Non-Abelian Strings: From Weak to Strong Coupling and Back via Duality Export

@article{citeulike:5969017, abstract = {The crossover transition from weak coupling at large \xi to strong coupling at small \xi is studied in N=2 supersymmetric gauge theory with the U(N) gauge group and N\_f\>N (here \xi is the Fayet--Iliopoulos parameter). We find that at strong coupling a dual non-Abelian weakly coupled N=2 theory exists which describes low-energy physics at small \xi. The dual gauge group is U(N\_f-N). The dual theory has N\_f flavors of light dyons, to be compared with N\_f quarks in the original U(N) theory. Both theories support non-Abelian strings. In each of these two regimes there are two varieties of physical excitations: elementary fields and nonperturbative composite states bound by confining strings. These varieties interchange upon transition from one regime to the other. We conjecture that the composite stringy states can be related to Seiberg's M fields.}, archivePrefix = {arXiv}, author = {Shifman, M. and Yung, A.}, citeulike-article-id = {5969017}, citeulike-linkout-0 = {http://arxiv.org/abs/0910.3007}, citeulike-linkout-1 = {http://arxiv.org/pdf/0910.3007}, day = {15}, eprint = {0910.3007}, keywords = {non-abelian\_strings, weak-string\_duality}, month = {Oct}, posted-at = {2009-10-19 05:34:43}, priority = {2}, title = {Non-Abelian Strings: From Weak to Strong Coupling and Back via Duality}, url = {http://arxiv.org/abs/0910.3007}, year = {2009} }

TY - JOUR ID - citeulike:5969017 L3 - citeulike-article-id:5969017 N2 - The crossover transition from weak coupling at large \xi to strong coupling at small \xi is studied in N=2 supersymmetric gauge theory with the U(N) gauge group and N_f>N (here \xi is the Fayet--Iliopoulos parameter). We find that at strong coupling a dual non-Abelian weakly coupled N=2 theory exists which describes low-energy physics at small \xi. The dual gauge group is U(N_f-N). The dual theory has N_f flavors of light dyons, to be compared with N_f quarks in the original U(N) theory. Both theories support non-Abelian strings. In each of these two regimes there are two varieties of physical excitations: elementary fields and nonperturbative composite states bound by confining strings. These varieties interchange upon transition from one regime to the other. We conjecture that the composite stringy states can be related to Seiberg's M fields. TI - Non-Abelian Strings: From Weak to Strong Coupling and Back via Duality KW - non-abelian_strings KW - weak-string_duality AU - Shifman, M AU - Yung, A PY - 2009/Oct/15/ UR - http://arxiv.org/abs/0910.3007 ER -