4 papers
GGI Lectures on the Pure Spinor Formalism of the Superstring
Oscar A. Bedoya, Nathan Berkovits
Notes taken by Oscar A. Bedoya of lectures of Nathan Berkovits in June 2009 at the Galileo Galilei Institute School "New Perspectives in String Theory". Topics include the pure spi…
Decoupling of unphysical states in the minimal pure spinor formalism II
Nathan Berkovits, Joost Hoogeveen, Kostas Skenderis
This is the second of a series of two papers where decoupling of unphysical states in the minimal pure spinor formalism is investigated. The multi-loop amplitude prescription for t…
Pure Spinor Vertex Operators in Siegel Gauge and Loop Amplitude Regularization
Yuri Aisaka, Nathan Berkovits
Since the b ghost in the pure spinor formalism is a composite operator depending on non-minimal variables, it is not trivial to impose the Siegel gauge condition b_0 V=0 on BRST-in…
Simplifying and Extending the AdS_5xS^5 Pure Spinor Formalism
Nathan Berkovits
Although the AdS_5xS^5 worldsheet action is not quadratic, some features of the pure spinor formalism are simpler in an AdS_5xS^5 background than in a flat background. The BRST ope…