Academic literature on the topic 'Bianchi Type I'

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Journal articles on the topic "Bianchi Type I"

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Batakis, Nikolaos A. "Bianchi-type string cosmology." Physics Letters B 353, no. 1 (1995): 39–45. http://dx.doi.org/10.1016/0370-2693(95)00582-6.

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Mohanty, G., S. K. Sahu, and P. K. Sahoo. "Mesonic Stiff Fluid Distribution in Bianchi Type Space-Times." Communications in Physics 14, no. 2 (2007): 84–89. http://dx.doi.org/10.15625/0868-3166/14/2/10698.

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The distributions of stiff perfect fluid coupled with zero mass scalar field in LRS Bianchi type-I & Bianchi type-V space times are investigated. Some physical and geometrical properties of the models are discussed.
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Purohit, Rakeshwar, Anita Bagora(Menaria), and Pushpa Bagora. "Bianchi Type IX Cosmological Model." INROADS- An International Journal of Jaipur National University 2, no. 1 (2013): 1. http://dx.doi.org/10.5958/j.2277-4912.2.1.001.

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Sandakova, Olga, and Elena Kuvshinova. "Bianchi Type V Cosmological Model." Вестник Пермского университета. Математика. Механика. Информатика, no. 2(57) (2022): 67–72. http://dx.doi.org/10.17072/1993-0550-2022-2-67-72.

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Within the framework of the general theory of relativity, a cosmological model of type V according to the Bianchi classification is constructed, where a non-interacting ideal fluid is used as a source of gravity. Two possible solutions have been found, the first of which describes the stage of early inflation of the evolution of the Universe.
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Graham, Robert. "Supersymmetric Bianchi type IX cosmology." Physical Review Letters 67, no. 11 (1991): 1381–83. http://dx.doi.org/10.1103/physrevlett.67.1381.

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Sklavenites, D. "Geodesic Bianchi type cosmological models." General Relativity and Gravitation 24, no. 1 (1992): 47–58. http://dx.doi.org/10.1007/bf00756873.

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Pant, D. N., and Sanjay Oli. "Bianchi type I string cosmologies." Pramana 60, no. 3 (2003): 433–41. http://dx.doi.org/10.1007/bf02706149.

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Hussain, Tahir, and Waqas Rahim. "Homothetic matter collineations of LRS Bianchi type I spacetimes." Modern Physics Letters A 32, no. 37 (2017): 1750197. http://dx.doi.org/10.1142/s0217732317501978.

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A complete classification of locally rotationally symmetric (LRS) Bianchi type I spacetimes via homothetic matter collineations (HMCs) is presented. For non-degenerate energy–momentum tensor, a general form of the vector field generating HMCs is found, subject to some integrability conditions. Solving the integrability conditions in different cases, it is found that the LRS Bianchi type I spacetimes admit 6-, 7-, 8-, 10- or 11-dimensional Lie algebra of HMCs. When the energy–momentum tensor is degenerate, two cases give 6 and 11 HMCs, while the remaining cases produce infinite number of HMCs.
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Saha, Bijan. "Spinor field in Bianchi type-IX space–time." Canadian Journal of Physics 96, no. 10 (2018): 1074–84. http://dx.doi.org/10.1139/cjp-2017-0711.

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Within the scope of Bianchi type-IX cosmological model we have studied the role of spinor field in the evolution of the Universe. It is found that unlike the diagonal Bianchi models in this case the components of energy–momentum tensor of spinor field along the principal axis are not the same (i.e., [Formula: see text]), even in the absence of spinor field nonlinearity. The presence of nontrivial non-diagonal components of energy–momentum tensor of the spinor field imposes severe restrictions both on geometry of space–time and on the spinor field itself. As a result the space–time turns out to
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CAPOZZIELLO, S., and R. DE RITIS. "COSMIC NO-HAIR THEOREM IN ANISOTROPIC, NONMINIMALLY COUPLED COSMOLOGIES." International Journal of Modern Physics D 05, no. 02 (1996): 209–15. http://dx.doi.org/10.1142/s021827189600014x.

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The cosmic no-hair theorem is generalized for homogeneous and anisotropic spacetimes in which a scalar field is nonminimally coupled to the geometry. The result is that the Wald proof also holds here for all Bianchi-type universes except Bianchi type-IX. However, considering the asymptotic behaviour of parameters, it is possible to find a class of models where the conjecture holds for Bianchi-IX too.
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Dissertations / Theses on the topic "Bianchi Type I"

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Friedrichsen, 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.

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Giani, Leonardo. "Bianchi type II cosmology in Hořava–Lifshitz gravity." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/10471/.

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In this work a Bianchi type II space-time within the framework of projectable Horava Lifshitz gravity was investigated; the resulting field equations in the infrared limit λ = 1 were analyzed qualitatively. We have found the analytical solutions for a toy model in which only the higher curvature terms cubic in the spatial Ricci tensor are considered. The resulting behavior is still described by a transition among two Kasner epochs, but we have found a different transformation law of the Kasner exponents with respect to the one of Einstein's general relativity.
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Lindblad, Petersen Oliver. "Bianchi type I solutions to Einstein's vacuum equations." Thesis, KTH, Matematik (Inst.), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-129194.

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A natural question in general relativity is whether there exist singularities, like the Big Bang and black holes, in the universe. Albert Einstein did not in the beginning believe that singularities in general relativity are generic ([2], [3]). He claimed that the existence of singularities is due to symmetry assumptions. The symmetry assumptions are usually spatial isotropy and spatial homogeneity. Spatial isotropy means intuitively that, for a xed time, universe looks the same at all points and in all spatial directions. In the present paper, we will show the following: If we solve Einstein'
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Sverin, Tomas. "Density Growth in Anisotropic Cosmologies of Bianchi Type I." Thesis, Umeå universitet, Institutionen för fysik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-58102.

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This work generalises earlier works on the growth of the density perturbations in Bianchi type I cosmologies filled with dust to include also the effects of pressure anda positive cosmological constant. For the analysis the 1+3 covariant split of space-time formalism is used. As the perturbative variables we use scalar quantities thatare zero on the background, and hence are gauge-invariant. These variables form acoupled closed system of first-order evolution equations, that is analysed numericallyand analytically. For short wavelengths an oscillatory behavior is obtained, whereasfor long wave
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Lindblad, Petersen Oliver. "The wave equation and redshift in Bianchi type I spacetimes." Thesis, KTH, Matematik (Avd.), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-151317.

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The thesis consists of two independent parts. In the first part, we show how the solution to the scalar wave equation on 3-torus-Bianchi type I spacetimes can be written as a Fourier decomposition. We present results on the behaviour of these Fourier modes and apply them to the case of 3-torus-Kasner spacetimes. In the second part, we first consider the solution to the scalar wave equation, with special initial data, as a model for light in Bianchi type I spacetimes. We show that the obtained redshift coincides with the cosmological redshift. We also consider the Cauchy problem for Maxwell's v
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Jönsson, Johan. "Non-isotropic Cosmology in 1+3-formalism." Thesis, Linköpings universitet, Matematiska institutionen, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-113269.

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Cosmology is an attempt to mathematically describe the behaviour of the universe, the most commonly used models are the Friedmann-Lemaître-Robertson-Walker solutions. These models seem to be accurate for an old universe, which is homogeneous with low anisotropy. However for an earlier universe these models might not be that accurate or even correct. The almost non-existent anisotropy observed today might have played a bigger role in the earlier universe. For this reason we will study another model known as Bianchi Type I, where the universe is not necessarily isotropic. We utilize a 1+3-covari
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Lemberger, Benjamin Kurt. "The one place we're trying to get to is just where we can't get: algebraic speciality and gravito-electromagnetism in Bianchi type IX." Oberlin College Honors Theses / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=oberlin1400163799.

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Eriksson, Daniel. "Perturbative Methods in General Relativity." Doctoral thesis, Umeå : Department of Physics, Umeå University, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1488.

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Holgersson, David. "Lanczos potentialer i kosmologiska rumtider." Thesis, Linköping University, Department of Mathematics, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2582.

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<p>We derive the equation linking the Weyl tensor with its Lanczos potential, called the Weyl-Lanczos equation, in 1+3 covariant formalism for perfect fluid Bianchi type I spacetime and find an explicit expression for a Lanczos potential of the Weyl tensor in these spacetimes. To achieve this, we first need to derive the covariant decomposition of the Lanczos potential in this formalism. We also study an example by Novello and Velloso and derive their Lanczos potential in shear-free, irrotational perfect fluid spacetimes from a particular ansatz in 1+3 covariant formalism. The existence of the
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Warmbold, Bianca [Verfasser], and Erhard [Akademischer Betreuer] Bremer. "Regulation der Aufnahme und Synthese des kompatiblen Soluts Glycinbetain durch GbsR-Typ Regulatoren / Bianca Warmbold ; Betreuer: Erhard Bremer." Marburg : Philipps-Universität Marburg, 2019. http://d-nb.info/1189315548/34.

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Books on the topic "Bianchi Type I"

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Small, Bertrice. Bianca. Thorndike Press, 2012.

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Stauffacher, Jack W. For Bianca and Enrico Tallone: The true beauty of a book must be understood from the beauty ofthe written work ... : in celebration of the exhibition at the Grolier Club March to May 1994 Type as Image : the work of Alberto Tallone editore : books from Paris and Apignano 1943-1993 / from friend and colleague Jack W. Stauffacher. Greenwood Press, 1994.

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Smith, Zadie. Denti Bianchi. Mondadori (Italy), 2003.

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Small, Bertrice. Bianca. Penguin Publishing Group, 2015.

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Pilcher, Rosamunde. Le bianche dune della cornovaglia. Mondadori, 1995.

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The Andreou Marriage Arrangement Helen Bianchin. M&b; Publishing, 2010.

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James, Julia. Venganza Griega: (Greek Vengeance) (Harlequin Bianca (Spanish)). Harlequin, 2005.

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Zanna Bianca. Canguro editore, 2011.

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Moby-Dick, la balena bianca (italian edition): La balena bianca. luca pecchini, 2010.

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Porter, Jane. Bajo Su Poder: (Under His Power) (Harlequin Bianca (Spanish)). Harlequin, 2007.

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Book chapters on the topic "Bianchi Type I"

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Liebscher, Stefan. "Application: Cosmological Models of Bianchi Type, the Tumbling Universe." In Bifurcation without Parameters. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-10777-6_13.

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Lepse, Pratik V., and Binaya K. Bishi. "Cosmological Models for Bianchi Type-I Space-Time in Lyra Geometry." In Nonlinear Dynamics and Applications. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-99792-2_69.

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Mahanta, Chandra Rekha, and Krishna Pandit. "Vacuum Solutions in Bianchi Type I Universe in f(R) Theory of Gravity." In Advances in Intelligent Systems and Computing. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-8054-1_9.

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Poonia, Laxmi, and Varsha Maheshwari. "Bianchi Type VI0 Space–Time Cosmological Model with Bulk Viscosity in General Relativity." In Lecture Notes in Networks and Systems. Springer Nature Singapore, 2025. https://doi.org/10.1007/978-981-96-1449-3_5.

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Nungesser, Ernesto. "Diagonal Future of Some Non-diagonal Bianchi A Spacetimes with Matter of Vlasov Type." In Progress in Mathematical Relativity, Gravitation and Cosmology. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-40157-2_51.

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Sharma, Sanjay, and Laxmi Poonia. "Bianchi Type Ix Axially Symmetric Cosmological Model with Negative Deceleration Parameter in General Relativity." In Intelligent System Algorithms and Applications in Science and Technology. Apple Academic Press, 2021. http://dx.doi.org/10.1201/9781003187059-29.

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Mahanta, Chandra Rekha, and Anindita Basumatary. "Bianchi Type I Cosmological Model with Time-Dependent Cosmological Constant in Brans-Dicke Theory of Gravity." In Industrial and Applied Mathematics. Springer Nature Singapore, 2025. https://doi.org/10.1007/978-981-96-1961-0_12.

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Christodoulakis, T., and G. O. Papadopoulos. "Quantum Cosmology for the General Bianchi Type II, VI(Class A) and VII(Class A) Vacuum Geometries." In Modern Theoretical and Observational Cosmology. Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0622-4_9.

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Mahanta, Chandra Rekha, and Shayanika Deka. "Bianchi Type III Cosmological Model with Quadratic Equation of State in f(R, T) Theory of Gravity." In Advances in Intelligent Systems and Computing. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-8054-1_17.

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Mahanta, Chandra Rekha, and Kankana Pathak. "Bianchi Type-I Cosmological Model with a Special Law of Hubble Parameter in f(R, T) Theory of Gravity." In Industrial and Applied Mathematics. Springer Nature Singapore, 2025. https://doi.org/10.1007/978-981-96-1961-0_13.

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Conference papers on the topic "Bianchi Type I"

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BRADLEY, 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.

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Godani, Nisha. "LRS Bianchi Type II in f (R, T ) gravity." In PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON FRONTIERS IN INDUSTRIAL AND APPLIED MATHEMATICS (FIAM-2019). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0018981.

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Shukla, Bhupendra Kumar, Rishi Kumar Tiwari, and Aroonkumar Beesham. "Bianchi Type-I Universe in Modified Theory of Gravity." In Electronic Conference on Universe. MDPI, 2023. http://dx.doi.org/10.3390/ecu2023-14049.

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Mishra, Soma, Rishi Tiwari, Aroonkumar Beesham, and Vipin Dubey. "Bianchi Type I cosmological model in f(R,T) gravity." In 1st Electronic Conference on Universe. MDPI, 2021. http://dx.doi.org/10.3390/ecu2021-09290.

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Dua, Heena, and R. K. Mishra. "Dynamics of Bianchi type-I universe in Brans-Dicke gravity." In ADVANCED MATERIALS AND RADIATION PHYSICS (AMRP-2020): 5th National e-Conference on Advanced Materials and Radiation Physics. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0052703.

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Kumawat, Sunil, and Laxmi Poonia. "Bianchi type – I cylindrically symmetric string cosmological model in general relativity." In ADVANCES IN INTELLIGENT APPLICATIONS AND INNOVATIVE APPROACH. AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0139321.

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Şen, R., and S. Aygün. "Bianchi type-I universe in Lyra manifold with quadratic equation of state." In TURKISH PHYSICAL SOCIETY 32ND INTERNATIONAL PHYSICS CONGRESS (TPS32). Author(s), 2017. http://dx.doi.org/10.1063/1.4976455.

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Güdekli, E., and A. Çalışkan. "Perfect fluid LRS Bianchi type -I- universe model in F(R, T)." In SolarPACES 2017: International Conference on Concentrating Solar Power and Chemical Energy Systems. Author(s), 2018. http://dx.doi.org/10.1063/1.5078924.

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Rao, G. Eswara, V. Ganesh, Y. Aditya, and U. Y. Divya Prasanthi. "Dynamics of Sharma-Mittal dark energy in Bianchi Type-V I0 universe." In AI POWERED TECHNOLOGY INTEGRATION FOR SUSTAINABILITY (AI-PTIS-2024). AIP Publishing, 2025. https://doi.org/10.1063/5.0279478.

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Triyanta, Supardi, and F. P. Zen. "Solutions of Dirac's equation in Bianchi type I spacetime in teleparallel gravity theory." In INTERNATIONAL CONFERENCE ON THEORETICAL AND APPLIED PHYSICS (LCTAP 2012). AIP, 2013. http://dx.doi.org/10.1063/1.4820993.

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Reports on the topic "Bianchi Type I"

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Jensen, L., J. Louko, and P. Ruback. Biaxial Bianchi type 9 quantum cosmology. Office of Scientific and Technical Information (OSTI), 1990. http://dx.doi.org/10.2172/6099351.

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