On the mass of the world-sheet `axion' in SU(N) gauge theories in 3+1 dimensions
There is numerical evidence that the world sheet action of the confining flux tube in D =3 +1SU(N)gauge theories contains a massive excitation with 0−quantum numbers whose mass shows some decrease as one goes from SU(3)to SU(5). Moreover it has been shown that the natural coupling of this pseudoscal...
| Main Authors: | , |
|---|---|
| Format: | Journal article |
| Published: |
Elsevier
2017
|