{"title":"具有暗物质流体的代数耦合精粹场中的粒子产生场景","authors":"Saddam Hussain","doi":"10.1016/j.cjph.2025.06.009","DOIUrl":null,"url":null,"abstract":"<div><div>We investigate the dynamics of an algebraically coupled quintessence field with a dark matter fluid, focusing on particle production through the action principle via a modified interaction Lagrangian. The interaction parameter serves as the source of dark matter particle production and entropy generation. As particle creation occurs due to the interaction between the field and fluid sectors, the system exhibits additional pressure. Our analysis includes studying the system’s dynamics by considering an exponential type of interaction corresponding to the field’s exponential potential. We assess the system’s background dynamics using the dynamical system stability technique to derive the constraints on the model parameters. Additionally, we determine the best-fit values of the model parameters against two combinations of data sets: (i) Cosmic Chronometer (CC) + Pantheon + SH0ES, and (ii) CC + Pantheon + SH0ES + SDSS BAO + DESI BAO. By employing a comprehensive data analysis technique, we compare the evidence of our models to flat <span><math><mi>Λ</mi></math></span>CDM. Based on the Akaike Information Criterion (AIC) and Bayesian Information Criterion (BIC), one of the models emerges as a robust alternative to <span><math><mi>Λ</mi></math></span>CDM when considering the joint data sets.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":"Pages 673-695"},"PeriodicalIF":4.6000,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Particle production scenario in an algebraically coupled quintessence field with a dark matter fluid\",\"authors\":\"Saddam Hussain\",\"doi\":\"10.1016/j.cjph.2025.06.009\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>We investigate the dynamics of an algebraically coupled quintessence field with a dark matter fluid, focusing on particle production through the action principle via a modified interaction Lagrangian. The interaction parameter serves as the source of dark matter particle production and entropy generation. As particle creation occurs due to the interaction between the field and fluid sectors, the system exhibits additional pressure. Our analysis includes studying the system’s dynamics by considering an exponential type of interaction corresponding to the field’s exponential potential. We assess the system’s background dynamics using the dynamical system stability technique to derive the constraints on the model parameters. Additionally, we determine the best-fit values of the model parameters against two combinations of data sets: (i) Cosmic Chronometer (CC) + Pantheon + SH0ES, and (ii) CC + Pantheon + SH0ES + SDSS BAO + DESI BAO. By employing a comprehensive data analysis technique, we compare the evidence of our models to flat <span><math><mi>Λ</mi></math></span>CDM. Based on the Akaike Information Criterion (AIC) and Bayesian Information Criterion (BIC), one of the models emerges as a robust alternative to <span><math><mi>Λ</mi></math></span>CDM when considering the joint data sets.</div></div>\",\"PeriodicalId\":10340,\"journal\":{\"name\":\"Chinese Journal of Physics\",\"volume\":\"97 \",\"pages\":\"Pages 673-695\"},\"PeriodicalIF\":4.6000,\"publicationDate\":\"2025-07-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chinese Journal of Physics\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0577907325002278\",\"RegionNum\":2,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"PHYSICS, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chinese Journal of Physics","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0577907325002278","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
摘要
我们研究了与暗物质流体代数耦合的精质场的动力学,重点研究了通过修正的相互作用拉格朗日量通过作用原理产生的粒子。相互作用参数是暗物质粒子产生和熵产生的来源。由于油田和流体之间的相互作用,产生了颗粒,系统会产生额外的压力。我们的分析包括通过考虑与场的指数势相对应的指数型相互作用来研究系统的动力学。我们利用动力系统稳定性技术来评估系统的背景动力学,从而得出模型参数的约束条件。此外,我们根据两种数据集组合确定模型参数的最佳拟合值:(i) Cosmic Chronometer (CC) + Pantheon + SH0ES,以及(ii) CC + Pantheon + SH0ES + SDSS BAO + DESI BAO。通过采用综合数据分析技术,我们将模型的证据与平坦ΛCDM进行比较。基于赤池信息准则(AIC)和贝叶斯信息准则(BIC),其中一个模型在考虑联合数据集时作为ΛCDM的鲁棒替代方案出现。
Particle production scenario in an algebraically coupled quintessence field with a dark matter fluid
We investigate the dynamics of an algebraically coupled quintessence field with a dark matter fluid, focusing on particle production through the action principle via a modified interaction Lagrangian. The interaction parameter serves as the source of dark matter particle production and entropy generation. As particle creation occurs due to the interaction between the field and fluid sectors, the system exhibits additional pressure. Our analysis includes studying the system’s dynamics by considering an exponential type of interaction corresponding to the field’s exponential potential. We assess the system’s background dynamics using the dynamical system stability technique to derive the constraints on the model parameters. Additionally, we determine the best-fit values of the model parameters against two combinations of data sets: (i) Cosmic Chronometer (CC) + Pantheon + SH0ES, and (ii) CC + Pantheon + SH0ES + SDSS BAO + DESI BAO. By employing a comprehensive data analysis technique, we compare the evidence of our models to flat CDM. Based on the Akaike Information Criterion (AIC) and Bayesian Information Criterion (BIC), one of the models emerges as a robust alternative to CDM when considering the joint data sets.
期刊介绍:
The Chinese Journal of Physics publishes important advances in various branches in physics, including statistical and biophysical physics, condensed matter physics, atomic/molecular physics, optics, particle physics and nuclear physics.
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