Strengthening the TCC Bound on Inflationary Cosmology
  We show that the constraints which follow from the {\it Trans-Planckian
Censorship Conjecture} for inflationary cosmology can be strengthened if the
pre-inflationary universe was dominated by radiation. The resulting upper bound
on the energy scale of inflation is $\eta \sim 10^4 {\rm GeV}$, close to the
scale accessible to accelerator experiments.
