Chennai Mathematical Institute


Recent progress in the construction of effective string theories
N.D. Hari Dass
DAE Raja Ramanna Fellow, Indian Institute of Science, Bangalore.


After our high accuracy numerical simulations showed that upto R-3 (R is the inter-quark separation) the static potential in three and four-dimensional QCD is the same as in bosonic string theory(Nambu-Goto theory), we have made considerable progress in the analytical understanding of the quantum mechanics of string-like objects.

Based on the Polchinski-Strominger effective string formalism, we have proved the above result analytically. We have made progress understanding the classical vs quantum equivalence of effective string theories. We have most recently developed a covariant calculus or a systematic construction of effective string theories to arbitrary orders.

In this talk I shall be presenting the technical details of these developments.