%0 Journal Article %1 Blatter:1995ik %A Blatter, Marc %A Burkhalter, Rudolf %A Hasenfratz, Peter %A Niedermayer, Ferenc %D 1996 %J Phys. Rev. %K Instantons Lattice O3 PerfectAction SigmaModel %P 923-932 %R 10.1103/PhysRevD.53.923 %T Instantons and the fixed point topological charge in the two-dimensional O(3) sigma model %U http://www.slac.stanford.edu/spires/find/hep/www?eprint=hep-lat/9508028 %V D53 %X Abstract: We define a fixed point topological charge for the two-dimensional O(3) lattice sigma-model which is free of topological defects. We use this operator in combination with the fixed point action to measure the topological susceptibility for a wide range of correlation lengths. The results strongly suggest that it is not a physical quantity in this model. The procedure, however, can be applied to other asymptotically free theories as well.

@article{Blatter:1995ik, abstract = { Abstract: We define a fixed point topological charge for the two-dimensional O(3) lattice sigma-model which is free of topological defects. We use this operator in combination with the fixed point action to measure the topological susceptibility for a wide range of correlation lengths. The results strongly suggest that it is not a physical quantity in this model. The procedure, however, can be applied to other asymptotically free theories as well. }, added-at = {2009-03-05T18:32:17.000+0100}, archiveprefix = {arXiv}, author = {Blatter, Marc and Burkhalter, Rudolf and Hasenfratz, Peter and Niedermayer, Ferenc}, biburl = {https://www.bibsonomy.org/bibtex/296947d10b1912fd77f91579fcd88ee21/gber}, description = {SPIRES-HEP: FIND EPRINT HEP-LAT/9508028}, doi = {10.1103/PhysRevD.53.923}, eprint = {hep-lat/9508028}, interhash = {81c4c000c701bc01bc1c05d972cb7dc8}, intrahash = {96947d10b1912fd77f91579fcd88ee21}, journal = {Phys. Rev.}, keywords = {Instantons Lattice O3 PerfectAction SigmaModel}, pages = {923-932}, slaccitation = {%%CITATION = HEP-LAT/9508028;%%}, timestamp = {2009-03-11T17:32:52.000+0100}, title = {{Instantons and the fixed point topological charge in the two-dimensional O(3) sigma model}}, url = {http://www.slac.stanford.edu/spires/find/hep/www?eprint=hep-lat/9508028}, volume = {D53}, year = 1996 }