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Séminaires à venir dans la série RENC-THEO
[ vue agenda ]

Jeudi 3 Décembre 2020, 15:00 à IHP, Zoom
( The zoom link will be posted here one hour before the talk. )
RENC-THEO (Rencontres Théoriciennes) hep-th
Justin Kaidi ( Simons Center for Geometry snd Physics ) Adventures in Non-Supersymmetric String Theory
Abstract: It has long been known that there exist strings with supersymmetry on the world sheet, but not in spacetime. These include the well-known Type 0 strings, as well as a series of seven heterotic strings, all of which are obtained by imposing unconventional GSO projections. Besides these classic examples though, relatively little is known about the full space of non-SUSY theories. One of the reasons why non-SUSY strings have remained understudied is the fact that nearly all of them have closed string tachyons, and hence do not admit ten-dimensional flat space as a stable vacuum. The goal of this talk is two-fold. First, using recent advances in condensed matter theory, we will reinterpret GSO projections in terms of topological phases of matter, thereby providing a framework for the classification of non-SUSY strings. Having done so, we will show that for all non-SUSY theories in which a tachyon exists, it can be condensed to give a stable lower-dimensional vacuum. In many cases, these stable vacua will be two-dimensional string theories already known in the literature.

Jeudi 21 Janvier 2021, 11:00 à IHP, (video) RENC-THEO (Rencontres Théoriciennes) hep-th
Rajesh Gopakumar ( ICTS Bangalore ) TBA

Jeudi 28 Janvier 2021, 11:00 à IHP, (video) RENC-THEO (Rencontres Théoriciennes) hep-th
Eric Perlmutter ( Caltech & IPhT ) TBA

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