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Poly-instanton axion inflation
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Poly-instanton axion inflation
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We investigate the axion inflation model derived by poly-instanton effects in type II superstring theories. Poly-instanton effects are instanton effects corrected by another instanton and it can generate the modulus-axion potential with the double exponential function. Although the axion has a period of small value, this potential can have a flat region because its derivatives are exponentially suppressed by non-perturbative effects. From the view point of the cosmic inflation, such potential is interesting. In this paper, we numerically study the possibilities for realizing the cosmic inflation. We also study their spectral index and other cosmological observables, numerically.
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Cited by 1 Pith paper
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New Type IIB Poly-instanton Effects and Axion Quintessence
Deformation divisors can generate poly-instanton superpotential terms in type IIB Calabi-Yau orientifolds when O3-planes lie on the E3-brane, with explicit CY examples and an axion-quintessence construction matching t...
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