Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2010-10-18
JHEP 1102:040,2011
Physics
High Energy Physics
High Energy Physics - Lattice
20 pages, 7 figures; v2: Style changed to JHEP. Typos corrected and minor changes in the conclusions and the final results. Re
Scientific paper
10.1007/JHEP02(2011)040
We measure the energy levels of the excitations of the flux tube between static quark and antiquark in three-dimensional SU(2) gauge theory. Combining exponential error reduction techniques and a variational method we are able to reduce the errors for the excited states significantly and to extract excited states in distinct parity and charge conjugation channels. It is conjectured that the infrared behavior (at large q\bar{q} separation R) of the flux tube is governed by an effective string theory. Indeed previous simulations show good agreement between lattice data and predictions from Nambu-Goto string theory. Recently, new results on the effective string theory obtained corrections to the Nambu-Goto predictions and showed that for the open string in three dimensions first corrections should appears at order 1/R^4. They correspond to boundary terms in the worldsheet field theory. These corrections are presumably small for the ground state, but significantly larger for the excited states and lift the degeneracies of the free theory. Assuming this functional form of the correction, we obtain for the coefficient b_2=-0.5(2)(2).
No associations
LandOfFree
Probing boundary-corrections to Nambu-Goto open string energy levels in 3d SU(2) gauge theory 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 Probing boundary-corrections to Nambu-Goto open string energy levels in 3d SU(2) gauge theory, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Probing boundary-corrections to Nambu-Goto open string energy levels in 3d SU(2) gauge theory will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-306282