externí odkaz:
http://arxiv.org/abs/hep-th/9108021