Interpreting cosmological tensions from the effective field theory of torsional gravity
Cosmological tensions can arise within the Lamda cold dark matter scenario amongst different observational windows, which may indicate new physics beyond the standard paradigm if confirmed by measurements. In this article, we report how to alleviate both the H-0 and sigma(8) tensions simultaneously...
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| Veröffentlicht in: | Physical review. D 2020-06, Vol.101 (12), p.1, Article 121301 |
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| creator | Yan, Sheng-Feng Zhang, Pierre Chen, Jie-Wen Zhang, Xin-Zhe Cai, Yi-Fu Saridakis, Emmanuel N. |
| description | Cosmological tensions can arise within the Lamda cold dark matter scenario amongst different observational windows, which may indicate new physics beyond the standard paradigm if confirmed by measurements. In this article, we report how to alleviate both the H-0 and sigma(8) tensions simultaneously within torsional gravity from the perspective of effective field theory. Following these observations, we construct concrete models of Lagrangians of torsional gravity. Specifically, we consider the parametrization f(T) = -T - 2 Lambda/M-P(2) + alpha T-beta, where two out of the three parameters are independent. This model can efficiently fit observations solving the two tensions. To our knowledge, this is the first time where a modified gravity theory can alleviate both H-0 and sigma(8) tensions simultaneously, hence, offering an additional argument in favor of gravitational modification. |
| doi_str_mv | 10.1103/PhysRevD.101.121301 |
| format | Article |
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D</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yan, Sheng-Feng</au><au>Zhang, Pierre</au><au>Chen, Jie-Wen</au><au>Zhang, Xin-Zhe</au><au>Cai, Yi-Fu</au><au>Saridakis, Emmanuel N.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Interpreting cosmological tensions from the effective field theory of torsional gravity</atitle><jtitle>Physical review. D</jtitle><stitle>PHYS REV D</stitle><date>2020-06-19</date><risdate>2020</risdate><volume>101</volume><issue>12</issue><spage>1</spage><pages>1-</pages><artnum>121301</artnum><issn>1550-7998</issn><issn>2470-0010</issn><eissn>1550-2368</eissn><eissn>2470-0029</eissn><abstract>Cosmological tensions can arise within the Lamda cold dark matter scenario amongst different observational windows, which may indicate new physics beyond the standard paradigm if confirmed by measurements. In this article, we report how to alleviate both the H-0 and sigma(8) tensions simultaneously within torsional gravity from the perspective of effective field theory. Following these observations, we construct concrete models of Lagrangians of torsional gravity. Specifically, we consider the parametrization f(T) = -T - 2 Lambda/M-P(2) + alpha T-beta, where two out of the three parameters are independent. This model can efficiently fit observations solving the two tensions. To our knowledge, this is the first time where a modified gravity theory can alleviate both H-0 and sigma(8) tensions simultaneously, hence, offering an additional argument in favor of gravitational modification.</abstract><cop>COLLEGE PK</cop><pub>Amer Physical Soc</pub><doi>10.1103/PhysRevD.101.121301</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0003-0706-8465</orcidid><orcidid>https://orcid.org/0000-0003-1500-0874</orcidid><orcidid>https://orcid.org/0000-0002-8037-543X</orcidid></addata></record> |
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| source | American Physical Society Journals |
| subjects | Astronomy & Astrophysics Cold dark matter Concrete construction Field theory Gravitation Gravity Parameterization Physical Sciences Physics Physics, Particles & Fields Science & Technology |
| title | Interpreting cosmological tensions from the effective field theory of torsional gravity |
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