Energy conditions in Starobinsky supergravity

Abstract

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.

References in corpus (7)

• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• From Linear SUSY to Constrained Superfields
• The Minimal Volkov - Akulov - Starobinsky Supergravity
• Generalized energy conditions in Extended Theories of Gravity
• Embedding (R+R^2)-Inflation into Supergravity
• Extended Theories of Gravity with Generalized Energy Conditions
• Dark Matter and Inflation in $R+\zeta R^2$ Supergravity

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• Deforming the Starobinsky model in ghost-free higher derivative supergravities
• Evaporation/Antievaporation and energy conditions in alternative gravity
• Exploring the parameter space of modified supergravity for double inflation and primordial black hole formation