Abstract
The classical field theories of massless fields of arbitrary, fixed, integral spins reach their simplest Gupta-Bleuler triplet structure when the gauge-fixing parameter c is put equal to zero (‘the Feynman Gauge’). This value of c is peculiar to the flat space theory. In a De Sitter massless field theory with spin s, the ‘best value’ of c is shown to be equal to 2/2s+1.
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