ELFT HÍRADÓ

[Janos Asboth <asboth AT phy.bme.hu>]

Meghívó

BME Elméleti Fizika Szeminárium,

mércius 5. péntek 10h15,
online a Microsoft Teams-ben
<https://teams.microsoft.com/l/meetup-join/19%3a35c712c192104aa998ed6bab3f0cbc07%40thread.tacv2/1614850607723?context=%7b%22Tid%22%3a%226a3548ab-7570-4271-91a8-58da00697029%22%2c%22Oid%22%3a%22c7eaf7d2-684b-4597-b217-6a9121400219%22%7d>
Boldis Bercel (BME fizika BSc hallgató):
Scanning spacetime with patterns of entanglement

Recently interesting new approaches have appeared dealing with the
challenge of representing
inherently quantum phenomena in a classical geometric manner. In particular
a connection has been established between the properties of geodesics of an
asymptotically anti de-Sitter (AdS) space and the quantum information
theoretic quantities of certain regions in a two dimensional Conformal
Field Theory (CFT) living on its boundary.
In my presentation I review the static case of the AdS3/CFT2
correspondence. I establish a connection between the geodesics of pure AdS3
space and the boundary quantities characterizing entanglement patterns of
the CFT vacuum. I also introduce the space of geodesics, the so-called
kinematic space, and explain how the entropic quantities are realized
there. Especially working with geodesic N-gons I show that the mutations of
their triangulations give rise to a cluster algebraic structure of these
polygons [1]. It turns out that this structure can be illustrated as a walk
of N-3 particles in the kinematic space.
Finally using the ABHY construction, featuring Dynkin diagrams, I describe
and visualize this walk [2].

[1] P. Lévay, B. Boldis, Scanning-Spacetime with patterns of entanglement,
Physical Review D101,
066021 (2020)
[2] B. Boldis, Entanglement patterns realized as walks in kinematic space,
Student Research Societies
(TDK) (2020).

Minden érdeklődőt szeretettel várunk.

Asbóth János
szemináriumi koordinátor