SU(2,1) / (SU(2) x U(1)) B-L Higgs Inflation. (arXiv:2109.06618v1 [hep-ph])

<a href="http://arxiv.org/find/hep-ph/1/au:+Pallis_C/0/1/0/all/0/1">C Pallis</a>

We present a realization of Higgs inflation within Supergravity which is

largely tied to the existence of a pole of order two in the kinetic term of the

inflaton field. This pole arises due to the selected Kaehler potential which

parameterizes the SU(2,1) / (SU(2) x U(1)) manifold with scalar curvature

R_{21}=-6/N. The associated superpotential includes, in addition to the Higgs

superfields, a stabilizer superfield, respects a B-L gauge and an R symmetries

and contains the first allowed nonrenormalizable term. If the coefficient of

this term is almost equal to that of the others within about 10^-5 and N=2, the

inflationary observables can be done compatible with the present data. The

tuning can be eluded if we modify the Kaehler potential associated with the

manifold above. In this case, inflation can be realized with just

renormalizable superpotential terms and results to higher tensor-to-scalar

ratios as N approaches its maximum at N~80.

We present a realization of Higgs inflation within Supergravity which is

largely tied to the existence of a pole of order two in the kinetic term of the

inflaton field. This pole arises due to the selected Kaehler potential which

parameterizes the SU(2,1) / (SU(2) x U(1)) manifold with scalar curvature

R_{21}=-6/N. The associated superpotential includes, in addition to the Higgs

superfields, a stabilizer superfield, respects a B-L gauge and an R symmetries

and contains the first allowed nonrenormalizable term. If the coefficient of

this term is almost equal to that of the others within about 10^-5 and N=2, the

inflationary observables can be done compatible with the present data. The

tuning can be eluded if we modify the Kaehler potential associated with the

manifold above. In this case, inflation can be realized with just

renormalizable superpotential terms and results to higher tensor-to-scalar

ratios as N approaches its maximum at N~80.

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