Electromagnetic Antennas for the Resonant Detection of the Stochastic
  Gravitational Wave Background
  Stochastic gravitational wave background from the early Universe has a
cut-off frequency close to 100 MHz, due to the horizon of the inflationary
phase. To detect gravitational waves at such frequencies, resonant
electromagnetic cavities are very suitable. In this work, we study the
frequency sensitivity of such detectors, and show how we could use them to
probe this cut-off frequency and also the energy density per frequency of this
stochastic background. This paper paves the way for further experimental
studies to probe the most ancient relic of the Universe.
