5σ tension between Planck cosmic microwave background and eBOSS Lyman-alpha forest and constraints on physics beyond ΛCDM
We find that combined Planck cosmic microwave background, baryon acoustic oscillations, and supernovae data analyzed under Λ cold dark matter (ΛCDM) are in 4.9σ tension with the extended Baryon Oscillation Spectroscopic Survey (eBOSS) Lyα forest in inference of the linear matter power spectrum at wa...
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| Format: | Article |
| Language: | English |
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American Physical Society
2025-01-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.7.L012018 |
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| author | Keir K. Rogers Vivian Poulin |
| author_facet | Keir K. Rogers Vivian Poulin |
| author_sort | Keir K. Rogers |
| collection | DOAJ |
| description | We find that combined Planck cosmic microwave background, baryon acoustic oscillations, and supernovae data analyzed under Λ cold dark matter (ΛCDM) are in 4.9σ tension with the extended Baryon Oscillation Spectroscopic Survey (eBOSS) Lyα forest in inference of the linear matter power spectrum at wave number ∼1hMpc^{−1} and redshift = 3. Model extensions can alleviate this tension: running in the tilt of the primordial power spectrum (α_{s}∼−0.01); a fraction ∼(1−5)% of ultralight axion dark matter (DM) with particle mass ∼10^{−25} eV or warm DM with mass ∼10 eV. The new Dark Energy Spectroscopic Instrument survey, coupled with high-accuracy modeling, will help distinguish the source of this discrepancy. |
| format | Article |
| id | doaj-art-0c0c8372bfd64626a074a3f0c2b189a3 |
| institution | Kabale University |
| issn | 2643-1564 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj-art-0c0c8372bfd64626a074a3f0c2b189a32025-01-22T16:08:44ZengAmerican Physical SocietyPhysical Review Research2643-15642025-01-0171L01201810.1103/PhysRevResearch.7.L0120185σ tension between Planck cosmic microwave background and eBOSS Lyman-alpha forest and constraints on physics beyond ΛCDMKeir K. RogersVivian PoulinWe find that combined Planck cosmic microwave background, baryon acoustic oscillations, and supernovae data analyzed under Λ cold dark matter (ΛCDM) are in 4.9σ tension with the extended Baryon Oscillation Spectroscopic Survey (eBOSS) Lyα forest in inference of the linear matter power spectrum at wave number ∼1hMpc^{−1} and redshift = 3. Model extensions can alleviate this tension: running in the tilt of the primordial power spectrum (α_{s}∼−0.01); a fraction ∼(1−5)% of ultralight axion dark matter (DM) with particle mass ∼10^{−25} eV or warm DM with mass ∼10 eV. The new Dark Energy Spectroscopic Instrument survey, coupled with high-accuracy modeling, will help distinguish the source of this discrepancy.http://doi.org/10.1103/PhysRevResearch.7.L012018 |
| spellingShingle | Keir K. Rogers Vivian Poulin 5σ tension between Planck cosmic microwave background and eBOSS Lyman-alpha forest and constraints on physics beyond ΛCDM Physical Review Research |
| title | 5σ tension between Planck cosmic microwave background and eBOSS Lyman-alpha forest and constraints on physics beyond ΛCDM |
| title_full | 5σ tension between Planck cosmic microwave background and eBOSS Lyman-alpha forest and constraints on physics beyond ΛCDM |
| title_fullStr | 5σ tension between Planck cosmic microwave background and eBOSS Lyman-alpha forest and constraints on physics beyond ΛCDM |
| title_full_unstemmed | 5σ tension between Planck cosmic microwave background and eBOSS Lyman-alpha forest and constraints on physics beyond ΛCDM |
| title_short | 5σ tension between Planck cosmic microwave background and eBOSS Lyman-alpha forest and constraints on physics beyond ΛCDM |
| title_sort | 5σ tension between planck cosmic microwave background and eboss lyman alpha forest and constraints on physics beyond λcdm |
| url | http://doi.org/10.1103/PhysRevResearch.7.L012018 |
| work_keys_str_mv | AT keirkrogers 5stensionbetweenplanckcosmicmicrowavebackgroundandebosslymanalphaforestandconstraintsonphysicsbeyondlcdm AT vivianpoulin 5stensionbetweenplanckcosmicmicrowavebackgroundandebosslymanalphaforestandconstraintsonphysicsbeyondlcdm |