Glueball masses as a test of the 1/N expansion

Siu A. Chin, Marek Karliner

Research output: Contribution to journalArticlepeer-review


We compute the scalar-glueball mass m(0++) in units of the square root of the string tension, for SU(N) gauge theories on the lattice, with N=2,3,5,6. We identify a general-scaling window in which the glueball mass is approximately independent of the lattice spacing, yielding an estimate of m(0++) in the continuum. The estimate is corroborated by the excellent agreement between Hamiltonian and Lagrangean results for N=2,3. The continuum values of m(0++) thus obtained for various values of N are remarkably close to each other, indicating a rapid convergence of the 1/N expansion.

Original languageEnglish
Pages (from-to)1803-1806
Number of pages4
JournalPhysical Review Letters
Issue number18
StatePublished - 1987
Externally publishedYes


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