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Parity-violating and anisotropic correlations in pseudoscalar inflation · Around

2014

Parity-violating and anisotropic correlations in pseudoscalar inflation

Bartolo, Nicola, Matarrese, Sabino, Peloso, Marco et al.

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A pseudo-scalar inflaton field can have interesting phenomenological signatures associated with parity violation.

The existing analyses of these signatures typically assume statistical isotropy.
In the present work we instead investigate the possibility that a pseudo-scalar inflaton is coupled to a vector field carrying a small but non-negligible vacuum expectation value (vev) coherent over our Hubble patch.
We show that, in such case, correlators involving the primordial curvature perturbations and gravitational waves violate both statistical isotropy and parity symmetry.

Built on

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