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dc.contributor.authorBennett, Eden_US
dc.contributor.authorHong, Deog Kien_US
dc.contributor.authorLee, Jong-Wanen_US
dc.contributor.authorLin, C-J Daviden_US
dc.contributor.authorLucini, Biagioen_US
dc.contributor.authorMesiti, Micheleen_US
dc.contributor.authorPiai, Maurizioen_US
dc.contributor.authorRantaharju, Jarnoen_US
dc.contributor.authorVadacchino, Davideen_US
dc.date.accessioned2020-07-01T05:21:21Z-
dc.date.available2020-07-01T05:21:21Z-
dc.date.issued2020-04-27en_US
dc.identifier.issn2470-0010en_US
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevD.101.074516en_US
dc.identifier.urihttp://hdl.handle.net/11536/154433-
dc.description.abstractWe perform lattice studies of meson mass spectra and decay constants of the Sp(4) gauge theory in the quenched approximation. We consider two species of (Dirac) fermions as matter field content, transforming in the 2-index antisymmetric and the fundamental representation of the gauge group, respectively. All matter fields are formulated as Wilson fermions. We extrapolate to the continuum and massless limits and compare to each other the results obtained for the two species of mesons. In the case of two fundamental and three antisymmetric fermions, the long-distance dynamics is relevant for composite Higgs models. This is the first lattice study of this class of theories. The global SU(4) x SU(6) symmetry is broken to the Sp(4) x SO(6) subgroup, and the condensates align with the explicit mass terms present in the lattice formulation of the theory. The main results of our quenched calculations are that, with fermions in the 2-index antisymmetric representation of the group, the masses squared and decay constant squared of all the mesons we considered are larger than the corresponding quantities for the fundamental representation, by factors that vary between similar to 1.2 and similar to 2.7. We also present technical results that will be useful for future lattice investigations of dynamical simulations, of composite chimera baryons, and of the approach to large N in the Sp(2N) theories considered. We briefly discuss their high-temperature behavior, where symmetry restoration and enhancement are expected.en_US
dc.language.isoen_USen_US
dc.titleSp(4) gauge theories on the lattice: Quenched fundamental and antisymmetric fermionsen_US
dc.typeArticleen_US
dc.identifier.doi10.1103/PhysRevD.101.074516en_US
dc.identifier.journalPHYSICAL REVIEW Den_US
dc.citation.volume101en_US
dc.citation.issue7en_US
dc.citation.spage0en_US
dc.citation.epage0en_US
dc.contributor.department物理研究所zh_TW
dc.contributor.departmentInstitute of Physicsen_US
dc.identifier.wosnumberWOS:000528781500006en_US
dc.citation.woscount0en_US
Appears in Collections:Articles