BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Chris Blair (Vrije U. Brussels) DTSTART:20200522T123000Z DTEND:20200522T133000Z DTSTAMP:20260423T021124Z UID:EGSS/4 DESCRIPTION:Title: Non -relativistic duality and TTbar deformations\nby Chris Blair (Vrije U. Brussels) as part of Exceptional geometry seminar series\n\n\nAbstract\nS tarting with some particular physical theory\, we are often interested in then exploring the space of all physical theories either by adding deforma tions or taking limits. I will describe a connection between two seemingly unrelated such explorations. The first is the TTbar deformation of two-di mensional field theories. The second is the non-relativistic limit of stri ng theory. It is well-known that the TTbar deformation of D free bosons le ads to the Nambu-Goto action in D+2 dimensions\; I will explain how the li mit where the deformation parameter returns to zero can be viewed as a non -relativistic limit of the string. In order to describe and generalise thi s correspondence\, I will use intuition gained from the O(D\,D) covariant "doubled" formulation of string theory geometry. This is natural here as T Tbar deformations can be viewed as TsT or bivector transformations\, while non-relativistic limits which are singular in terms of the standard space time geometry become well-defined in terms of doubled variables. Time perm itting I will say something about possible generalisations using exception al geometry.\n\nBased on: https://arxiv.org/abs/2002.12413\n LOCATION:https://researchseminars.org/talk/EGSS/4/ END:VEVENT END:VCALENDAR