December 15, 1995 Dear Colleagues, The Institute for Advanced Study will have a special program during the academic year 1996-97 on quantum field theory, directed by P. Deligne, D. Kazhdan and E. Witten. It will be sponsored jointly by the School of Mathematics and the School of Natural Sciences. The goal is to create and convey an understanding, in terms congenial to mathematicians, of some fundamental notions of physics, such as quantum field theory, supersymmetry and string theory. The emphasis will be on developing the intuition stemming from functional integrals. One way to define the goals of the program is by negation, excluding certain important subjects commonly pursued by mathematicians whose work is motivated by physics. In this spirit, it is not planned to treat except periferally the magnificent new applications of field theory, such as Seiberg-Witten equations to Donaldson theory. Nor is the plan to consider fundamental new constructions within mathematics that were inspired by physics, such as quantum groups or vertex operator algebras. Nor is the aim to discuss how to provide mathematical rigor for physical theories. Rather, the goal is to develop the sort of intuition common among physicists for those who are used to thought processes stemming from geometry and algebra. During the year there will be several series of lectures, including: Quantum field theory including Yang-Mills theory and renormalization, by L. Faddeev Conformal field theories from the point of view of functional integrals, by K. Gawedzki Super-symmetry, by D. Kazhdan String theory leading to Yang-Mills theory and super-symmetry, by E. D'Hoker S-duality, by E. Witten. The Institute will have funds to support a limited number of mathematicians and physicists at the postdoctoral level. Traditionally our application deadline is December 1. However, we will be considering candidates for this special program until February 1. Application materials may be requested from Mr. Richard Lloyd, School of Mathematics, Institute for Advanced Study, Olden Lane, Princeton, NJ 08540, (609) 734-8112. His e-mail address is: lloyd@math.ias.edu. Also, forms may be accessed via a "gopher" connection to: gopher.math.ias.edu, or via a "web" connection to: http://www.math.ias.edu/. If you know any outstanding recent Ph.D. who might be in a position to benefit from this program, please give them this information and encourage them to apply. It would be helpful to both the applicant and to us to have letters of recommendation which focus on the ability of the applicant to benefit from being at the Institute during this special program. Sincerely, Robert MacPherson