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Master symmetry in the AdS 5 × S 5 pure spinor string

We lift the set of classical non-local symmetries recently studied by Klose, Loebbert, and Münkler in the context of ℤ 2 cosets to the pure spinor description of the superstring in the AdS 5 × S 5 background.

Worldsheet dilatation operator for the AdS superstring

In this work we propose a systematic way to compute the logarithmic divergences of composite operators in the pure spinor description of the AdS 5 × S 5 superstring. The computations of these divergences can be summarized in terms of a dilatation operator acting on the local operators. We check our results with some important composite operators of the formalism.

Ambitwistor pure spinor string in a type II supergravity background

We construct the ambitwistor pure spinor string in a general type II supergravity background in the semi-classical regime. Almost all supergravity constraints are obtained from nilpotency of the BRST charge and further consistency conditions from additional world-sheet the case of AdS5 × S 5 background.

Non-minimal fields of the pure spinor string in general curved backgrounds

We study the coupling of the non-minimal ghost fields of the pure spinor superstring in general curved backgrounds. The coupling is found solving the consistency relations from the nilpotency of the non-minimal BRST charge.

AdS pure spinor superstring in constant backgrounds

Osvaldo Chandia 2 L. Ibiapina Bevilaqua 0 Brenno Carlini Vallilo 1 Open Access c The Authors. Article funded by SCOAP 0 Escola de Ciencias e Tecnologia, Universidade Federal do Rio Grande do Norte