论文标题
约束解放的超级重力
Constraining Liberated Supergravity
论文作者
论文摘要
一类称为“解放超级重力”的本地超对称理论中的费米子术语是与超对称性断裂量表和普朗克质量的反向逆力成正比的非肾上腺功能相互作用。该属性定义了解放的超级实力的固有截止，因此，该属性仅在不超过截止的能量以下的有效理论有效。要求临界值超过当前的理论和观察界，表明由释放的超级重力允许的新标量势术语不能通过任何可观察到的超级重力预测的宇宙常数改变，也不能对粒子质量的可测量贡献。我们表明，有可能定义一个简单的解放的慢速通货膨胀模型，该模型有效到通货膨胀期间远高于哈勃参数的能量尺度，并超过了通货膨胀后可观察到的限制。构建可行模型的关键是将超对称性量表从通货膨胀期间的普朗克级值转变为通货膨胀后的TEV规模。
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.
