{"title":"非最小 F(Q)引力模型中的通货膨胀情景","authors":"S. Davood Sadatian, S. Mohamad Reza Hosseini","doi":"10.1016/j.physletb.2024.138944","DOIUrl":null,"url":null,"abstract":"<div><p>In the context of <span><math><mi>f</mi><mo>(</mo><mi>Q</mi><mo>)</mo></math></span> gravity, cosmological inflation takes a different turn. <span><math><mi>f</mi><mo>(</mo><mi>Q</mi><mo>)</mo></math></span> gravity is a modified theory of gravity, where the Lagrangian is a function of the non-metricity scalar <em>Q</em>. <span><math><mi>f</mi><mo>(</mo><mi>Q</mi><mo>)</mo></math></span> gravity theory is part of an extensive class of modified gravity theories designed to explain the accelerated expansion of the universe without the requirement for dark energy. In this paper, we study the modified gravity <span><math><mi>f</mi><mo>(</mo><mi>Q</mi><mo>)</mo></math></span> in which the scalar field is non-minimally coupled with the matter (it has a new interaction term <span><math><mi>α</mi><mi>Q</mi><mo>(</mo><mn>1</mn><mo>+</mo><msup><mrow><mi>ϕ</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>)</mo></math></span> with the inflaton scalar field (<em>ϕ</em>) and non-metricity scalar (<em>Q</em>)). In pursuit, an inflationary model is extended and investigated by determining the slow-roll parameters and obtaining the model's linear perturbations after calculating the field equation. By comparing the model parameters with the CMB observational data, the model is adapted to observational data through the constraint of the parameters. After some numerical calculations, we show our model is consistent with observational data and free of the phantom if <span><math><mn>1</mn><mo><</mo><mi>α</mi><mo><</mo><mn>1.5</mn></math></span> and <span><math><mn>1.42</mn><mo><</mo><msub><mrow><mi>γ</mi></mrow><mrow><mn>2</mn></mrow></msub><mo><</mo><mn>1.75</mn></math></span>.</p></div>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":null,"pages":null},"PeriodicalIF":5.4000,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0370269324005021/pdfft?md5=06bd5fb09c20d422986f3d0b14c68697&pid=1-s2.0-S0370269324005021-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Inflation scenario in a non-minimal f(Q) gravity model\",\"authors\":\"S. Davood Sadatian, S. Mohamad Reza Hosseini\",\"doi\":\"10.1016/j.physletb.2024.138944\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In the context of <span><math><mi>f</mi><mo>(</mo><mi>Q</mi><mo>)</mo></math></span> gravity, cosmological inflation takes a different turn. <span><math><mi>f</mi><mo>(</mo><mi>Q</mi><mo>)</mo></math></span> gravity is a modified theory of gravity, where the Lagrangian is a function of the non-metricity scalar <em>Q</em>. <span><math><mi>f</mi><mo>(</mo><mi>Q</mi><mo>)</mo></math></span> gravity theory is part of an extensive class of modified gravity theories designed to explain the accelerated expansion of the universe without the requirement for dark energy. In this paper, we study the modified gravity <span><math><mi>f</mi><mo>(</mo><mi>Q</mi><mo>)</mo></math></span> in which the scalar field is non-minimally coupled with the matter (it has a new interaction term <span><math><mi>α</mi><mi>Q</mi><mo>(</mo><mn>1</mn><mo>+</mo><msup><mrow><mi>ϕ</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>)</mo></math></span> with the inflaton scalar field (<em>ϕ</em>) and non-metricity scalar (<em>Q</em>)). In pursuit, an inflationary model is extended and investigated by determining the slow-roll parameters and obtaining the model's linear perturbations after calculating the field equation. By comparing the model parameters with the CMB observational data, the model is adapted to observational data through the constraint of the parameters. After some numerical calculations, we show our model is consistent with observational data and free of the phantom if <span><math><mn>1</mn><mo><</mo><mi>α</mi><mo><</mo><mn>1.5</mn></math></span> and <span><math><mn>1.42</mn><mo><</mo><msub><mrow><mi>γ</mi></mrow><mrow><mn>2</mn></mrow></msub><mo><</mo><mn>1.75</mn></math></span>.</p></div>\",\"PeriodicalId\":4,\"journal\":{\"name\":\"ACS Applied Energy Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.4000,\"publicationDate\":\"2024-08-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S0370269324005021/pdfft?md5=06bd5fb09c20d422986f3d0b14c68697&pid=1-s2.0-S0370269324005021-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS Applied Energy Materials\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0370269324005021\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Energy Materials","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0370269324005021","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Inflation scenario in a non-minimal f(Q) gravity model
In the context of gravity, cosmological inflation takes a different turn. gravity is a modified theory of gravity, where the Lagrangian is a function of the non-metricity scalar Q. gravity theory is part of an extensive class of modified gravity theories designed to explain the accelerated expansion of the universe without the requirement for dark energy. In this paper, we study the modified gravity in which the scalar field is non-minimally coupled with the matter (it has a new interaction term with the inflaton scalar field (ϕ) and non-metricity scalar (Q)). In pursuit, an inflationary model is extended and investigated by determining the slow-roll parameters and obtaining the model's linear perturbations after calculating the field equation. By comparing the model parameters with the CMB observational data, the model is adapted to observational data through the constraint of the parameters. After some numerical calculations, we show our model is consistent with observational data and free of the phantom if and .
期刊介绍:
ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.