Warm Quasi-Single Field Inflation
  We study quasi-single field inflation with a warm inflation background. The
thermal effects at small scales can sufficiently enhance the magnitude of the
primordial standard clock signal. This scenario offers us the possibility of
probing the UV physics of the very early universe without the exponentially
small Boltzmann factor when the mass of the isocurvaton is much heavier than
Hubble. The thermal effects at small scales can be studied using the flat space
thermal field theory, connected to an effective description using
non-Bunch-Davies vacuum at large scales, with large clock signal.
