IA/U.Lisboa Seminar - Energy conditions in Starobinsky supergravity - 20 abril 2017

We consider the classical energy conditions (strong, null and weak) in Starobinsky supergravity theories. We study in detail the simplest Starobinsky supergravity model in the ”old-minimal” supergravity setup and find examples of violations of each energy condition for a certain range of the parameters due to extra scalar d.o.f. present in supergravity. We find the null and weak energy conditions to be preserved and the strong energy condition to be violated in the physically relevant examples such as inflation and dark energy.

 

Faculdade de Ciências da Universidade de Lisboa (C6.2.51)

Campo Grande, 1749-016 Lisboa