Wormholes supported by hybrid metric-Palatini gravity

Understand

Recently, a modified theory of gravity was presented, which consists of the superposition of the metric Einstein-Hilbert Lagrangian with an $f(\cal R)$ term constructed \`{a} la Palatini.

• The theory possesses extremely interesting features such as predicting the existence of a long-range scalar field, that explains the late-time cosmic acceleration and passes the local tests, even in the presence of a light scalar field.
• In this brief report, we consider the possibility that wormholes are supported by this hybrid metric-Palatini gravitational theory.
• We present here the general conditions for wormhole solutions according to the null energy conditions at the throat and find specific examples.