Glueball masses and string tension Smeared loop-loop correlation functions |
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| Institution: | 1. Dipartimento di Fisica, Universita'' di Roma II “Tor Vergata”, Via Orazio Raimondo, 00173 Roma, Italy;2. INFN, Sezione di Roma, Italy;1. Department of Physics, Faculty of Science, University of Zagreb, Bijenička cesta 32, 10000 Zagreb, Croatia;2. Dipartimento di Fisica, “Sapienza” Università di Roma, piazzale Aldo Moro 5, 00185, Rome, Italy;3. Rudjer Bošković Institute, Bijenička cesta 54, HR-10002 Zagreb, Croatia;1. Instituto de Física Gleb Wataghin - UNICAMP, 13083-859, Campinas, SP, Brazil;2. Institute of Physics and Mathematics, Federal University of Pelotas, Postal Code 354, 96010-900, Pelotas, RS, Brazil;3. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;4. Departamento de Física, Universidade do Estado de Santa Catarina, 89219-710 Joinville, SC, Brazil |
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| Abstract: | By using results obtained by the Ape Collaboration 1] we study the glueball spectrum and the string tension in lattice QCD by analyzing correlation functions between operators. We use and discuss the smearing method. We consider a 53 × 16 lattice at β = 5.6 as a test case, and a 123 × 32 lattice at β = 5.9 in order to compare with the old wall results of ref. 3]. We study the structure of the excited states. |
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