Extreme gravitational waves from inflaton fragmentation

摘要: Although inflationary models generically predict a flat spectrum of gravitational waves, we point out general process that produces sharply peaked radiation. This is generic for with complex inflaton field which couples to fermions. In particular, chaotic these may be the most extreme waves in Universe very large energy density fraction 10^-9 and ultra-high frequency, 10^10 Hz. not amenable space based interferometers, signal from this model detectable by future table top experiments.