Academic literature on the topic 'Modelos de bianchi'
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Journal articles on the topic "Modelos de bianchi"
Chirde, Dr Vilas R., and Vijay P. Kadam. "Bianchi Type Bulk Viscous String Cosmological Models in Modified Theory of Gravity." International Journal of Scientific Research 3, no. 5 (June 1, 2012): 85–90. http://dx.doi.org/10.15373/22778179/may2014/28.
Full textSZYDŁOWSKI, MAREK, and ADAM KRAWIEC. "BIANCHI COSMOLOGIES AS DYNAMICAL SYSTEMS WITHOUT THE CONSTRAINT." International Journal of Modern Physics A 15, no. 17 (July 10, 2000): 2771–91. http://dx.doi.org/10.1142/s0217751x00001269.
Full textSPINDEL, PHILIPPE. "COSMOLOGICAL MODELS IN THE R2 THEORY OF GRAVITY." International Journal of Modern Physics D 03, no. 01 (March 1994): 273–76. http://dx.doi.org/10.1142/s0218271894000447.
Full textDI PIETRO, ELISA, and JACQUES DEMARET. "SCALE FACTOR DUALITY IN STRING BIANCHI COSMOLOGIES." International Journal of Modern Physics D 08, no. 03 (June 1999): 349–61. http://dx.doi.org/10.1142/s0218271899000262.
Full textRezaei-Aghdam, A. "Bianchi bialgebras and WZW models." Surveys in High Energy Physics 17, no. 1-4 (January 2002): 173–81. http://dx.doi.org/10.1080/0142241021000058109.
Full textBelinchón, J. A. "Scalar-Tensor Bianchi VI Models." Journal of Gravity 2013 (June 5, 2013): 1–11. http://dx.doi.org/10.1155/2013/491905.
Full textFujiwara, Y., H. Ishihara, and H. Kodama. "Comments on closed Bianchi models." Classical and Quantum Gravity 10, no. 5 (May 1, 1993): 859–67. http://dx.doi.org/10.1088/0264-9381/10/5/006.
Full textSklavenites, D. "Geodesic Bianchi type cosmological models." General Relativity and Gravitation 24, no. 1 (January 1992): 47–58. http://dx.doi.org/10.1007/bf00756873.
Full textAsano, Masako, Masayuki Tanimoto, and Noriaki Yoshino. "Supersymmetric Bianchi class A models." Physics Letters B 314, no. 3-4 (September 1993): 303–7. http://dx.doi.org/10.1016/0370-2693(93)91240-n.
Full textPanov, V. F., and O. V. Sandakova. "The Bianchi IX cosmological models." Russian Physics Journal 54, no. 3 (August 2011): 354–59. http://dx.doi.org/10.1007/s11182-011-9621-4.
Full textDissertations / Theses on the topic "Modelos de bianchi"
MATEUS, Dairo Antonio Cuellar. "Considerações Sobre a Anisotropia em Modelos Bianchi Tipo I." reponame:Repositório Institucional da UNIFEI, 2018. http://repositorio.unifei.edu.br/xmlui/handle/123456789/1149.
Full textMade available in DSpace on 2018-03-14T15:13:38Z (GMT). No. of bitstreams: 1 dissertacao_mateus_2018.pdf: 847341 bytes, checksum: 0f440949b959493c6f26856e0f892577 (MD5) Previous issue date: 2018-02
Neste trabalho apresentamos uma introdução matemática ao estudo de modelos cosmológicos espacialmente homogêneos, em especial aos modelos Bianchi tipo I, que são espacialmente planos. Neste caso analisamos como a geometria espacial evolui sob certas condições da anisotropia. Ao fi nal analisamos a possibilidade destes modelos substituirem o modelo Robertson-Walker plano com constante cosmológica.
Fay, Stéphane. "Cosmologies spatialement homogènes en théories tenseur-scalaires." Phd thesis, Université Paris-Diderot - Paris VII, 2004. http://tel.archives-ouvertes.fr/tel-00008063.
Full textCheng, A. D. Y. "Supersymmetric quantum Bianchi models." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.597576.
Full textFriedrichsen, James Edward. "Quantization of Bianchi type cosmological models /." Full text (PDF) from UMI/Dissertation Abstracts International, 2000. http://wwwlib.umi.com/cr/utexas/fullcit?p3004268.
Full textMatsas, George Emanuel Avraam [UNESP]. "Estudo do universo primitivo no modelo bianchi IX." Universidade Estadual Paulista (UNESP), 1988. http://hdl.handle.net/11449/132638.
Full textMatsas, George Emanuel Avraam. "Estudo do universo primitivo no modelo bianchi IX /." São Paulo : [s.n.], 1988. http://hdl.handle.net/11449/132638.
Full textYearsley, J. M. "Anisotropic cosmologies and the role of matter." Thesis, University of Sussex, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259719.
Full textHervik, Sigbjørn. "Mathematical cosmology : Bianchi models, asymptotics and extra dimensions." Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.616093.
Full textNunes, Thiago Crisóstomo Carlos. "Relevância da dimensionalidade no modelo de Bianconi-Barabási." PROGRAMA DE PÓS-GRADUAÇÃO EM FÍSICA, 2017. https://repositorio.ufrn.br/jspui/handle/123456789/25467.
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Made available in DSpace on 2018-06-19T20:45:08Z (GMT). No. of bitstreams: 1 ThiagoCrisostomoCarlosNunes_TESE.pdf: 12472846 bytes, checksum: 1798e6ecdabae3a96892d8b6260e77c0 (MD5) Previous issue date: 2017-09-08
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Redes sem escala são bastante populares hoje em dia, uma vez que muitos sistemas estão bem representados por tais estruturas. Para estudar esses sistemas, foram propostos vários modelos. No entanto, a maioria deles não levam em conta a distância Euclidiana nó à nó, ou seja, a distância geográ ca. Em redes reais, a distância entre os sítios pode ser muito relevante, por exemplo, os casos em que se pretende minimizar custos. Neste cenário, estudamos o papel da dimensionalidade d no Modelo de Bianconi-Barabási com um crescimento e ligação preferencial envolvendo distâncias Euclidianas. A ligação preferencial neste modelo segue a regra Πi ∝ ηiki/rαA ij (1 ≤ i < j; αA ≥ 0), onde ηi caracteriza a qualidade do i-ésimo sítio e é escolhido aleatoriamente dentro do intervalo (0, 1]. Veri camos que a distribuição de grau P(k) para as dimensões d = 1, 2, 3, 4 são bem ajustadas por P(k) ∝ e −k/κ q , onde e −k/κ q é a função q-exponencial que surge naturalmente da Mecânica Estatística não-extensiva de Tsallis. Determinamos o índice q e κ como funções das quantidades αA e d e veri camos numericamente que ambos apresentam um comportamento universal em relação à variável αA/d. O mesmo comportamento também foi exibido pelo expoente dinâmico β que está associado a taxa que determinado sítio tem em receber ligações.
Scale-free networks are quite popular nowadays since many systems are well represented by such structures. In order to study these systems, several models were proposed. However, most of them do not take into account the node-to-node Euclidean distance, i.e., the geographical distance. In real networks, the distance between sites can be very relevant, e.g., those cases where it is intended to minimize costs. Within this scenario, we studied the role of dimensionality d in the Bianconi-Barabási model with a preferential attachment growth involving Euclidean distances. The preferential attachment in this model follows the rule Πi ∝ ηiki/rαA ij (1 ≤ i < j; αA ≥ 0), where ηi characterizes the tness of the i-th site and is randomly chosen within the (0, 1] interval. We veri ed that the degree distribution P(k) for dimensions d = 1, 2, 3, 4 are well tted by P(k) ∝ e −k/κ q , where e −k/κ q is the q-exponential function naturally emerging within nonextensive statistical mechanics. We determine the index q and κ as functions of the quantities αA and d, and numerically verify that both present a universal behavior with respect to the scaled variable αA/d. The same behavior also has been displayed by the dynamical β exponent which characterizes the steadily growing number of links of a given site.
Pereyra, Pablo Hernán. "Soluções não-planas no modelo cosmológico Bianchi tipo V na teoria 5D-Espaço-Tempo-Massa." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 1999. http://hdl.handle.net/10183/127585.
Full textThe scale invariant gravitational theories propose the time variation either in the gravitational constant or in the rest mass of the objects that constitute the universe. By this way the intensity of the gravitational interaction varies as well, changing accordingly the behavior of the universe. Several theories have been proposed in the literature, however most of them have been discharged due to drawbacks in thecnicalities or lack of agreement with observational data. The work conducted here takes into account a 5-dimensional theory called SpaceTime- Mass, which proposes that the rest mass be na extensible quantity that change with time. Severa! investigations have been done so far with this theory, some o f them including cosmological studies. Here we will investigate the 5D extension of the Bianchi type V cosmological model, which is one of the most important model of the universe. Two metrics are proposed and the solution of the corresponding 5D-Spae-Time-Mass field equations are found. Both solutions shown to be non-flat spaces. The singularity behavior of the metric and curvature were done, the induced energy-momentum tensor for both metrics were determined and their properties were investigated. Through the analysis of the Kretschmann tensor, it has been shown that there is no effective singularity in the space, which suggest that there is a finite distribution of energy due to the inclusion of the rest mass variable.
Book chapters on the topic "Modelos de bianchi"
Liebscher, Stefan. "Application: Cosmological Models of Bianchi Type, the Tumbling Universe." In Bifurcation without Parameters, 115–18. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-10777-6_13.
Full textKrasiński, Andrzej. "The Ultimate Extension of the Bianchi Classification for Rotating Dust Models." In On Einstein’s Path, 283–98. New York, NY: Springer New York, 1999. http://dx.doi.org/10.1007/978-1-4612-1422-9_20.
Full textBurd, Adrian. "How Can You Tell if the Bianchi IX Models Are Chaotic?" In Deterministic Chaos in General Relativity, 345–54. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4757-9993-4_20.
Full textWainwright, J. "Bianchi cosmologies: non–tilted class A models." In Dynamical Systems in Cosmology, 123–52. Cambridge University Press, 1997. http://dx.doi.org/10.1017/cbo9780511524660.008.
Full textHewitt, C. G., and J. Wainwright. "Bianchi cosmologies: non–tilted class B models." In Dynamical Systems in Cosmology, 153–69. Cambridge University Press, 1997. http://dx.doi.org/10.1017/cbo9780511524660.009.
Full textMcKercher, Bob, and Bruce Prideaux. "The Political Economy of Tourism and Approaches to Forecasting." In Tourism Theories, Concepts and Models. Goodfellow Publishers, 2020. http://dx.doi.org/10.23912/9781911635352-4726.
Full textSocorro, J., Paulo A., Abraham Espinoza-Garcia, Luis O., and Priscila Romero. "Cosmological Bianchi Class A Models in Sáez-Ballester Theory." In Aspects of Today's Cosmology. InTech, 2011. http://dx.doi.org/10.5772/24088.
Full textConference papers on the topic "Modelos de bianchi"
Berköz, G., and Ö Sevinç. "Bianchi Models with Chaplygin Gas." In SIXTH INTERNATIONAL CONFERENCE OF THE BALKAN PHYSICAL UNION. AIP, 2007. http://dx.doi.org/10.1063/1.2733076.
Full textBRADLEY, M., and D. ERIKSSON. "ROTATING COSMOLOGICAL MODELS OF BIANCHI TYPE V." In Proceedings of the MG10 Meeting held at Brazilian Center for Research in Physics (CBPF). World Scientific Publishing Company, 2006. http://dx.doi.org/10.1142/9789812704030_0246.
Full textSocorro, J., and Abraham Espinoza-García. "Bianchi class A models in Sàez-Ballester's theory." In IX WORKSHOP OF THE GRAVITATION AND MATHEMATICAL PHYSICS DIVISION OF THE MEXICAN PHYSICAL SOCIETY. AIP, 2012. http://dx.doi.org/10.1063/1.4748541.
Full textAmirhashchi, Hassan, Hishamuddin Zainuddin, Jumiah Hassan, Halimah Mohamed Kamari, A. K. Yahya, and Shah Alam. "Bianchi Type III String Cosmological Models for Perfect Fluid Distribution in General Relativity." In PROGRESS OF PHYSICS RESEARCH IN MALAYSIA: PERFIK2009. AIP, 2010. http://dx.doi.org/10.1063/1.3469655.
Full textReports on the topic "Modelos de bianchi"
Turner, M. S., and L. Widrow. Bianchi models and new inflation. Office of Scientific and Technical Information (OSTI), March 1986. http://dx.doi.org/10.2172/5801979.
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