String Theory Seminar


Thursday, October 2, 2003, 4:00 pm, 277 Phillips Hall, String Theory Seminar at UNC
    Pietro Antonio Grassi (SUNY, Stony Brook)
    Covariant Formulations of Superstring
 

    I review the Green-Schwarz formulation for superstrings. I discuss the
    advatanges of a target space super-Poincare' invariant formulation and
    the problems with light-cone quantization. I will introduce Berkovits'  formulation
    with pure spinors and some applications. Then, I will describe a new  formulation
    without uncostrained fields based on WZW model and  N=2 superconformal  symmetry of
    the model.