Literatura académica sobre el tema "Modelos de bianchi"
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Artículos de revistas sobre el tema "Modelos de bianchi"
Chirde, Dr Vilas R. y Vijay P. Kadam. "Bianchi Type Bulk Viscous String Cosmological Models in Modified Theory of Gravity". International Journal of Scientific Research 3, n.º 5 (1 de junio de 2012): 85–90. http://dx.doi.org/10.15373/22778179/may2014/28.
Texto completoSZYDŁOWSKI, MAREK y ADAM KRAWIEC. "BIANCHI COSMOLOGIES AS DYNAMICAL SYSTEMS WITHOUT THE CONSTRAINT". International Journal of Modern Physics A 15, n.º 17 (10 de julio de 2000): 2771–91. http://dx.doi.org/10.1142/s0217751x00001269.
Texto completoSPINDEL, PHILIPPE. "COSMOLOGICAL MODELS IN THE R2 THEORY OF GRAVITY". International Journal of Modern Physics D 03, n.º 01 (marzo de 1994): 273–76. http://dx.doi.org/10.1142/s0218271894000447.
Texto completoDI PIETRO, ELISA y JACQUES DEMARET. "SCALE FACTOR DUALITY IN STRING BIANCHI COSMOLOGIES". International Journal of Modern Physics D 08, n.º 03 (junio de 1999): 349–61. http://dx.doi.org/10.1142/s0218271899000262.
Texto completoRezaei-Aghdam, A. "Bianchi bialgebras and WZW models". Surveys in High Energy Physics 17, n.º 1-4 (enero de 2002): 173–81. http://dx.doi.org/10.1080/0142241021000058109.
Texto completoBelinchón, J. A. "Scalar-Tensor Bianchi VI Models". Journal of Gravity 2013 (5 de junio de 2013): 1–11. http://dx.doi.org/10.1155/2013/491905.
Texto completoFujiwara, Y., H. Ishihara y H. Kodama. "Comments on closed Bianchi models". Classical and Quantum Gravity 10, n.º 5 (1 de mayo de 1993): 859–67. http://dx.doi.org/10.1088/0264-9381/10/5/006.
Texto completoSklavenites, D. "Geodesic Bianchi type cosmological models". General Relativity and Gravitation 24, n.º 1 (enero de 1992): 47–58. http://dx.doi.org/10.1007/bf00756873.
Texto completoAsano, Masako, Masayuki Tanimoto y Noriaki Yoshino. "Supersymmetric Bianchi class A models". Physics Letters B 314, n.º 3-4 (septiembre de 1993): 303–7. http://dx.doi.org/10.1016/0370-2693(93)91240-n.
Texto completoPanov, V. F. y O. V. Sandakova. "The Bianchi IX cosmological models". Russian Physics Journal 54, n.º 3 (agosto de 2011): 354–59. http://dx.doi.org/10.1007/s11182-011-9621-4.
Texto completoTesis sobre el tema "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.
Texto completoMade 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.
Texto completoCheng, A. D. Y. "Supersymmetric quantum Bianchi models". Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.597576.
Texto completoFriedrichsen, 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.
Texto completoMatsas, George Emanuel Avraam [UNESP]. "Estudo do universo primitivo no modelo bianchi IX". Universidade Estadual Paulista (UNESP), 1988. http://hdl.handle.net/11449/132638.
Texto completoMatsas, George Emanuel Avraam. "Estudo do universo primitivo no modelo bianchi IX /". São Paulo : [s.n.], 1988. http://hdl.handle.net/11449/132638.
Texto completoYearsley, 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.
Texto completoHervik, 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.
Texto completoNunes, 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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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.
Texto completoThe 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.
Capítulos de libros sobre el tema "Modelos de bianchi"
Liebscher, Stefan. "Application: Cosmological Models of Bianchi Type, the Tumbling Universe". En Bifurcation without Parameters, 115–18. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-10777-6_13.
Texto completoKrasiński, Andrzej. "The Ultimate Extension of the Bianchi Classification for Rotating Dust Models". En 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.
Texto completoBurd, Adrian. "How Can You Tell if the Bianchi IX Models Are Chaotic?" En Deterministic Chaos in General Relativity, 345–54. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4757-9993-4_20.
Texto completoWainwright, J. "Bianchi cosmologies: non–tilted class A models". En Dynamical Systems in Cosmology, 123–52. Cambridge University Press, 1997. http://dx.doi.org/10.1017/cbo9780511524660.008.
Texto completoHewitt, C. G. y J. Wainwright. "Bianchi cosmologies: non–tilted class B models". En Dynamical Systems in Cosmology, 153–69. Cambridge University Press, 1997. http://dx.doi.org/10.1017/cbo9780511524660.009.
Texto completoMcKercher, Bob y Bruce Prideaux. "The Political Economy of Tourism and Approaches to Forecasting". En Tourism Theories, Concepts and Models. Goodfellow Publishers, 2020. http://dx.doi.org/10.23912/9781911635352-4726.
Texto completoSocorro, J., Paulo A., Abraham Espinoza-Garcia, Luis O. y Priscila Romero. "Cosmological Bianchi Class A Models in Sáez-Ballester Theory". En Aspects of Today's Cosmology. InTech, 2011. http://dx.doi.org/10.5772/24088.
Texto completoActas de conferencias sobre el tema "Modelos de bianchi"
Berköz, G. y Ö Sevinç. "Bianchi Models with Chaplygin Gas". En SIXTH INTERNATIONAL CONFERENCE OF THE BALKAN PHYSICAL UNION. AIP, 2007. http://dx.doi.org/10.1063/1.2733076.
Texto completoBRADLEY, M. y D. ERIKSSON. "ROTATING COSMOLOGICAL MODELS OF BIANCHI TYPE V". En 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.
Texto completoSocorro, J. y Abraham Espinoza-García. "Bianchi class A models in Sàez-Ballester's theory". En IX WORKSHOP OF THE GRAVITATION AND MATHEMATICAL PHYSICS DIVISION OF THE MEXICAN PHYSICAL SOCIETY. AIP, 2012. http://dx.doi.org/10.1063/1.4748541.
Texto completoAmirhashchi, Hassan, Hishamuddin Zainuddin, Jumiah Hassan, Halimah Mohamed Kamari, A. K. Yahya y Shah Alam. "Bianchi Type III String Cosmological Models for Perfect Fluid Distribution in General Relativity". En PROGRESS OF PHYSICS RESEARCH IN MALAYSIA: PERFIK2009. AIP, 2010. http://dx.doi.org/10.1063/1.3469655.
Texto completoInformes sobre el tema "Modelos de bianchi"
Turner, M. S. y L. Widrow. Bianchi models and new inflation. Office of Scientific and Technical Information (OSTI), marzo de 1986. http://dx.doi.org/10.2172/5801979.
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