FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3099459948> ?p ?o ?g. }

• W3099459948 endingPage "040" @default.
• W3099459948 startingPage "040" @default.
• W3099459948 abstract "Massive neutrinos suppress the growth of structure below their free-streaming scale and leave an imprint on large-scale structure. Measuring this imprint allows us to constrain the sum of neutrino masses, $M_nu$, a key parameter in particle physics beyond the Standard Model. However, degeneracies among cosmological parameters, especially between $M_nu$ and $sigma_8$, limit the constraining power of standard two-point clustering statistics. In this work, we investigate whether we can break these degeneracies and constrain $smnu$ with the next higher-order correlation function --- the bispectrum. We first examine the redshift-space halo bispectrum of $800$ $N$-body simulations from the HADES suite and demonstrate that the bispectrum helps break the $M_nu$--$sigma_8$ degeneracy. Then using 22,000 $N$-body simulations of the Quijote suite, we quantify for the first time the full information content of the redshift-space halo bispectrum down to nonlinear scales using a Fisher matrix forecast of ${Omega_m$, $Omega_b$, $h$, $n_s$, $sigma_8$, $M_nu}$. For $k_{rm max}{=}0.5~h/{rm Mpc}$, the bispectrum provides $Omega_m$, $Omega_b$, $h$, $n_s$, and $sigma_8$ constraints 1.9, 2.6, 3.1, 3.6, and 2.6 times tighter than the power spectrum. For $M_nu$, the bispectrum improves the 1$sigma$ constraint from 0.2968 to 0.0572 eV --- over 5 times tighter than the power spectrum. Even with priors from {em Planck}, the bispectrum improves $M_nu$ constraints by a factor of 1.8. Although we reserve marginalizing over a more complete set of bias parameters to the next paper of the series, these constraints are derived for a $(1~h^{-1}{rm Gpc})^3$ box, a substantially smaller volume than upcoming surveys. Thus, our results demonstrate that the bispectrum offers significant improvements over the power spectrum, especially for constraining $M_nu$." @default.
• W3099459948 created "2020-11-23" @default.
• W3099459948 creator A5002061021 @default.
• W3099459948 creator A5011769443 @default.
• W3099459948 creator A5045989911 @default.
• W3099459948 creator A5078406360 @default.
• W3099459948 date "2020-03-17" @default.
• W3099459948 modified "2023-10-14" @default.
• W3099459948 title "Constraining <i>M</i>_ν with the bispectrum. Part I. Breaking parameter degeneracies" @default.
• W3099459948 cites W1555089529 @default.
• W3099459948 cites W1599193413 @default.
• W3099459948 cites W1701962264 @default.
• W3099459948 cites W1742512171 @default.
• W3099459948 cites W1791782055 @default.
• W3099459948 cites W1890585118 @default.
• W3099459948 cites W1943306457 @default.
• W3099459948 cites W1966599010 @default.
• W3099459948 cites W1967922045 @default.
• W3099459948 cites W1974931032 @default.
• W3099459948 cites W1979071750 @default.
• W3099459948 cites W1983742876 @default.
• W3099459948 cites W1986128827 @default.
• W3099459948 cites W1993731285 @default.
• W3099459948 cites W2000310419 @default.
• W3099459948 cites W2007077972 @default.
• W3099459948 cites W2012819131 @default.
• W3099459948 cites W2022305609 @default.
• W3099459948 cites W2032469582 @default.
• W3099459948 cites W2045111814 @default.
• W3099459948 cites W2052394465 @default.
• W3099459948 cites W2052424045 @default.
• W3099459948 cites W2059350677 @default.
• W3099459948 cites W2081777133 @default.
• W3099459948 cites W2085656538 @default.
• W3099459948 cites W2088125843 @default.
• W3099459948 cites W2092193261 @default.
• W3099459948 cites W2106346596 @default.
• W3099459948 cites W2123031337 @default.
• W3099459948 cites W2170117637 @default.
• W3099459948 cites W2191668141 @default.
• W3099459948 cites W2195397625 @default.
• W3099459948 cites W2201975822 @default.
• W3099459948 cites W2203021331 @default.
• W3099459948 cites W2213101966 @default.
• W3099459948 cites W2213631864 @default.
• W3099459948 cites W2280501718 @default.
• W3099459948 cites W2299345254 @default.
• W3099459948 cites W2306649002 @default.
• W3099459948 cites W2399003145 @default.
• W3099459948 cites W2416612325 @default.
• W3099459948 cites W2542974401 @default.
• W3099459948 cites W2551581366 @default.
• W3099459948 cites W2561194394 @default.
• W3099459948 cites W2738321489 @default.
• W3099459948 cites W2744438748 @default.
• W3099459948 cites W2759641966 @default.
• W3099459948 cites W2774165291 @default.
• W3099459948 cites W2774511434 @default.
• W3099459948 cites W2787378522 @default.
• W3099459948 cites W2790106360 @default.
• W3099459948 cites W2884199666 @default.
• W3099459948 cites W2890355685 @default.
• W3099459948 cites W2903999739 @default.
• W3099459948 cites W2971790493 @default.
• W3099459948 cites W3098221464 @default.
• W3099459948 cites W3099325029 @default.
• W3099459948 cites W3100337128 @default.
• W3099459948 cites W3100493532 @default.
• W3099459948 cites W3100533766 @default.
• W3099459948 cites W3100606316 @default.
• W3099459948 cites W3101369122 @default.
• W3099459948 cites W3101475602 @default.
• W3099459948 cites W3101494846 @default.
• W3099459948 cites W3101503581 @default.
• W3099459948 cites W3101597850 @default.
• W3099459948 cites W3102094851 @default.
• W3099459948 cites W3102190986 @default.
• W3099459948 cites W3102291437 @default.
• W3099459948 cites W3102376483 @default.
• W3099459948 cites W3102705529 @default.
• W3099459948 cites W3102889897 @default.
• W3099459948 cites W3103368970 @default.
• W3099459948 cites W3103604180 @default.
• W3099459948 cites W3104596674 @default.
• W3099459948 cites W3104772143 @default.
• W3099459948 cites W3105042846 @default.
• W3099459948 cites W3105424954 @default.
• W3099459948 cites W3106522028 @default.
• W3099459948 cites W3106530008 @default.
• W3099459948 cites W3121748459 @default.
• W3099459948 cites W3121784827 @default.
• W3099459948 cites W3122865512 @default.
• W3099459948 cites W3124634977 @default.
• W3099459948 cites W3124761073 @default.
• W3099459948 cites W3125055774 @default.
• W3099459948 cites W4292875581 @default.
• W3099459948 cites W851516976 @default.
• W3099459948 doi "https://doi.org/10.1088/1475-7516/2020/03/040" @default.

• next