Results 81 to 90 of about 5,118 (111)

Towards massive field-theory amplitudes from the cohomology of pure spinor superspace

Journal of High Energy Physics
By analogy with the formula for the massless string disk amplitudes, we define massive field-theory tree amplitudes and conjecture that the BRST cohomology structure of pure spinor superspace fixes their form. We give evidence by deriving the pure spinor
Carlos R. Mafra
doaj   +1 more source

Fermionic one-loop amplitudes of the RNS superstring

Journal of High Energy Physics, 2018
We investigate massless n-point one-loop amplitudes of the open RNS superstring with two external fermions and determine their worldsheet integrands.
Seungjin Lee, Oliver Schlotterer
doaj   +1 more source

State counting on fibered CY 3-folds and the non-Abelian weak gravity conjecture

Journal of High Energy Physics, 2021
We extend the dictionary between the BPS spectrum of Heterotic strings and the one of F-/M-theory compactifications on K3 fibered Calabi-Yau 3-folds to cases with higher rank non-Abelian gauge groups and in particular to dual pairs between Heterotic CHL ...
Cesar Fierro Cota, Albrecht Klemm, Thorsten Schimannek   +2 more
doaj   +1 more source

Twistor--like Formulation of the Supermembrane in D=11 $^*$

, 1993
We propose a new formulation of the D=11 supermembrane theory that involves commuting spinors (twistor--like variables) and exhibits a manifest $n$--extended world volume supersymmetry $(1\leq n\leq 8)$.
Achúcarro, Aoyama, Bandos, Bandos, Bengtsson, Bengtsson, Bergshoeff, Bergshoeff, Bergshoeff, Berkovits, Berkovits, Berkovits, Berkovits, Berkovits, Berkovits, Bonora, Bonora, Bonora, Chikalov, de Azcarraga, Delduc, Delduc, Delduc, Delduc, Delduc, Duff, Duff, Eisemberg, Eisenberg, Farlie, Ferber, Galperin, Galperin, Gauntlett, Howe, Ivanov, M. Tonin, P. Pasti, Paccanoni, Pashnev, Plyushchay, Shirafuji, Soroka, Sorokin, Sorokin, Sorokin, Tonin, Tonin, Townsend, Townsend, Volkov, Volkov, Witten   +52 more
core   +1 more source

The Bosonic Ancestor of Closed and Open Fermionic Strings [PDF]

, 2002
We review the emergence of the ten-dimensional fermionic closed string theories from subspaces of the Hilbert space of the 26-dimensional bosonic closed string theory compactified on an $E_8\times SO(16)$ lattice.
Englert, Francois, Houart, Laurent, Taormina, Anne   +2 more
core   +1 more source

Completing R 4 using O(d, d)

Journal of High Energy Physics, 2022
The tree-level string effective action is known to contain quartic Riemann terms with coefficient ζ(3)α′3. In the case of the type II string this is the first α′ correction.
Linus Wulff
doaj   +1 more source

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
Thales Azevedo, Renann Lipinski Jusinskas   +1 more
doaj   +1 more source

Heterotic instantons for monad and extension bundles

Journal of High Energy Physics, 2020
We consider non-perturbative superpotentials from world-sheet instantons wrapped on holomorphic genus zero curves in heterotic string theory. These superpotential contributions feature prominently in moduli stabilization and large field axion inflation ...
Evgeny I. Buchbinder, Andre Lukas, Burt A. Ovrut, Fabian Ruehle   +3 more
doaj   +1 more source

Recent developments in non-perturbative quantum field theory [PDF]

, 1996
We report on recent advances in the understanding of non-perturbative phenomena in the quantum theory of fields and strings.Comment: 6 pages, latex, uses stwol.sty; Plenary talk given at International Conference on High Energy Physics (ICHEP), Warsaw ...
Ferrara, Sergio
core   +1 more source

Introduction to the special issue dedicated to Michael J. Duff FRS on the occasion of his 70th birthday. [PDF]

Proc Math Phys Eng Sci, 2022
Borsten L, Marrani A, Pope CN, Stelle K.
europepmc   +1 more source