Chennai Mathematical Institute


3.30 p.m.
Some surprises from particle physics

N.D. Hari Dass
Chennai Mathematical Institute.


In this talk, aimed primarily at students(maths, comp.sci and physics) and those not working in physics, I shall explain the conceptual framework necessary to appreciate one of the biggest surprises in particle physics, namely, maximal violation of left-right symmetry (also called parity violation). I will explain the great importance of these for the construction of the so called 'Standard Model'.

I will also explain the follow-up surprises of other similar violations like violation of matter-antimatter symmetry, of time reversal symmetry etc. and their significance for our present understanding of our universe. I shall briefly describe my own proposals for testing such possibilities in gravitation and the results of some recent experimental works. I shall conclude with a few remarks on these issues in broader frameworks like string theory.

The presentation will be pedagogical.