Hidden constants: The θ parameter of QCD and the cosmological constant of N = 8 supergravity

Details Hidden constants: The θ parameter of QCD and the cosmological constant of N = 8 supergravity Hidden constants: The θ parameter of QCD and the cosmological constant of N = 8 supergravity

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980nuphb.176..509a&link_type=abstract

Nuclear Physics B, Volume 176, Issue 2, p. 509-522.

Physics

Nuclear Physics

120

Scientific paper

For field theories that include the abelian gauge field Aμνϱ the field equations allow an arbitrary integration constant, which does not appear in the lagrangian but which does affect the physics. We present two applications: (i) the θ parameter of effective lagrangians for chiral symmetry breaking in QCD, and (ii) the cosmological constant in N = 8 supergravity, which does not require a gauging of the O(8) symmetry, but is rather due to a spontaneous breakdown of supersymmetry.

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