We show how we can implement, within Supergravity, chaotic
inflation in the presence of a pole of order one or two in the
kinetic mixing of the inflaton sector. This pole arises due to the
selected logarithmic Kahler potentials K, which parameterize
hyperbolic manifolds with scalar curvature related to the
coefficient (−N)<0 of a logarithmic term. The associated
superpotential W exhibits the same R charge with the
inflaton-accompanying superfield and includes all the allowed
terms. The role of the inflaton can be played by a gauge singlet
or non-singlet superfield. Models with one logarithmic term in K
for the inflaton, require N=2, some tuning -- of the order of
10−5 -- between the terms of W and predict a tensor-to-scalar
ratio r at the level of 0.001. The tuning can be totally
eluded for more structured K's, with N values increasing with
r and spectral index close or even equal to its present central
observational value.
