Towards a realistic solution of the cosmological constant fine-tuning problem by Higgs inflation
Why is the cosmological constant [Lambda] observed today so much smaller than the Planck scale, and why is the Universe accelerating at present? This is the so-called cosmological constant fine-tuning problem. In this paper, we find that this problem may be solved with the help of Higgs inflation by...
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| Veröffentlicht in: | Physical review. D, Particles, fields, gravitation, and cosmology Particles, fields, gravitation, and cosmology, 2014-11, Vol.90 (10), Article 103009 |
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| container_title | Physical review. D, Particles, fields, gravitation, and cosmology |
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| creator | Feng, Chao-Jun Li, Xin-Zhou |
| description | Why is the cosmological constant [Lambda] observed today so much smaller than the Planck scale, and why is the Universe accelerating at present? This is the so-called cosmological constant fine-tuning problem. In this paper, we find that this problem may be solved with the help of Higgs inflation by simply assuming a variable cosmological "constant" during the inflationary epoch. Meanwhile, it could predict a large tensor-to-scalar ratio r [asymptotically =] 0.20 and a large running of the spectral index n' sub(s) [asymptotically =] -0.028 with a red-tilt spectrum n sub(s) [asymptotically =] 0.96, as well as a big enough number of e-folds N [asymptotically =] 40, requiring that we solve the problems in big bang cosmology with the help of [Lambda]. |
| doi_str_mv | 10.1103/PhysRevD.90.103009 |
| format | Article |
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D, Particles, fields, gravitation, and cosmology</title><description>Why is the cosmological constant [Lambda] observed today so much smaller than the Planck scale, and why is the Universe accelerating at present? This is the so-called cosmological constant fine-tuning problem. In this paper, we find that this problem may be solved with the help of Higgs inflation by simply assuming a variable cosmological "constant" during the inflationary epoch. Meanwhile, it could predict a large tensor-to-scalar ratio r [asymptotically =] 0.20 and a large running of the spectral index n' sub(s) [asymptotically =] -0.028 with a red-tilt spectrum n sub(s) [asymptotically =] 0.96, as well as a big enough number of e-folds N [asymptotically =] 40, requiring that we solve the problems in big bang cosmology with the help of [Lambda].</description><subject>Asymptotic properties</subject><subject>Cosmological constant</subject><subject>Cosmology</subject><subject>Gravitation</subject><subject>Inflation</subject><subject>Running</subject><subject>Spectra</subject><subject>Universe</subject><issn>1550-7998</issn><issn>1550-2368</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNo1kEtLAzEUhYMoWKt_wFWWbqbmMY9kKfVRoaBIXY95zTSSJnWSUfrvTW1d3XsPH4dzDwDXGM0wRvT2db2Lb-b7fsazgChC_ARMcFWhgtCanR73hnN2Di5i_ESIkrppJuBjFX7EoCMUcDDC2ZisgjG4MdngYehgWhuoQtwEF3qrhMuHj0n4BDvrTZFGb30Pt0OQzmyg3MGF7fsIre-c2HtcgrNOuGiujnMK3h8fVvNFsXx5ep7fLQtFGEpFyTUSkjFTEtblzERrXdWoamhFtJFYSmUoZ3X-g-qSlHVpFBIIaSWFNBmbgpuDb47yNZqY2o2NyjgnvAljbHGDGS9Rw8uMkgOqhhDjYLp2O9iNGHYtRu2-zva_zpZn4a9O-gu8CmwI</recordid><startdate>20141121</startdate><enddate>20141121</enddate><creator>Feng, Chao-Jun</creator><creator>Li, Xin-Zhou</creator><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20141121</creationdate><title>Towards a realistic solution of the cosmological constant fine-tuning problem by Higgs inflation</title><author>Feng, Chao-Jun ; Li, Xin-Zhou</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c280t-49d0ab88e428f2362ddd56057352deb1bbce39861553d42464ec0a00dcbabe573</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Asymptotic properties</topic><topic>Cosmological constant</topic><topic>Cosmology</topic><topic>Gravitation</topic><topic>Inflation</topic><topic>Running</topic><topic>Spectra</topic><topic>Universe</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Feng, Chao-Jun</creatorcontrib><creatorcontrib>Li, Xin-Zhou</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physical review. 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In this paper, we find that this problem may be solved with the help of Higgs inflation by simply assuming a variable cosmological "constant" during the inflationary epoch. Meanwhile, it could predict a large tensor-to-scalar ratio r [asymptotically =] 0.20 and a large running of the spectral index n' sub(s) [asymptotically =] -0.028 with a red-tilt spectrum n sub(s) [asymptotically =] 0.96, as well as a big enough number of e-folds N [asymptotically =] 40, requiring that we solve the problems in big bang cosmology with the help of [Lambda].</abstract><doi>10.1103/PhysRevD.90.103009</doi></addata></record> |
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| subjects | Asymptotic properties Cosmological constant Cosmology Gravitation Inflation Running Spectra Universe |
| title | Towards a realistic solution of the cosmological constant fine-tuning problem by Higgs inflation |
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