Instanton: Difference between revisions

39 bytes added ,  12 years ago
instanton fluid
m (add wikilink)
(instanton fluid)
Instanton effects are important in understanding the formation of condensates in the vacuum of [[quantum chromodynamics]] (QCD) and in explaining the mass of the so-called 'eta-prime particle', a Goldstone-boson which has acquired mass through the axial current [[anomaly]] of QCD. Note that there is sometimes also a corresponding [[soliton]] in a theory with one additional space dimension. Recent research on '''instantons''' links them to topics such as [[D-branes]] and [[Black holes]] and, of course, the vacuum structure of QCD. For example, in oriented [[string theory|string theories]], a Dp brane is a gauge theory instanton in the world volume (p+5)-dimensional U(N) gauge theory on a stack of N
D(p+4)-branes.
 
== See also ==
 
* [[instanton fluid]]
 
==References==