We study T-branes on compact Kahler surfaces, in the presence of fields localised at curves. If such fields are treated as defects, their vevs induce delta-function sources for the 7-brane background, possibly leading to profiles with poles. We find that the presence of defect sources relaxes the constraints on globally well-defined T-brane configurations, avoiding the obstruction to building them on surfaces of positive curvature. Profiles with poles can be understood, from a 4d viewpoint, as non-trivial vevs for massive modes induced by the defects, and come with their own set of constraints. In the special case of fields localised on a self-intersection curve, we show how to retrieve the Hitchin system with defects from an ordinary global one with enhanced symmetry.

Marchesano, F., Savelli, R., Schwieger, S. (2019). T-branes and defects. JOURNAL OF HIGH ENERGY PHYSICS, 2019(4) [10.1007/JHEP04(2019)110].

T-branes and defects

Savelli R.;
2019-01-01

Abstract

We study T-branes on compact Kahler surfaces, in the presence of fields localised at curves. If such fields are treated as defects, their vevs induce delta-function sources for the 7-brane background, possibly leading to profiles with poles. We find that the presence of defect sources relaxes the constraints on globally well-defined T-brane configurations, avoiding the obstruction to building them on surfaces of positive curvature. Profiles with poles can be understood, from a 4d viewpoint, as non-trivial vevs for massive modes induced by the defects, and come with their own set of constraints. In the special case of fields localised on a self-intersection curve, we show how to retrieve the Hitchin system with defects from an ordinary global one with enhanced symmetry.
2019
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/02 - FISICA TEORICA, MODELLI E METODI MATEMATICI
English
D-branes; Supersymmetric Gauge Theory; Differential and Algebraic Geometry; Superstring Vacua
Marchesano, F., Savelli, R., Schwieger, S. (2019). T-branes and defects. JOURNAL OF HIGH ENERGY PHYSICS, 2019(4) [10.1007/JHEP04(2019)110].
Marchesano, F; Savelli, R; Schwieger, S
Articolo su rivista
File in questo prodotto:
File Dimensione Formato  
scoap3-fulltext (8).pdf

accesso aperto

Tipologia: Versione Editoriale (PDF)
Licenza: Creative commons
Dimensione 731.55 kB
Formato Adobe PDF
731.55 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/227069
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 9
  • ???jsp.display-item.citation.isi??? 9
social impact