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Gravitational probes of ultra-light axions
/ Grin, Daniel (Haverford Coll.) ; Amin, Mustafa A. (Rice U.) ; Gluscevic, Vera (Florida U. ; Princeton U.) ; Grin, Daniel (Haverford Coll.) ; Hlǒzek, Renée (Toronto U., Astron. Dept.) ; Marsh, David J.E. (Inst. Astrophys. Gottingen) ; Poulin, Vivian (U. Montpellier 2, LUPM ; Johns Hopkins U.) ; Prescod-Weinstein, Chanda (New Hampshire U.) ; Smith, Tristan L. (Swarthmore Coll.) ; Ahmed, Zeeshan (SLAC) et al.
The axion is a hypothetical, well-motivated dark-matter particle whose existence would explain the lack of charge-parity violation in the strong interaction. [...]
arXiv:1904.09003.
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17 p.
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Cosmology with the Galaxy Bispectrum Multipoles: Optimal Estimation and Application to BOSS Data
/ Ivanov, Mikhail M. (Princeton, Inst. Advanced Study ; NASA, Goddard) ; Philcox, Oliver H.E. (Princeton, Inst. Advanced Study ; Columbia U. ; Stony Brook U., New York, SCGP ; Princeton U.) ; Cabass, Giovanni (Princeton, Inst. Advanced Study) ; Nishimichi, Takahiro (Kyoto U., Yukawa Inst., Kyoto ; Tokyo U., IPMU) ; Simonović, Marko (CERN) ; Zaldarriaga, Matias (Princeton, Inst. Advanced Study)
We present a framework for self-consistent cosmological analyses of the full-shape anisotropic bispectrum, including the quadrupole $(\ell=2)$ and hexadecapole $(\ell=4)$ moments. This features a novel window-free algorithm for extracting the latter quantities from data, derived using a maximum-likelihood prescription. [...]
arXiv:2302.04414; YITP-23-13; CERN-TH-2023-022.-
2023-04-15 - 40 p.
- Published in : Phys. Rev. D 107 (2023) 083515
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Constraining Single-Field Inflation with MegaMapper
/ Cabass, Giovanni (Princeton, Inst. Advanced Study) ; Ivanov, Mikhail M. (Princeton, Inst. Advanced Study ; NASA, Goddard) ; Philcox, Oliver H.E. (Columbia U. ; Stony Brook U., New York, SCGP) ; Simonovic, Marko (CERN) ; Zaldarriaga, Matias (Princeton, Inst. Advanced Study)
We forecast the constraints on single-field inflation from the bispectrum of future high-redshift surveys such as MegaMapper. Considering non-local primordial non-Gaussianity (NLPNG), we find that current methods will yield constraints of order $\sigma(f_{\rm NL}^{\rm eq})\approx 23$, $\sigma(f_{\rm NL}^{\rm orth})\approx 12$ in a joint power-spectrum and bispectrum analysis, varying both nuisance parameters and cosmology, including a conservative range of scales. [...]
arXiv:2211.14899; CERN-TH-2022-203.-
2023-04-13 - 6 p.
- Published in : Phys. Lett. B 841 (2023) 137912
Fulltext: 2211.14899 - PDF; Publication - PDF;
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Cosmology with the Redshift-Space Galaxy Bispectrum Monopole at One-Loop Order
/ Philcox, Oliver H.E. (Princeton U., Astrophys. Sci. Dept. ; Princeton, Inst. Advanced Study) ; Ivanov, Mikhail M. (Princeton, Inst. Advanced Study) ; Cabass, Giovanni (Princeton, Inst. Advanced Study) ; Simonović, Marko (CERN) ; Zaldarriaga, Matias (Princeton, Inst. Advanced Study) ; Nishimichi, Takahiro (Kyoto U., Yukawa Inst., Kyoto ; Tokyo U., IPMU)
We study the cosmological information content of the redshift-space galaxy bispectrum monopole at one-loop order in perturbation theory. We incorporate all effects necessary for comparison to data: fourth-order galaxy bias, infrared resummation (accounting for the non-linear evolution of baryon acoustic oscillations), ultraviolet counterterms, non-linear redshift-space distortions, stochastic contributions, projection, and binning effects. [...]
arXiv:2206.02800; CERN-TH-2022-092; YITP-22-60.-
2022-08-15 - 51 p.
- Published in : Phys. Rev. D 106 (2022) 043530
Fulltext: PhysRevD.106.043530 - PDF; 2206.02800 - PDF;
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Constraints on multifield inflation from the BOSS galaxy survey
/ Cabass, Giovanni (Princeton, Inst. Advanced Study) ; Ivanov, Mikhail M. (Princeton, Inst. Advanced Study) ; Philcox, Oliver H.E. (Princeton U., Astrophys. Sci. Dept. ; Princeton, Inst. Advanced Study) ; Simonović, Marko (CERN) ; Zaldarriaga, Matias (Princeton, Inst. Advanced Study)
We use redshift-space galaxy clustering data from the BOSS survey to constrain local primordial non-Gaussianity (LPNG). This is of particular importance due to the consistency relations, which imply that a detection of LPNG would rule out all single-field inflationary models. [...]
arXiv:2204.01781; CERN-TH-2022-055.-
2022-08-03 - 20 p.
- Published in : Phys. Rev. D 106 (2022) 043506
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Constraints on Single-Field Inflation from the BOSS Galaxy Survey
/ Cabass, Giovanni (Princeton, Inst. Advanced Study) ; Ivanov, Mikhail M. (Princeton, Inst. Advanced Study) ; Philcox, Oliver H.E. (Princeton U. ; Princeton, Inst. Advanced Study) ; Simonović, Marko (CERN) ; Zaldarriaga, Matias (Princeton, Inst. Advanced Study)
Non-local primordial non-Gaussianity (NLPNG) is a smoking gun of interactions in single-field inflationary models, and can be written as a combination of the equilateral and orthogonal templates. We present the first constraints on these from the redshift-space galaxy power spectra and bispectra of the Baryon Oscillation Spectroscopic Survey (BOSS) data. [...]
arXiv:2201.07238; CERN-TH-2022-005.-
2022-07-06 - 13 p.
- Published in : Phys. Rev. Lett. 129 (2022) 021301
Fulltext: 2201.07238 - PDF; PhysRevLett.129.021301 - PDF;
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Precision analysis of the redshift-space galaxy bispectrum
/ Ivanov, Mikhail M. (Princeton, Inst. Advanced Study) ; Philcox, Oliver H.E. (Princeton, Inst. Advanced Study ; Princeton U., Astrophys. Sci. Dept.) ; Nishimichi, Takahiro (Kyoto U., Yukawa Inst., Kyoto ; Tokyo U., IPMU) ; Simonović, Marko (CERN) ; Takada, Masahiro (Tokyo U., IPMU) ; Zaldarriaga, Matias (Princeton, Inst. Advanced Study)
We study the information content of the angle-averaged (monopole) redshift space galaxy bispectrum. The main novelty of our approach is the use of a systematic tree-level perturbation theory model that includes galaxy bias, IR resummation, and also accounts for nonlinear redshift space distortions, binning, and projection effects. [...]
arXiv:2110.10161; YITP-21-120; CERN-TH-2021-155.-
2022-03-10 - 52 p.
- Published in : Phys. Rev. D 105 (2022) 063512
Fulltext: PhysRevD.105.063512 - PDF; 2110.10161 - PDF;
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Cosmological constraints without nonlinear redshift-space distortions
/ Ivanov, Mikhail M. (Princeton, Inst. Advanced Study) ; Philcox, Oliver H.E. (Princeton, Inst. Advanced Study ; Princeton U., Astrophys. Sci. Dept. ; Cambridge U., DAMTP) ; Simonović, Marko (CERN) ; Zaldarriaga, Matias (Princeton, Inst. Advanced Study) ; Nischimichi, Takahiro (Kyoto U., Yukawa Inst., Kyoto ; Tokyo U., IPMU) ; Takada, Masahiro (Tokyo U., IPMU)
Non-linear redshift-space distortions ("fingers of God") are challenging to model analytically, a fact that limits the applicability of perturbation theory in redshift space as compared to real space. We show how this problem can be mitigated using a new observable, $Q_0$, which can be easily estimated from the redshift space clustering data and is approximately equal to the real space power spectrum. [...]
arXiv:2110.00006; YITP-21-106; YITP-21-10; CERN-TH-2021-143.-
2022-02-15 - 17 p.
- Published in : Phys. Rev. D 105 (2022) 043531
Fulltext: 2110.00006 - PDF; PhysRevD.105.043531 - PDF;
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Modeling Galaxies in Redshift Space at the Field Level
/ Schmittfull, Marcel (Princeton, Inst. Advanced Study) ; Simonović, Marko (CERN) ; Ivanov, Mikhail M. (New York U. ; Moscow, INR) ; Philcox, Oliver H.E. (Princeton, Inst. Advanced Study ; Princeton U., Astrophys. Sci. Dept.) ; Zaldarriaga, Matias (Princeton, Inst. Advanced Study)
We develop an analytical forward model based on perturbation theory to predict the redshift-space galaxy overdensity at the field level given a realization of the initial conditions. We find that the residual noise between the model and simulated galaxy density has a power spectrum that is white on large scales, with size comparable to the shot noise. [...]
arXiv:2012.03334.-
2021-05-20 - 23 p.
- Published in : JCAP 2105 (2021) 059
Fulltext: PDF;
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