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SUMMARY:Kentaroh Yoshida (Saitama)
DTSTART:20251029T063000Z
DTEND:20251029T073000Z
DTSTAMP:20260423T011055Z
UID:UIS2025/8
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UIS2025/8/">
 The Courant-Hilbert construction in 4D Chern-Simons theory (Part 2)</a>\nb
 y Kentaroh Yoshida (Saitama) as part of Nagoya IAR workshop on Unification
  of Integrable Systems\n\nLecture held in Sakata-Hirata Hall\, Nagoya Univ
 ersity.\n\nAbstract\nRecently\, the method developed by Courant and Hilber
 t (CH) has been shown to be able to generally describe various integrable 
 deformations of the 2D principal chiral model\, including the TTbar deform
 ation and the root TTbar deformation. We show how this CH method can be de
 scribed in 4D Chern-Simons (4D CS) theory. In particular\, for deformation
 s with a dimensionful parameter such as the TTbar deformation\, a correcti
 on term\, the trace of the energy-momentum tensor\, must be added to the o
 riginal 4D CS theory. This correction term is consistent with the result s
 hown by Sakamoto-Tateo-Yamazaki (2509.12303 [hep-th]) for the TTbar deform
 ation and is generalized by the CH method.\n\nThis talk is based on the co
 llaboration 2509.22080 [hep-th] with Osamu Fukushima (RIKEN iTHEMS) and Ta
 kaki Matsumoto (Seikei University).\n\nIn the first part\, we introduce so
 me basics of the TTbar deformation and the root TTbar deformation\, then w
 e describe the CH construction of integrable deformations of the 2D princi
 pal chiral model.\n\nIn the second part\, we show how this CH method can b
 e described in 4D CS theory.\n
LOCATION:https://researchseminars.org/talk/UIS2025/8/
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