Generalized ADHM equations from marginal deformations in open superstring field theory

0522479 - FZÚ 2020 RIV US eng J - Journal Article
Vošmera, Jakub
Generalized ADHM equations from marginal deformations in open superstring field theory.
Journal of High Energy Physics. Roč. 2019, č. 12 (2019), s. 1-61, č. článku 118. ISSN 1029-8479. E-ISSN 1029-8479
R&D Projects: GA ČR GA17-22899S
Institutional support: RVO:68378271
Keywords : String Field Theory * D-branes * solitons monopoles and instantons
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 5.875, year: 2019
Method of publishing: Open access

Working within the framework of both the A∞ and the Berkovits open superstring field theory, we derive a necessary and sufficient condition for a Neveu-Schwarz marginal deformation to be exact up to third order in the deformation parameter. For a specific class of backgrounds, we find that this condition localizes on the boundary of the worldsheet moduli space, thus providing a very simple computational prescription for recovering algebraic constraints (generalized ADHM equations) which need to be satisfied by the moduli. Applying our results to the D(−1)/D3 system, we confirm up to third order that blowing up the size of the D-instanton inside the D3 brane worldvolume is an exact modulus of the full string theory. We also discuss examples of more complicated back- grounds, such as instantons on unresolved ALE spaces, as well as the spiked instantons.
Permanent Link: http://hdl.handle.net/11104/0306962