Estudos acerca de duas formulações da cosmologia Newtoniana: discreta e contínua
| Ano de defesa: | 2016 |
|---|---|
| Autor(a) principal: | |
| Orientador(a): | |
| Banca de defesa: | |
| Tipo de documento: | Dissertação |
| Tipo de acesso: | Acesso aberto |
| Idioma: | por |
| Instituição de defesa: |
Universidade Federal da Paraíba
|
| Programa de Pós-Graduação: |
Programa de Pós-Graduação em Física
|
| Departamento: |
Física
|
| País: |
Brasil
|
| Palavras-chave em Português: | |
| Palavras-chave em Inglês: | |
| Área do conhecimento CNPq: | |
| Link de acesso: | https://repositorio.ufpb.br/jspui/handle/tede/9527 |
Resumo: | We considered the discrete approach to Newtonian cosmology presented by Ellis and Gibbons in a recent paper, and generalize this to the continuum limit. The results are obtained using the Newton's laws for particles interacting gravitationally, which are moving homothetically, with with their comoving positions constituting a central configuration. It requines no use of the fluid mechanics, but just a correspondence between the quantities which appear in the approach of Ellis and Gibbons and their generalizations for a system with high density, but with a finite number of particles. The solutions of the equation for the scale factor are presented, taking into account the presence of a term associated with the cosmological constant. We briefly present the relativistic cosmology and compare with Newtonian cosmology. |
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2017-09-13T13:50:59Z2018-07-21T00:09:24Z2018-07-21T00:09:24Z2016-07-29NASCIMENTO, Francinaldo Florencio do. Estudos acerca de duas formulações da cosmologia Newtoniana: discreta e contínua. 2016. 91 f. Dissertação (Mestrado em Física) - Universidade Federal da Paraíba, João Pessoa, 2016.https://repositorio.ufpb.br/jspui/handle/tede/9527We considered the discrete approach to Newtonian cosmology presented by Ellis and Gibbons in a recent paper, and generalize this to the continuum limit. The results are obtained using the Newton's laws for particles interacting gravitationally, which are moving homothetically, with with their comoving positions constituting a central configuration. It requines no use of the fluid mechanics, but just a correspondence between the quantities which appear in the approach of Ellis and Gibbons and their generalizations for a system with high density, but with a finite number of particles. The solutions of the equation for the scale factor are presented, taking into account the presence of a term associated with the cosmological constant. We briefly present the relativistic cosmology and compare with Newtonian cosmology.Consideramos a formulagao discreta da cosmologia Newtoniana adotada por Ellis e Gibbons, em artigo recente, e fazemos uma generalizagao para o limite do continuo. Os resultados sao obtidos com o use das leis de Newton para particulas que interagem gravitacionalmente, que se movem homoteticamente, com suas coordenadas comOveis constituindo-se uma configuragao central. Nao foi necessario o use da mecanica dos fluidos, mas tao somente, uma correspondencia direta entre as grandezas discretas da formulagao de Ellis e Gibbons e suas generalizagoes para um sistema muito denso, com um nilmero finito de particulas. Sao apresentadas solugoes da equagao para o fator de escala, considerando a presenga do termo associado a constante cosmolOgica. E feita uma breve apresentagao da cosmologia Einsteiniana e uma comparagao com a cosmologia Newtoniana.Submitted by Vasti Diniz (vastijpa@hotmail.com) on 2017-09-13T13:50:59Z No. of bitstreams: 1 arquivototal.pdf: 2320909 bytes, checksum: 25cc6b6504385f6f69412717c2952be1 (MD5)Made available in DSpace on 2017-09-13T13:50:59Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 2320909 bytes, checksum: 25cc6b6504385f6f69412717c2952be1 (MD5) Previous issue date: 2016-07-29Made available in DSpace on 2018-07-21T00:09:24Z (GMT). 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| dc.title.por.fl_str_mv |
Estudos acerca de duas formulações da cosmologia Newtoniana: discreta e contínua |
| title |
Estudos acerca de duas formulações da cosmologia Newtoniana: discreta e contínua |
| spellingShingle |
Estudos acerca de duas formulações da cosmologia Newtoniana: discreta e contínua Nascimento, Francinaldo Florencio do Cosmologia Newtoniana Constante cosmológica Cosmologia Einsteiniana Newtonian cosmology Cosmological constant Relativistic cosmology CIENCIAS EXATAS E DA TERRA::FISICA |
| title_short |
Estudos acerca de duas formulações da cosmologia Newtoniana: discreta e contínua |
| title_full |
Estudos acerca de duas formulações da cosmologia Newtoniana: discreta e contínua |
| title_fullStr |
Estudos acerca de duas formulações da cosmologia Newtoniana: discreta e contínua |
| title_full_unstemmed |
Estudos acerca de duas formulações da cosmologia Newtoniana: discreta e contínua |
| title_sort |
Estudos acerca de duas formulações da cosmologia Newtoniana: discreta e contínua |
| author |
Nascimento, Francinaldo Florencio do |
| author_facet |
Nascimento, Francinaldo Florencio do |
| author_role |
author |
| dc.contributor.advisor1.fl_str_mv |
Bezerra, Valdir Barbosa |
| dc.contributor.advisor1ID.fl_str_mv |
109.992.054-04 |
| dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/1945428104771588 |
| dc.contributor.authorID.fl_str_mv |
020.594.313-45 |
| dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/4532254534388109 |
| dc.contributor.author.fl_str_mv |
Nascimento, Francinaldo Florencio do |
| contributor_str_mv |
Bezerra, Valdir Barbosa |
| dc.subject.por.fl_str_mv |
Cosmologia Newtoniana Constante cosmológica Cosmologia Einsteiniana |
| topic |
Cosmologia Newtoniana Constante cosmológica Cosmologia Einsteiniana Newtonian cosmology Cosmological constant Relativistic cosmology CIENCIAS EXATAS E DA TERRA::FISICA |
| dc.subject.eng.fl_str_mv |
Newtonian cosmology Cosmological constant Relativistic cosmology |
| dc.subject.cnpq.fl_str_mv |
CIENCIAS EXATAS E DA TERRA::FISICA |
| description |
We considered the discrete approach to Newtonian cosmology presented by Ellis and Gibbons in a recent paper, and generalize this to the continuum limit. The results are obtained using the Newton's laws for particles interacting gravitationally, which are moving homothetically, with with their comoving positions constituting a central configuration. It requines no use of the fluid mechanics, but just a correspondence between the quantities which appear in the approach of Ellis and Gibbons and their generalizations for a system with high density, but with a finite number of particles. The solutions of the equation for the scale factor are presented, taking into account the presence of a term associated with the cosmological constant. We briefly present the relativistic cosmology and compare with Newtonian cosmology. |
| publishDate |
2016 |
| dc.date.issued.fl_str_mv |
2016-07-29 |
| dc.date.accessioned.fl_str_mv |
2017-09-13T13:50:59Z 2018-07-21T00:09:24Z |
| dc.date.available.fl_str_mv |
2018-07-21T00:09:24Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/masterThesis |
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masterThesis |
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publishedVersion |
| dc.identifier.citation.fl_str_mv |
NASCIMENTO, Francinaldo Florencio do. Estudos acerca de duas formulações da cosmologia Newtoniana: discreta e contínua. 2016. 91 f. Dissertação (Mestrado em Física) - Universidade Federal da Paraíba, João Pessoa, 2016. |
| dc.identifier.uri.fl_str_mv |
https://repositorio.ufpb.br/jspui/handle/tede/9527 |
| identifier_str_mv |
NASCIMENTO, Francinaldo Florencio do. Estudos acerca de duas formulações da cosmologia Newtoniana: discreta e contínua. 2016. 91 f. Dissertação (Mestrado em Física) - Universidade Federal da Paraíba, João Pessoa, 2016. |
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por |
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por |
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Universidade Federal da Paraíba |
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Programa de Pós-Graduação em Física |
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UFPB |
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Brasil |
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Física |
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Universidade Federal da Paraíba |
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