Target Space Approach to Closed String Tachyons
Abstract
Description
We use the low energy effective theory of string theory to investigate condensations of closed string tachyons propagating in the bulk. The c-function is related to the total energy of the system via the effective action. A possible modification of the c-theorem is discussed. We also deduce endpoints of the decays by investigating scalar potential of gauged supergravities. A string theory in the flat spacetime would be a possible endpoint.
15 pages, references added, analysis of scalar potential is reconsidered, details of calculations included
15 pages, references added, analysis of scalar potential is reconsidered, details of calculations included