Results 1 to 10 of about 618 (129)

Green-Schwarz and pure spinor formulations of chiral strings

Journal of High Energy Physics, 2021
Bosonic and RNS chiral strings have been defined from a singular gauge fixing of the respective Polyakov and spinning string actions, enforcing, among other things, the finite nature of their physical spectra.
Max Guillen
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A New Approach to String Theory

Universe, 2023
In the present paper, we consider quantum theories obtained through the quantization of classical theories with first-class constraints assuming that these constraints form a Lie algebra.
Albert Schwarz
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D=5 holomorphic Chern-Simons and the pure spinor superstring

Journal of High Energy Physics, 2023
The physical states of D=5 holomorphic Chern-Simons theory correspond to on-shell D=10 open superstring states in the cohomology of q +, where q + is one of the 16 spacetime supersymmetry generators.
Nathan Berkovits
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Refined topological amplitudes from the Ω-background in string theory

Journal of High Energy Physics, 2022
It was recently shown that the N $$ \mathcal{N} $$ = 2 string topological amplitudes in the heterotic weak coupling limit generate a six-dimensional Melvin space, providing a description of the Ω-background in string theory, where string propagation can ...
Carlo Angelantonj, Ignatios Antoniadis, Ioannis Florakis, Hongliang Jiang   +3 more
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Normal form of nilpotent vector field near the tip of the pure spinor cone

Journal of High Energy Physics, 2021
Pure spinor formalism implies that supergravity equations in space-time are equivalent to the requirement that the worldsheet sigma-model satisfies certain properties.
Andrei Mikhailov, Dennis Zavaleta
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Manifest spacetime supersymmetry and the superstring

Journal of High Energy Physics, 2021
The algebra of spacetime supersymmetry generators in the RNS formalism for the superstring closes only up to a picture-changing operation. After adding non-minimal variables and working in the “large” Hilbert space, the algebra closes without picture ...
Nathan Berkovits
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Pinching parameters for open (super) strings

Journal of High Energy Physics, 2018
We present an approach to the parametrization of (super) Schottky space obtained by sewing together three-punctured discs with strips. Different cubic ribbon graphs classify distinct sets of pinching parameters; we show how they are mapped onto each ...
Sam Playle, Stefano Sciuto
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Two-point string amplitudes

Journal of High Energy Physics, 2019
We show that the two-point tree level amplitude in string theory in flat space is given by the standard free particle expression.
Harold Erbin, Juan Maldacena, Dimitri Skliros   +2 more
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Noncommutativity and nonassociativity of type II superstring with coordinate dependent RR field — the general case

Journal of High Energy Physics, 2022
In this paper we consider non-commutativity that arises from T-duality of bosonic coordinates of type II superstring in presence of coordinate dependent Ramond-Ramond field. Action with such choice of the background fields is not translational invariant.
D. Obrić, B. Nikolić
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Topological amplitude computations using the pure spinor formalism

Journal of High Energy Physics, 2019
After constructing a simplified four-dimensional version of the b ghost, topological multiloop amplitudes in type II superstring theory compactified on a six-dimensional orbifold are computed using the non-minimal pure spinor formalism. These pure spinor
Nathan Berkovits, Luis Alberto Ypanaqué
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