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Title: On the IR-resummation in the EFTofLSS

Abstract

Here, we propose a simplification for the IR-resummation scheme of [1] and also include its next-to-leading order corrections coming from the tree-level three-point function of the long displacement field. First we show that the new simplified formula shares the same properties of the resummation of [2]. In Fourier space, the IR-resummed power spectrum has no residual wiggles and the two-loop calculation matches the non-linear power spectrum of the Dark Sky simulation at z = 0 up to k ≃ 0.34 h Mpc –1 within cosmic variance. Then, we find that the additional subleading terms (although parametrically infrared-enhanced) modify the leading-order IR-resummed correlation function only in a marginal way, implying that the IR-resummation scheme can robustly predict the shape of the BAO peak.

Authors:
 [1];  [2]
  1. Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
  2. New York Univ., New York, NY (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1458729
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
Journal Volume: 2018; Journal Issue: 05; Journal ID: ISSN 1475-7516
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS

Citation Formats

Senatore, Leonardo, and Trevisan, Gabriele. On the IR-resummation in the EFTofLSS. United States: N. p., 2018. Web. doi:10.1088/1475-7516/2018/05/019.
Senatore, Leonardo, & Trevisan, Gabriele. On the IR-resummation in the EFTofLSS. United States. doi:10.1088/1475-7516/2018/05/019.
Senatore, Leonardo, and Trevisan, Gabriele. Tue . "On the IR-resummation in the EFTofLSS". United States. doi:10.1088/1475-7516/2018/05/019. https://www.osti.gov/servlets/purl/1458729.
@article{osti_1458729,
title = {On the IR-resummation in the EFTofLSS},
author = {Senatore, Leonardo and Trevisan, Gabriele},
abstractNote = {Here, we propose a simplification for the IR-resummation scheme of [1] and also include its next-to-leading order corrections coming from the tree-level three-point function of the long displacement field. First we show that the new simplified formula shares the same properties of the resummation of [2]. In Fourier space, the IR-resummed power spectrum has no residual wiggles and the two-loop calculation matches the non-linear power spectrum of the Dark Sky simulation at z = 0 up to k ≃ 0.34 h Mpc–1 within cosmic variance. Then, we find that the additional subleading terms (although parametrically infrared-enhanced) modify the leading-order IR-resummed correlation function only in a marginal way, implying that the IR-resummation scheme can robustly predict the shape of the BAO peak.},
doi = {10.1088/1475-7516/2018/05/019},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 05,
volume = 2018,
place = {United States},
year = {2018},
month = {5}
}

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    Works referencing / citing this record:

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