Geometry and Physics Seminar - Tuesday 27 August, at 14:30 (Former Sissa Building), Mauricio Romo

[ICTP Math Section]

GEOMETRY AND PHYSICS SEMINAR @ IGAP


Tuesday 27 August, at 14:30 hrs.


VENUE:  IGAP Seminar room (Former SISSA building, II floor, via Beirut)


Speaker: Mauricio Romo (Tsinghua University)


Title: B-branes and Anomalous Gauged Linear Sigma Models


Abstract: B-branes on Calabi-Yau (CY) X manifolds are in 1-1 
correspondence with objects in the derived category of coherent sheaves. 
B-branes on Gauged Linear Sigma Models (GLSM) can be roughly interpreted 
as objects of the derived category of a CY stack. This interpretation 
can be used to generate equivalences between various categories 
associated to geometric and nongeometric phases of a CY. I will 
introduce these concepts and present some results for the case when the 
stack is not CY (physically, this means the GLSM is anomalous), that can 
be derived from physics. In particular I will explain how the 
equivalences between categories associated to phases are modified and 
comment on some consequence on K-theory using as a guide the example of 
Hirzebruch-Jung resolutions of cyclic surface singularities.

For those who do not have access to the old SISSA building, a group of 
people will meet 5 min before the seminar near the Leonardo bar.


-- 

Koutou Mabilo
ICTP Mathematics Group
Leonardo Da Vinci Building
Strada Costiera no. 11
34151 Trieste, Italy
Tel. no.: +39-040-2240455

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