Imprints of Spinning Particles on Primordial Cosmological Perturbations

If there exist higher-spin particles during inflation which are light compared to the Hubble rate, they may leave distinct statistical anisotropic imprints on the correlators involving scalar and graviton fluctuations. We characterise such signatures using the dS/CFT3 correspondence and the operator...

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Detalles Bibliográficos
Autores principales: Franciolini, Gabriele, Kehagias, Alex, Riotto, Antonio
Lenguaje:eng
Publicado: 2017
Materias:
hep-ph
Particle Physics - Phenomenology
gr-qc
General Relativity and Cosmology
astro-ph.CO
Astrophysics and Astronomy
hep-th
Particle Physics - Theory
Acceso en línea:https://dx.doi.org/10.1088/1475-7516/2018/02/023
http://cds.cern.ch/record/2305750
Descripción
Sumario:If there exist higher-spin particles during inflation which are light compared to the Hubble rate, they may leave distinct statistical anisotropic imprints on the correlators involving scalar and graviton fluctuations. We characterise such signatures using the dS/CFT3 correspondence and the operator product expansion techniques. In particular, we obtain generic results for the case of partially massless higher-spin states.

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