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Cited by 260

The DOI matches its Crossref record; 19 of the 19 references it cites were found in a registry or an index.

The IR-resummed Effective Field Theory of Large Scale Structures

Open access
Senatore, Leonardo, Zaldarriaga, Matias·2015·Journal of Cosmology and Astroparticle Physics

Abstract

We present a new method to resum the effect of large scale motions in the Effective Field Theory of Large Scale Structures. Because the linear power spectrum in ΛCDM is not scale free the effects of the large scale flows are enhanced. Although previous EFT calculations of the equal-time density power spectrum at one and two loops showed a remarkable agreement with numerical results, they also showed a 2% residual which appeared related to the BAO oscillations. We show that this was indeed the case, explain the physical origin and show how a Lagrangian based calculation removes this differences. We propose a simple method to upgrade existing Eulerian calculations to effectively make them Lagrangian and compare the new results with existing fits to numerical simulations. Our new two-loop results agrees with numerical results up to k ∼ 0.6 h Mpc −1 to within 1% with no oscillatory residuals. We also compute power spectra involving momentum which is significantly more affected by the large scale flows. We show how keeping track of these velocities significantly enhances the UV reach of the momentum power spectrum in addition to removing the BAO related residuals. We compute predictions for the real space correlation function around the BAO scale and investigate its sensitivity to the EFT parameters and the details of the resummation technique.

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Metadata

Authors
Senatore, L., & Zaldarriaga, M.
Venue
Journal of Cosmology and Astroparticle Physics
Published
2015-02-10
Volume
2015
Issue
02
Pages
013-013
ISSN
  • 1475-7508 (ISSN-L)
  • 1475-7516
OpenAlex
W1977223600
Cited by
260
References
19
FWCI
9.84
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: The IR-resummed Effective Field Theory of Large Scale Structures. https://app.cochat.ai/papers/10.1088/1475-7516/2015/02/013
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Senatore, L., & Zaldarriaga, M. (2015). The IR-resummed Effective Field Theory of Large Scale Structures. Journal of Cosmology and Astroparticle Physics. https://doi.org/10.1088/1475-7516/2015/02/013

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