The strings 2011 conference has opend today in Sweden. You can watch videos of the talks live or recorded straight after, starting with the introduction by David Gross.
Gross asked the usual questions starting with the number one “What is String Theory?” and ending with number 11 “What will we learn from the LHC?”
He is a bit disappointed that the LHC has not found anything surprising yet, but he still holds high hopes for SUSY.
There have been promising new results in trying to solve large-N SUSY gauge theory which has beautiful mathematics: twistors, polytopes in the grasmanian for example. Since this theory is dual to string theory Gross thinks these discoveries could tell us about the fundamentals of string theory.
He goes on to mention entropic gravity which he said was also promising but he had a little smirk on his face when he said it and also implied that it is ambitious. There will be a talk from Verlinde later in the conference.
Apparently it is unfortunate that we seem to live in De Sitter space. The theories work much better in anti- De Sitter space. There are lots of questions but the most important product of knowledge is ignorance, then again it would be nice to have some answers he said at the end.