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S.T., J. Ohashi, S. Kuroyanagi, A De Felice, arXiv: 1305.3044 <br />

Potential−driven slow−roll inflation<br />

10 0 Inclusion of high L data prefers <br />

Planck+WP+BAO+high L <br />

<strong>the</strong> smaller spectral index. <br />

Planck+WP+BAO <br />

4<br />

power law inflation<br />

10 −1<br />

2<br />

1<br />

r 0.05<br />

natural<br />

2/3<br />

10 −2<br />

large−field<br />

small−field<br />

R 2 inflation<br />

10 −3<br />

very<br />

small<br />

field<br />

hybrid2<br />

hybrid1<br />

0.94 0.95 0.96 0.97 0.98 0.99 1 1.01<br />

n s

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