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Inflation in extended <strong>the</strong>ories of gravity <br />

Most general single-­‐field scalar-­‐tensor <strong>the</strong>ories with second-­‐order equations of motion <br />

Horndeski (1974) <br />

Deffayet et al (2011) <br />

Charmousis et al (2011) <br />

This action covers most of <strong>the</strong> dark energy models proposed in literature. <br />

l Potential driven inflation: <br />

l K-­‐inflation: <br />

l f(R) gravity and scalar-­‐tensor gravity: <br />

l Galileon: <br />

l Gauss-­‐Bonnet coupling <br />

:

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