СЕМИНАР: Јан Новак

У оквиру семинара Групе за честице и гравитацију Института за физику у Београду, у петак, 29. новембра 2019. у 11 часова, у сали 360, Јан Новак (Технички универзитет у Либерецу, Чешка) одржаће предавање:

Ring paradigm as a new approach to quantum gravity


One of the quickly developing mathematical disciplines is algebraic
geometry. We will study plabic (planar bicolored) graphs. We define
LE-diagrams and decorated permutations and we mention that these three
notions are interconnected. We further introduce winding index and
formal boundary measurements. The Amplituhedron $A_{n,k,m}$ is the image
in the Grassmannian $Gr_{k(k+m)}$ of the totally nonnegative part of
$Gr_{k,n}$ under a linear map. It was introduced in 2013 in order to
give a geometric basis for the computation in physics.

We show a completely different possible usage of plabic graphs in
quantum gravity, which is a work in progress. We will start with
philosophical background. We explain the basic idea in physics and then
we state the basic directions in future research.

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