首页 > 最新文献

Astronomy & Astrophysics eJournal最新文献

英文 中文
Quasi-Liquid Crystals of Electrons and Positrons 电子和正电子的准液晶
Pub Date : 2021-08-19 DOI: 10.31219/osf.io/es6y3
Gianluigi Zangari del Balzo
A new statistical analysis of infrared synchrotron radiation (IR-SR)emitted by electrons and positrons at DAΦNE Φ-Factory (Frascati) and Bessy 2(Berlin) reveals inner degrees of freedom within bunches of relativistic particles.We thus propose a new methodological approach towards a theory that describesthe passage from a phase of maximum symmetry to a condensed phase having thequalities of a nematic mesophase of positrons and electrons.
对在DAΦNE Φ-Factory(弗拉斯卡蒂)和Bessy 2(柏林)发射的电子和正电子发出的红外同步辐射(IR-SR)进行了一项新的统计分析,揭示了相对论粒子束内部的自由度。因此,我们提出了一种新的方法方法来描述从最大对称相到具有正电子和电子向列中间相质量的凝聚相的过渡理论。
{"title":"Quasi-Liquid Crystals of Electrons and Positrons","authors":"Gianluigi Zangari del Balzo","doi":"10.31219/osf.io/es6y3","DOIUrl":"https://doi.org/10.31219/osf.io/es6y3","url":null,"abstract":"A new statistical analysis of infrared synchrotron radiation (IR-SR)emitted by electrons and positrons at DAΦNE Φ-Factory (Frascati) and Bessy 2(Berlin) reveals inner degrees of freedom within bunches of relativistic particles.We thus propose a new methodological approach towards a theory that describesthe passage from a phase of maximum symmetry to a condensed phase having thequalities of a nematic mesophase of positrons and electrons.","PeriodicalId":153372,"journal":{"name":"Astronomy & Astrophysics eJournal","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125992052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evidence for loop quantum gravity 环量子引力的证据
Pub Date : 2021-07-24 DOI: 10.2139/ssrn.3892773
Wen-Xiang Chen
This article points out that when the boundary condition $frac{T}{T_{c}}=z$ (when z is a complex number) is preset, bosons can produce Bose condensation without an energy layer. Under Bose condensation, incident waves may condense in various black holes in the theory of loop quantum gravity. At that time, potential barriers will be generated near the horizon of various black holes, and we believe that these black holes will also produce super-radiation phenomena (this article uses the natural unit system). We assume that the simple loop quantum gravity theoretical model that can produce superradiation phenomena that does not exist in the traditional theory provides experimental evidence for loop quantum gravity.
本文指出,当预设边界条件$frac{T}{T_{c}}=z$(当z为复数时)时,玻色子可以产生无能量层的玻色凝聚。在玻色凝聚下,在环量子引力理论中,入射波可以在各种黑洞中凝聚。届时,在各种黑洞的视界附近会产生势垒,我们认为这些黑洞也会产生超辐射现象(本文采用自然单位制)。我们假设可以产生传统理论中不存在的超辐射现象的简单环量子引力理论模型为环量子引力提供了实验证据。
{"title":"Evidence for loop quantum gravity","authors":"Wen-Xiang Chen","doi":"10.2139/ssrn.3892773","DOIUrl":"https://doi.org/10.2139/ssrn.3892773","url":null,"abstract":"This article points out that when the boundary condition $frac{T}{T_{c}}=z$ (when z is a complex number) is preset, bosons can produce Bose condensation without an energy layer. Under Bose condensation, incident waves may condense in various black holes in the theory of loop quantum gravity. At that time, potential barriers will be generated near the horizon of various black holes, and we believe that these black holes will also produce super-radiation phenomena (this article uses the natural unit system). We assume that the simple loop quantum gravity theoretical model that can produce superradiation phenomena that does not exist in the traditional theory provides experimental evidence for loop quantum gravity.","PeriodicalId":153372,"journal":{"name":"Astronomy & Astrophysics eJournal","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126940679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hawking Radiation is Probably a Type of Superradiation 霍金辐射可能是一种超辐射
Pub Date : 2021-01-18 DOI: 10.2139/ssrn.3768144
Wen-Xiang Chen
In this article, it mainly discusses that when the scalar field equation presets boundary conditions, the effective action form of Hawking radiation is consistent with the effective action form of superradiation. From this I conclude that Hawking radiation may be a form of superradiation.
本文主要讨论在标量场方程预设边界条件时,霍金辐射的有效作用形式与超辐射的有效作用形式是一致的。由此我得出结论,霍金辐射可能是超辐射的一种形式。
{"title":"Hawking Radiation is Probably a Type of Superradiation","authors":"Wen-Xiang Chen","doi":"10.2139/ssrn.3768144","DOIUrl":"https://doi.org/10.2139/ssrn.3768144","url":null,"abstract":"In this article, it mainly discusses that when the scalar field equation presets boundary conditions, the effective action form of Hawking radiation is consistent with the effective action form of superradiation. From this I conclude that Hawking radiation may be a form of superradiation.","PeriodicalId":153372,"journal":{"name":"Astronomy & Astrophysics eJournal","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121650957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Humans beyond Earth 地球外的人类
Pub Date : 2019-08-20 DOI: 10.2139/ssrn.3459688
Ni-A Kwon, D. Klein
Humans have been a wildly curious species for millennia. From traveling across unmapped oceans to the first lunar steps, mankind had the ambition to explore dangerous, uncharted destinations. In 1966, the NASA budget was 4.41% of the Federal budget. Fifty years later, NASA’s budget was 0.50% of the Federal budget. While there is still strong interest in intermediate space, that's because it’s in the comfort zone of commercial interests with profit motives. We as a species need to resist this sole motivation. Many companies and governments won’t invest in a manned expedition to Mars since the profits would take decades to manifest (if there are any profits at all). However, recently a new breed of billionaires, including Elon Musk and Jeff Bezos, realized the importance of investing in a Mars mission because of the positive impact for humanity later. Making a habitable colony for humans on Mars will be extraordinarily difficult - Mars is a hostile environment, but over time, impossible journeys evolve from difficult challenges to success. A trip to Mars would represent a leap in our maturity, a revitalization of the human spirit that charges into the unknown to understand and use it. This paper will research the challenges of getting to Mars and why we should go there. Who knows, we may find life under the dunes of Mars and discover we aren't the only ones.
几千年来,人类一直是一个充满好奇心的物种。从穿越未知的海洋到第一次登月,人类都有探索危险、未知目的地的雄心。1966年,NASA的预算是联邦预算的4.41%。50年后,NASA的预算是联邦预算的0.50%。虽然人们对中间空间仍然有浓厚的兴趣,但那是因为它处于具有盈利动机的商业利益的舒适区。作为一个物种,我们需要抵制这种唯一的动机。许多公司和政府不会投资载人火星探险,因为利润需要几十年才能显现(如果有任何利润的话)。然而,最近,包括埃隆·马斯克和杰夫·贝佐斯在内的新一代亿万富翁意识到投资火星任务的重要性,因为它会对人类产生积极的影响。在火星上为人类建造一个可居住的殖民地将是非常困难的——火星是一个充满敌意的环境,但随着时间的推移,不可能的旅程从困难的挑战演变成成功。去火星旅行代表着我们成熟的飞跃,代表着人类精神的复兴,代表着人类冲向未知,去理解和利用它。这篇论文将研究到达火星的挑战以及我们为什么要去那里。谁知道呢,我们可能会在火星的沙丘下发现生命,并发现我们不是唯一的生命。
{"title":"Humans beyond Earth","authors":"Ni-A Kwon, D. Klein","doi":"10.2139/ssrn.3459688","DOIUrl":"https://doi.org/10.2139/ssrn.3459688","url":null,"abstract":"Humans have been a wildly curious species for millennia. From traveling across unmapped oceans to the first lunar steps, mankind had the ambition to explore dangerous, uncharted destinations. In 1966, the NASA budget was 4.41% of the Federal budget. Fifty years later, NASA’s budget was 0.50% of the Federal budget. While there is still strong interest in intermediate space, that's because it’s in the comfort zone of commercial interests with profit motives. We as a species need to resist this sole motivation. Many companies and governments won’t invest in a manned expedition to Mars since the profits would take decades to manifest (if there are any profits at all). However, recently a new breed of billionaires, including Elon Musk and Jeff Bezos, realized the importance of investing in a Mars mission because of the positive impact for humanity later. Making a habitable colony for humans on Mars will be extraordinarily difficult - Mars is a hostile environment, but over time, impossible journeys evolve from difficult challenges to success. A trip to Mars would represent a leap in our maturity, a revitalization of the human spirit that charges into the unknown to understand and use it. This paper will research the challenges of getting to Mars and why we should go there. Who knows, we may find life under the dunes of Mars and discover we aren't the only ones.","PeriodicalId":153372,"journal":{"name":"Astronomy & Astrophysics eJournal","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123880997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Measuring Distances in Space 在空间中测量距离
Pub Date : 2013-02-15 DOI: 10.2139/ssrn.2355164
Manahel Thabet
Determining distances in space is a technical phenomenon; astronomers are trying to come up with a correct way to do it. It is not easy for most of us to imagine the truly immense scale of the universe. “Scale,” in this case, refers to the size of an object compared with its surroundings or another object (McGaugh). Distances in the space are vast from one celestial body to another; for instance, it takes a light signal 10.5 years to travel to the nearest star that has planets (Bonnet, 1992). The fact that light travels 30000 times faster than any fastest rockets renders human beings unable to reach to some planets even if they travelled their entire lifetime. To determine space distance, several methods with different variations are used or have been proposed. These methods, unfortunately, have faults. In this research, I clearly explain several of these methods and their faults and errors. We will also observe the universe as being three-dimensional and flat as explained in Euclidean: Euclidean means that all the geometry and lines (that are taught in mathematics and physics) properties applies. Measuring distance from earth to celestial bodies like star, sun and moon help astronauts to determine the size of the universe; also it helps to estimate the age of universe. Therefore it is important to use correct methods in estimating space distance.
确定空间中的距离是一种技术现象;天文学家正试图想出一个正确的方法。对我们大多数人来说,想象宇宙真正的浩瀚是不容易的。在这种情况下,“比例”指的是一个物体与其周围环境或另一个物体相比的大小(McGaugh)。在太空中,从一个天体到另一个天体的距离是巨大的;例如,光信号需要10.5年才能到达最近的有行星的恒星(Bonnet, 1992)。光的传播速度比任何最快的火箭都快3万倍,这一事实使得人类即使一生都在旅行,也无法到达某些行星。为了确定空间距离,使用或提出了几种不同变化的方法。不幸的是,这些方法都有缺陷。在本研究中,我对其中的几种方法及其缺陷和错误进行了明确的说明。我们还将观察到欧几里得所解释的宇宙是三维的、平坦的:欧几里得意味着(数学和物理中所教授的)所有几何和线的性质都适用。测量地球到恒星、太阳和月亮等天体的距离有助于宇航员确定宇宙的大小;它还有助于估计宇宙的年龄。因此,使用正确的方法来估计空间距离是非常重要的。
{"title":"Measuring Distances in Space","authors":"Manahel Thabet","doi":"10.2139/ssrn.2355164","DOIUrl":"https://doi.org/10.2139/ssrn.2355164","url":null,"abstract":"Determining distances in space is a technical phenomenon; astronomers are trying to come up with a correct way to do it. It is not easy for most of us to imagine the truly immense scale of the universe. “Scale,” in this case, refers to the size of an object compared with its surroundings or another object (McGaugh). Distances in the space are vast from one celestial body to another; for instance, it takes a light signal 10.5 years to travel to the nearest star that has planets (Bonnet, 1992). The fact that light travels 30000 times faster than any fastest rockets renders human beings unable to reach to some planets even if they travelled their entire lifetime. To determine space distance, several methods with different variations are used or have been proposed. These methods, unfortunately, have faults. In this research, I clearly explain several of these methods and their faults and errors. We will also observe the universe as being three-dimensional and flat as explained in Euclidean: Euclidean means that all the geometry and lines (that are taught in mathematics and physics) properties applies. Measuring distance from earth to celestial bodies like star, sun and moon help astronauts to determine the size of the universe; also it helps to estimate the age of universe. Therefore it is important to use correct methods in estimating space distance.","PeriodicalId":153372,"journal":{"name":"Astronomy & Astrophysics eJournal","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123746450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Astronomy & Astrophysics eJournal
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1