Constraining Liberated Supergravity

Abstract

Fermionic terms in a class of locally supersymmetric theories called "liberated supergravity" are nonrenormalizable interactions proportional to inverse powers of the supersymmetry breaking scale and Planck mass. This property defines an intrinsic cutoff for liberated supergravities, which are therefore effective theories valid only below energies that never exceed the cutoff. Requiring that the cutoff exceeds current theoretical and observational bounds shows that the new scalar potential terms allowed by liberated supergravity can neither change the cosmological constant predicted by supergravity by any observable amount, nor give measurable contributions to particle masses. We show that it is nevertheless possible to define a simple liberated supergravity model of slow roll inflation valid up to energy scales that are well above the Hubble parameter during inflation and exceeds observable limits after inflation. The key to constructing a viable model is to change the supersymmetry breaking scale, from a Planck-scale value during inflation, to TeV-scale after inflation.

arXiv comment15 pages

References in corpus (7)

• Fayet-Iliopoulos terms in supergravity without gauged R-symmetry
• Fayet-Iliopoulos terms in supergravity and D-term inflation
• General couplings of a vector multiplet in N=1 supergravity with new FI terms
• Linear Versus Non-linear Supersymmetry, in General
• Liberated N=1 Supergravity
• New Kähler invariant Fayet-Iliopoulos terms in supergravity and cosmological applications
• Component versus Superspace Approaches to D=4, N=1 Conformal Supergravity

Cited by in corpus (6)

• The unbearable lightness of charged gravitini
• Inflation, Gravity Mediated Supersymmetry Breaking, and de Sitter Vacua in Supergravity with a Kähler-Invariant FI Term
• Complex Linear Multiplets and Local Supersymmetry Breaking
• More on massive gravitino scattering amplitudes and the unitarity cutoff of the new Fayet-Iliopoulos terms
• Supermassive gauginos in supergravity inflation with high-scale SUSY breaking
• Component Actions of Liberated $\mathcal{N}=1$ Supergravity and New Fayet-Iliopoulos Terms in Superconformal Tensor Calculus