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References
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Our metric is given by δμν(μ,ν=1,2,3,) (μ, ν=1, 2, 3) andx 3=it. Naturally the introduction of a suitable mass scale is necessary and in particular we shall work in units for which a normal Reggeon trajectory (f, ϱ) slope is equal to unity. This is a natural choice, for example in dual models.
R. Finkelstein, R. Le Levier andM. Ruderman:Phys. Rev.,83, 326 (1951).
Although our final expressions are formally identical to those exhibited in—ref.(4). they are essentially different since our vacuum expectation value is imaginary and the spontaneous symmetry breaking occurs not from a pomeron intercept above one but one below one. In both cases the final intercept is one.
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Venturi, G. On reggeon field theories and nonzero vacuum expectation values. Lett. Nuovo Cimento 15, 157–160 (1976). https://doi.org/10.1007/BF02727604
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DOI: https://doi.org/10.1007/BF02727604