Results 1  10
of
19
A note on the classical BRST symmetry of the pure spinor string in a curved background,” JHEP 0607
, 2006
"... The classical pure spinor version of the heterotic superstring in a supergravity and super YangMills background is considered. We obtain the BRST transformations of the worldsheet fields. They are consistent with the constraints obtained from the nilpotence of the BSRT charge and the holomorphicit ..."
Abstract

Cited by 11 (5 self)
 Add to MetaCart
(Show Context)
The classical pure spinor version of the heterotic superstring in a supergravity and super YangMills background is considered. We obtain the BRST transformations of the worldsheet fields. They are consistent with the constraints obtained from the nilpotence of the BSRT charge and the holomorphicity of the BRST current.
Oneloop Conformal Invariance of the Type II Pure Spinor Superstring in a Curved Background,” JHEP 0701
, 2007
"... We compute the oneloop beta functions for the Type II superstring using the pure spinor formalism in a generic supergravity background. It is known that the classical pure spinor BRST symmetry puts the background fields onshell. In this paper we show that the oneloop beta functions vanish as a co ..."
Abstract

Cited by 10 (2 self)
 Add to MetaCart
(Show Context)
We compute the oneloop beta functions for the Type II superstring using the pure spinor formalism in a generic supergravity background. It is known that the classical pure spinor BRST symmetry puts the background fields onshell. In this paper we show that the oneloop beta functions vanish as a consequence of the classical BRST symmetry of the action.
On string integrability  A journey through the twodimensional hidden symmetries in the AdS/CFT dualities
, 2010
"... One of the main topics in the modern String Theory are the AdS/CFT dualities. Proving such conjectures is extremely difficult since the gauge and string theory perturbative regimes do not overlap. In this perspective, the discovery of infinitely many conserved charges, i.e. the integrability, in th ..."
Abstract

Cited by 5 (0 self)
 Add to MetaCart
One of the main topics in the modern String Theory are the AdS/CFT dualities. Proving such conjectures is extremely difficult since the gauge and string theory perturbative regimes do not overlap. In this perspective, the discovery of infinitely many conserved charges, i.e. the integrability, in the planar AdS/CFT has allowed us to reach immense progresses in understanding and confirming the duality. We review the fundamental concepts and properties of integrability in twodimensional σmodels and in the AdS/CFT context. The first part is focused on the AdS5/CFT4 duality, especially the classical and quantum integrability of the type IIB superstring on AdS5 × S5 are discussed in both pure spinor and GreenSchwarz formulations. The second part is dedicated to the AdS4/CFT3 duality with particular attention to the type IIA superstring on AdS4 × CP 3 and its integrability. This review is based on a shortened and revised version of the author’s PhD thesis, discussed at Uppsala University in September 2009.
BRST Anomaly and Superspace Constraints of the Pure Spinor Heterotic String in a Curved Background
, 2007
"... The pure spinor heterotic string in a generic super YangMills and supergravity background is considered. We determine the oneloop BRST anomaly at the cohomological level. We prove that it can be absorbed by consistent corrections of the classical constraints due to Berkovits and Howe, in agreement ..."
Abstract

Cited by 4 (2 self)
 Add to MetaCart
(Show Context)
The pure spinor heterotic string in a generic super YangMills and supergravity background is considered. We determine the oneloop BRST anomaly at the cohomological level. We prove that it can be absorbed by consistent corrections of the classical constraints due to Berkovits and Howe, in agreement with the GreenSchwarz cancelation mechanism.
YangMills ChernSimons Corrections From The Pure Spinor Superstring
, 2008
"... Nilpotency of the pure spinor BRST operator in a curved background implies superspace equations of motion for the background. By computing oneloop corrections to nilpotency for the heterotic sigma model, the YangMills ChernSimons corrections to the background are derived. ..."
Abstract

Cited by 1 (0 self)
 Add to MetaCart
(Show Context)
Nilpotency of the pure spinor BRST operator in a curved background implies superspace equations of motion for the background. By computing oneloop corrections to nilpotency for the heterotic sigma model, the YangMills ChernSimons corrections to the background are derived.
Simplified Pure Spinor b Ghost in a Curved Heterotic Superstring Background,” [arXiv:1403.2429 [hepth
"... ar ..."
(Show Context)
Note About Redefinition of BRST Operator for Pure Spinor String in General Background
, 803
"... Preprint typeset in JHEP style HYPER VERSION hepth/0803.4390 ..."
(Show Context)
Compactification of the Heterotic Pure Spinor
, 907
"... In this paper we begin the study of compactifications of the pure spinor formalism for superstrings. As a first example of such a process we study the case of the heterotic string in a CalabiYau background. We explicitly construct a BRST operator imposing N = 1 fourdimensional supersymmetry and sh ..."
Abstract
 Add to MetaCart
(Show Context)
In this paper we begin the study of compactifications of the pure spinor formalism for superstrings. As a first example of such a process we study the case of the heterotic string in a CalabiYau background. We explicitly construct a BRST operator imposing N = 1 fourdimensional supersymmetry and show that nilpotence implies Kähler and Ricciflatness conditions. The massless spectrum is computed using this BRST operator and it agrees with the expected result. 1
2.2 Tendimensional, N = 1 Supersymmetry.................... 5
, 907
"... In this paper we begin the study of compactifications of the pure spinor formalism for superstrings. As a first example of such a process we study the case of the heterotic string in a CalabiYau background. We explicitly construct a BRST operator imposing N = 1 fourdimensional supersymmetry and sh ..."
Abstract
 Add to MetaCart
(Show Context)
In this paper we begin the study of compactifications of the pure spinor formalism for superstrings. As a first example of such a process we study the case of the heterotic string in a CalabiYau background. We explicitly construct a BRST operator imposing N = 1 fourdimensional supersymmetry and show that nilpotence implies Kähler and Ricciflatness conditions. The massless spectrum is computed using this BRST operator and it agrees with the expected result.