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UID:2176@qft.physik.hu-berlin.de
DTSTART;TZID=Europe/Berlin:20241101T133000
DTEND;TZID=Europe/Berlin:20241101T143000
DTSTAMP:20241030T100157Z
URL:https://qft.physik.hu-berlin.de/next-seminars/georgios-itsios-hu-berli
 n-2/
SUMMARY:Georgios Itsios (HU Berlin) - 
DESCRIPTION:Speaker: Georgios Itsios\n\nTitle: Integrable deformations of 
 non-linear σ-models and their supergravity realisations\n\nAbstract:\nIn 
 this talk\, I will discuss my recent contributions to integrable deformati
 ons of two-dimensional non-linear σ-models and their relation to supergra
 vity in ten dimensions. In particular\, I will describe the construction o
 f two supersymmetric solutions of type-II supergravity based on the λ-def
 ormed σ-models for SL(2\,R) and SU(2). In the absence of deformation\, th
 ese solutions describe near-horizon limits of NS1 and NS5 brane intersecti
 ons and both are 1/2-supersymmetric. When the deformation is turned on\, s
 upersymmetry breaks by half and both backgrounds preserve 8 supercharges. 
 Toward the end of the talk\,  I will focus on a variation of the λ-model
  which was proposed recently. This relies on the deformation of only a sub
 group H of the full symmetry group G. The requirement of Lax integrability
  imposes that the coset G/H must be symmetric.
CATEGORIES:Pizza Seminars
LOCATION:Room 1.221\, IRIS building\, Zum großen Windkanal 6\, Berlin\, 12
 489\, Germany
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Zum großen Windkanal 6\, B
 erlin\, 12489\, Germany;X-APPLE-RADIUS=100;X-TITLE=Room 1.221\, IRIS build
 ing:geo:0,0
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