# N=4 superconformal symmetry for the covariant quantum superstring [rapid communication]

@article{Grassi2005N4SS, title={N=4 superconformal symmetry for the covariant quantum superstring [rapid communication]}, author={Pietro Antonio Grassi and Peter van Nieuwenhuizen}, journal={Physics Letters B}, year={2005} }

## 6 Citations

### Origin of pure spinor superstring

- Physics
- 2005

The pure spinor formalism for the superstring, initiated by N. Berkovits, is derived at the fully quantum level starting from a fundamental reparametrization invariant and super-Poincare invariant…

### On D-brane boundary state analysis in pure spinor formalism

- Physics
- 2006

We explore a particular approach to study D-brane boundary states in Berkovits' pure spinor formalism of superstring theories. In this approach one constructs the boundary states in the relevant…

### On the classical dynamics of a pure spinor string on an AdS5×S5 background

- Physics, Mathematics
- 2006

We will discuss some properties of the pure spinor string on an AdS5×S5 background. Using a classical Hamiltonian analysis we will show that the vertex operator for the massless state that is in the…

### Non-BPS D-branes in light-cone Green-Schwarz formalism

- Computer Science
- 2005

A special ``doubling trick'' suitable to handle such boundary conditions is designed and rules for computing all possible correlation functions without boundary insertions are prescribed.

### Note about redefinition of the BRST operator for pure spinor string in a general background

- Physics
- 2008

We discuss an analysis presented by Berkovits in Ref 1 in the context of classical mechanics and perform its extension to the case of pure spinor string in a general background.

## References

SHOWING 1-10 OF 40 REFERENCES

### Covariant Quantization of Superstrings Without Pure Spinor Constraints

- Physics
- 2002

We construct a covariant quantum superstring, extending Berkovits' approach by introdu\-cing new ghosts to relax the pure spinor constraints. The central charge of the underlying Kac-Moody algebra,…

### On the Covariant Quantization of Type II Superstrings

- Mathematics
- 2004

In a series of papers Grassi, Policastro, Porrati and van Nieuwenhuizen have introduced a new method to covariantly quantize the GS-superstring by constructing a resolution of the pure spinor…

### Consistency of super-poincaré covariant superstring tree amplitudes

- Physics
- 2000

Using pure spinors, the superstring was recently quantized in a manifestly ten-dimensional super-Poincare covariant manner and a covariant prescription was given for tree-level scattering amplitudes.…

### On the BRST Cohomology of Superstrings with/without Pure Spinors

- Mathematics
- 2002

We replace our earlier condition that physical states of the superstring have non-negative grading by the requirement that they are analytic in a new real commuting constant t which we associate with…

### Vertex operators for closed superstrings

- Mathematics
- 2004

We construct an iterative procedure to compute the vertex operators of the closed superstring in the covariant formalism given a solution of IIA/IIB supergravity. The manifest supersymmetry allows us…

### Massive Superstring Vertex Operator in D = 10 Superspace

- Physics
- 2002

Using the pure spinor formalism for the superstring, the vertex operator for the first massive states of the open superstring is constructed in a manifestly super-Poincare covariant manner. This…

### Ghost constraints and the covariant quantization of the superparticle in ten dimensions

- Physics
- 2004

We present a modification of the Berkovits superparticle. This is firstly in order to covariantly quantize the pure spinor ghosts, and secondly to covariantly calculate matrix elements of a generic…