The Internet Archive has a preservation copy of this work in our general collections.
The file type is
We review the recent studies of tachyon condensation in string field theory. After introducing the open string field theory both for bosonic string and for superstring, we use them to examine the conjecture that the unstable configurations of the D-brane will decay into the 'closed string vacuum' through the tachyon condensation. And we describe the attemps to construct a lower dimensional bosonic D-brane as an unstable lump solution of the string field equation. We obtain exact results fromarXiv:hep-th/0102085v4 fatcat:azjbkloe4ngdvkijgox4ybabpy