Triangle Seminars
Tuesday, 16 Nov 2010
Brauer trees for finite reductive groups
Olivier Dudas
(Oxford University)
Abstract:
Some aspects of the modular representation theory of a finite group can be
described by a tree. Such trees have been determined for almost all finite
simple groups, but some cases remain unknown. Starting from the example of
the group SL2(q) I will explain how geometric methods can be used to solve
this problem for finite reductive groups.
Some aspects of the modular representation theory of a finite group can be
described by a tree. Such trees have been determined for almost all finite
simple groups, but some cases remain unknown. Starting from the example of
the group SL2(q) I will explain how geometric methods can be used to solve
this problem for finite reductive groups.
Posted by: KCL
Wednesday, 17 Nov 2010
Hilbert Series: Two Applications
Amihay Hanany
(Imperial College)
Abstract:
This talk will cover two different applications in the study of Hilbert Series. One is in the text book problem of the massive spectrum of the perturbative string in 10 dimensions. We will write the well known partition function in a new form which is covariant under the little group for massive representations. A second application is in the study of flavor invariants in the standard model. We will compute and count all possible invariants which can be constructed from various mass matrices. These two applications are examples of a larger program in which one can use Hilbert series for a collection of problems in physics.
..
(Room EB1 is on the lower ground floor of the Queens' building, which is just in front of the Physics building. It's signed as number 16 on the map
http://www.qmul.ac.uk/docs/about/26065.pdf
The most convenient entrance is on the east side (again just in front of the Physics building): you go down the stairs to the LG floor and then the room is on your right.)
This talk will cover two different applications in the study of Hilbert Series. One is in the text book problem of the massive spectrum of the perturbative string in 10 dimensions. We will write the well known partition function in a new form which is covariant under the little group for massive representations. A second application is in the study of flavor invariants in the standard model. We will compute and count all possible invariants which can be constructed from various mass matrices. These two applications are examples of a larger program in which one can use Hilbert series for a collection of problems in physics.
..
(Room EB1 is on the lower ground floor of the Queens' building, which is just in front of the Physics building. It's signed as number 16 on the map
http://www.qmul.ac.uk/docs/about/26065.pdf
The most convenient entrance is on the east side (again just in front of the Physics building): you go down the stairs to the LG floor and then the room is on your right.)
Posted by: IC
Searching for supersymmetry and strings and the LHC
John Ellis
(CERN/KCL)