Dear colleagues and friends,
Please forward to anyone you think might be interested, including students and postdocs.
This is a reminder for today's talk in our seminar series.
Friday 16th April at 16:00 CEST (GMT + 1 or local time in Germany & France); 15:00 UK local time; 10:00am EDT
Speaker: Sybille Driezen (Santiago de Compostela University)
Title: Supergravity solution-generating techniques and canonical transformations of σ-models from O(D,D)
Abstract: In this talk I will discuss solution-generating techniques of supergravity and canonical transformations of σ-models using the framework of the flux formulation of Double Field Theory (DFT). Given that the DFT equations of motion as well as the Poisson brackets of two-dimensional sigma models can be written in terms of the so-called generalised fluxes, I will discuss within certain assumptions a classification of transformations which leave these fluxes invariant but transform the background non-trivially. We will assume a generalised Scherk-Schwarz ansatz for the generalised vielbein, such that it takes a twisted form, and that the twist gives rise to constant generalised fluxes on the strong constraint. Furthermore the twist is required to take a particular form when the H-flux is non-vanishing. The classification of maps thus obtained include the known abelian/non-abelian/Poisson-Lie T-duality transformations, Yang-Baxter deformations, as well as novel generalisations of them. This talk is based on https://arxiv.org/abs/2102.04498.The seminar will take place on Zoom
Zoom Meeting ID 927-576-096
Password 008501
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https://mpi-aei.zoom.us/j/927576096?pwd=L1JoOUN5SmNvRjg4S0V2NlpIWld0Zz09
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Details of all upcoming seminars can be found on Google Calendar https://calendar.google.com/calendar/embed?src=exft.seminars%40gmail.com.
Recordings of previous talks can be found at https://sites.google.com/view/egseminars/.
Best wishes,
Franz Ciceri, Gianluca Inverso, Emanuel Malek, Charles Strickland-Constable, Dan Thompson-- Dr. Emanuel Malek Junior Research Group Leader Humboldt-Universität zu Berlin, Institute of Physics, Zum Großen Windkanal 6, 12489 Berlin, Germany Email: emanuel.malek@physik.hu-berlin.de Website: http://hu-berlin.de/stringfluxvacua