Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2001-11-16
Physics
High Energy Physics
High Energy Physics - Theory
61 pages (harvmac big), 5 eps figures. v2: references corrected
Scientific paper
We study condensation of closed string tachyons living on defects, such as orbifold fixed planes and Neveu-Schwarz fivebranes. We argue that the high energy density of localized states decreases in the process of condensation of such tachyons. In some cases this means that $c_{eff}$ decreases along the flow; in others, $c_{eff}$ remains constant and the decreasing quantity is a closed string analog, $g_{cl}$, of the ``boundary entropy'' of D-branes. We discuss the non-supersymmetric orbifolds $C/Z_n$ and $C^2/Z_n$. In the first case tachyon condensation decreases $n$ and in some cases connects type II and type 0 vacua. In the second case non-singular orbifolds are related by tachyon condensation to both singular and non-singular ones. We verify that $g_{cl}$ decreases in flows between non-singular orbifolds. The main tools in the analysis are the structure of the chiral ring of the perturbed theory, the geometry of the resolved orbifold singularities, and the throat description of singular conformal field theories.
Harvey Jeffrey A.
Kutasov David
Martinec Emil J.
Moore Gregory
No associations
LandOfFree
Localized Tachyons and RG Flows does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Localized Tachyons and RG Flows, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Localized Tachyons and RG Flows will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-195400