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We compute the non-Gaussianities that arise in single field, slow rollinflationary models arising from arbitrary homogeneous initial states, as wellas subleading contributions to the power spectrum. Non Bunch-Davies vacuuminitial states can arise if the transition to the single field, slow rollinflation phase occurs only shortly before observable modes left the horizon.They can also arise from new physics at high energies that has been integratedout. Our general result for the bispectrum exhibits several features that werepreviously seen in special cases.

Primordial non-Gaussianities in single field inflationary models with non-trivial initial states