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2012

Effective Field Theory of Multi-Field Inflation a la Weinberg

Khosravi, Nima

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We employ the effective field theory approach for multi-field inflation which is a generalization of Weinberg's work.

In this method the first correction terms in addition to standard terms in the Lagrangian have been considered.
These terms contain up to the fourth derivative of the fields including the scalar field and the metric.
The results show the possible shapes of the interaction terms resulting eventually in non-Gaussianity in a general formalism.

Effective Field Theory of Multi-Field Inflation a la Weinberg · Around

Built on

A. I. Vainshtein, Phys. Lett. B 39 (1972) 393
1972
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E. Elizalde, A. G. Jacksenaev, S. D. Odintsov and I. L. Shapiro, A Four-Dimensional Theory for Quantum Gravity with Conformal and Nonconformal Explicit Solutions
1995
Earlier work this paper cites.
C. Gordon, D. Wands, B. A. Bassett and R. Maartens, Adiabatic and entropy perturbations from inflation
2001
Earlier work this paper cites.
P. Creminelli, On non-gaussianities in single-field inflation
2003
Earlier work this paper cites.

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L. Senatore and M. Zaldarriaga, The Effective Field Theory of Multifield Inflation
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D. Baumann, The Physics of Inflation: A Course for Graduate Students in Particle Physics and Cosmology
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D. Baumann and D. Green, A Field Range Bound for General Single-Field Inflation
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A. Achucarro, J.-O. Gong, S. Hardeman, G. A. Palma and S. P. Patil, Effective theories of single field inflation when heavy fields matter
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Then

X. Chen, Primordial Non-Gaussianities from Inflation Models
Original
2010
Later among the works it cites.
C. M. Peterson and M. Tegmark, Testing Multi-Field Inflation: A Geometric Approach
Original
2011
Later among the works it cites.
C. M. Peterson and M. Tegmark, Testing Two-Field Inflation
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2011
Later among the works it cites.
C. Burrage, C. de Rham, D. Seery and A. J. Tolley, Galileon inflation
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2011
Later among the works it cites.

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