2013•arXiv (Cornell University)Open access
Primordial non-Gaussianity as a signature of pre-inflationary radiation\n era
Suratna Das
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Abstract
Primordial non-Gaussianity generated in an inflationary model where inflation\nis preceded by a radiation era is discussed. It is shown that both bispectrum\nand trispectrum non-Gaussianities are enhanced due to the presence of\npre-inflationary radiation era. One distinguishing feature of such a scenario\nis that the trispectrum non-Gaussianity is larger than the bispectrum one.\n
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