%0 Journal Article %1 UlfG2010Extraction %A Ulf-G, %A Polejaeva, Kathryn %A Rusetsky, Akaki %D 2010 %J Nuclear Physics B %K resonance, tetraquark %N 1 %P 1--20 %R 10.1016/j.nuclphysb.2010.12.011 %T Extraction of the resonance parameters at finite times %U http://dx.doi.org/10.1016/j.nuclphysb.2010.12.011 %V 846 %X In this paper we propose a model-independent method to extract the resonance parameters on the lattice directly from the Euclidean 2-point correlation functions of the field operators at finite times. The method is tested in case of the two-point function of the Delta-resonance, calculated at one loop in Small Scale Expansion. Further, the method is applied to a 1+1-dimensional model with two coupled Ising spins and the results are compared with earlier ones obtained by using Luescher's approach.

@article{UlfG2010Extraction, abstract = {{In this paper we propose a model-independent method to extract the resonance parameters on the lattice directly from the Euclidean 2-point correlation functions of the field operators at finite times. The method is tested in case of the two-point function of the Delta-resonance, calculated at one loop in Small Scale Expansion. Further, the method is applied to a 1+1-dimensional model with two coupled Ising spins and the results are compared with earlier ones obtained by using Luescher's approach.}}, added-at = {2019-02-23T22:09:48.000+0100}, archiveprefix = {arXiv}, author = {Ulf-G and Polejaeva, Kathryn and Rusetsky, Akaki}, biburl = {https://www.bibsonomy.org/bibtex/26064c68414bc64509ecbfd00e65c715d/cmcneile}, citeulike-article-id = {8612994}, citeulike-linkout-0 = {http://arxiv.org/abs/1007.0860}, citeulike-linkout-1 = {http://arxiv.org/pdf/1007.0860}, citeulike-linkout-2 = {http://dx.doi.org/10.1016/j.nuclphysb.2010.12.011}, day = 6, doi = {10.1016/j.nuclphysb.2010.12.011}, eprint = {1007.0860}, interhash = {bb6a6af77e3bc14ee84e1c0a2867c4f9}, intrahash = {6064c68414bc64509ecbfd00e65c715d}, issn = {05503213}, journal = {Nuclear Physics B}, keywords = {resonance, tetraquark}, month = jul, number = 1, pages = {1--20}, posted-at = {2014-08-19 15:48:11}, priority = {2}, timestamp = {2019-02-23T22:15:27.000+0100}, title = {{Extraction of the resonance parameters at finite times}}, url = {http://dx.doi.org/10.1016/j.nuclphysb.2010.12.011}, volume = 846, year = 2010 }