Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume -, Issue 8, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1475-7516/2020/08/027
Keywords
inflation; power spectrum
Funding
- Basic Science Research Program through the National Research Foundation of Korea Research Grants [2016R1D1A1B03930408]
- Mid-career Research Program through National Research Foundation of Korea Research Grants [2019R1A2C2085023]
- National Research Foundation of Korea
- Japan Society for the Promotion of Science [2018K2A9A2A08000127]
- JSPS KAKENHI [JP18K13539, JP17H02894, JP17K18778, JP15H05895, JP17H06359, JP18H04589]
- MEXT KAKENHI [15H05888, 18H04579, JP18H04352]
- DOE [DE-SC0017647]
- Kellett Award of the University of Wisconsin
- JSPS Bilateral Joint Research Projects (JSPS-NRF collaboration) String Axion Cosmology
- JSPS [18K18764]
- Mitsubishi Foundation
- NRF under the Japan-Korea Basic Scientific Cooperation Program
- JSPS Bilateral Open Partnership Joint Research Projects
- Grants-in-Aid for Scientific Research [18H04579] Funding Source: KAKEN
- National Research Foundation of Korea [2019R1A2C2085023] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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We develop an effective-field-theory (EFT) framework for inflation with various symmetry breaking pattern. As a prototype, we formulate anisotropic inflation from the perspective of EFT and construct an effective action of the Nambu-Goldstone bosons for the broken time translation and rotation symmetries. We also calculate the statistical anisotropy in the scalar two-point correlation function for concise examples of the effective action.
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