Results 1 to 10 of about 502 (80)

New BPS states from bosonic/heterotic duality

Journal of High Energy Physics
In this paper, we consider the recently proposed bosonic/heterotic duality that relates the heterotic superstrings to the noncritical bosonic string. Although the latter is nonsupersymmetric, it can be viewed as pseudo-supersymmetric in that the theory ...
H Lu, Ma Liang
exaly   +2 more sources

Connecting the ambitwistor and the sectorized heterotic strings

Journal of High Energy Physics, 2017
The sectorized description of the (chiral) heterotic string using pure spinors has been misleadingly viewed as an infinite tension string. One evidence for this fact comes from the tree level 3-point graviton amplitude, which we show to contain the usual
Renann Lipinski Jusinskas, Jusinskas Renann Lipinski   +1 more
exaly   +3 more sources

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
doaj   +1 more source

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
doaj   +1 more source

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
doaj   +1 more source

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
doaj   +1 more source

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
doaj   +1 more source

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
doaj   +1 more source

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
doaj   +1 more source

Three-loop β-functions for the superstring and heterotic string

Nuclear Physics B, 1988
Abstract The β-function for the (1,1) superstring is calculated explicitly up to three loops, using two different choices of the fermion quantum field. In both cases the bosonic contribution is exactly cancelled by the fermionic contribution. The calculation is repeated for the heterotic string and the non-vanishing β-function is shown to be ...
A.P. Foakes, N. Mohammedi, D.A. Ross
openaire   +1 more source