Curvaton and quantum gravity effect on the tensor to scalar ratio of the chaotic inflation

Understand

The expected tensor-to-scalar ratio estimate of the upcoming CMB mission probe measurements may establish a lower value of the ratio than the currently obtained value.

• It can be described in terms of a single field chaotic inflation model along with the curvaton or quantum gravity or their combined effect.
• Consequently, the role of quantum gravity or curvaton in the dynamics of the early universe may not be ruled out.
• The curvaton scenario and quantum gravity effect can be tested experimentally.