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UID:1144@qft.physik.hu-berlin.de
DTSTART;TZID=Europe/Berlin:20181121T111500
DTEND;TZID=Europe/Berlin:20181121T121500
DTSTAMP:20181119T223155Z
URL:https://qft.physik.hu-berlin.de/next-seminars/yuta-sekiguchi-physics-u
 niversity-of-bern/
SUMMARY:Yuta Sekiguchi\, Physics\, University of Bern - 
DESCRIPTION:Y. Sekiguchi\, Bern\n\nTitle: "Killing spinors from classical r
 -matrices"\n\nAbstract: The Yang-Baxter (YB) deformation is a systematic 
 way of providing integrable deformations of two-dimensional symmetric non
 -linear sigma models. Such deformations can be labeled by classical r-mat
 rices satisfying the classical YB equation. This YB deformation can also 
 be applied to type IIB superstrings on AdS5xS5\, where a simple class of 
 YB deformation is associated with the TsT transformation of string backg
 rounds. The data of this transformation is encoded in an antisymmetric bi
 -vector \\Theta\, called non-commutativity parameter. In this talk\, afte
 r some brief review of YB deformations\, I will present a simple recipe f
 or explicitly obtaining the Killing spinors in the TsT deformed backgroun
 ds starting from \\Theta by giving various examples. Consequently\, the K
 illing spinors are expressed only by \\Theta and constant with respect to
  the Kosmann Lie derivative. Then I will comment on the recent developmen
 ts focusing on the non-abelian classical r-matrices. This talk is mainly 
 based on 1805.00948 and work in progress.
CATEGORIES:Research Seminars
LOCATION:Room 2'07\, IRIS Building\, Zum großen Windkanal 6\, Berlin\, Ger
 many
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