Academic literature on the topic 'Cosmological models'

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Journal articles on the topic "Cosmological models"

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Harvey, Alex. "Cosmological models." American Journal of Physics 61, no. 10 (1993): 901–6. http://dx.doi.org/10.1119/1.17361.

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Schramm, David N. "Cosmological models." Nuclear Physics B - Proceedings Supplements 70, no. 1-3 (1999): 3–13. http://dx.doi.org/10.1016/s0920-5632(98)00383-1.

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Hajj-Boutros, J. "Cosmological models." International Journal of Theoretical Physics 28, no. 4 (1989): 487–93. http://dx.doi.org/10.1007/bf00673299.

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Bisnovatyi-Kogan, G. S. "Cosmological Models." Astronomy Reports 68, S1 (2024): S69—S73. https://doi.org/10.1134/s1063772924701063.

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DAVIES, P. C. W. "MULTIVERSE COSMOLOGICAL MODELS." Modern Physics Letters A 19, no. 10 (2004): 727–43. http://dx.doi.org/10.1142/s021773230401357x.

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Recent advances in string theory and inflationary cosmology have led to a surge of interest in the possible existence of an ensemble of cosmic regions, or "universes", among the members of which key physical parameters, such as the masses of elementary particles and the coupling constants, might assume different values. The observed values in our cosmic region are then attributed to an observer selection effect (the so-called anthropic principle). The assemblage of universes has been dubbed "the multiverse". In this paper we review the multiverse concept and the criticisms that have been advan
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Coule, D. H. "Quantum cosmological models." Classical and Quantum Gravity 22, no. 12 (2005): R125—R166. http://dx.doi.org/10.1088/0264-9381/22/12/r02.

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Senovilla, José M. M., and Raül Vera. "Dust cosmological models." Classical and Quantum Gravity 14, no. 12 (1997): 3481–87. http://dx.doi.org/10.1088/0264-9381/14/12/028.

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Hajj-Boutros, J. "New cosmological models." Classical and Quantum Gravity 3, no. 3 (1986): 311–16. http://dx.doi.org/10.1088/0264-9381/3/3/006.

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Berman, Marcelo Samuel. "Cosmological models with a variable cosmological term." Physical Review D 43, no. 4 (1991): 1075–78. http://dx.doi.org/10.1103/physrevd.43.1075.

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Beesham, Aroonkumar. "Cosmological models with a variable cosmological term and bulk viscous models." Physical Review D 48, no. 8 (1993): 3539–43. http://dx.doi.org/10.1103/physrevd.48.3539.

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Dissertations / Theses on the topic "Cosmological models"

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Müller, Christian Mathias. "Cosmological models and observation." [S.l. : s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=975799193.

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Campbell, Robert Alan. "Inhomogeneous conformal cosmological models /." Title page, contents and summary only, 1985. http://web4.library.adelaide.edu.au/theses/09PH/09phc1888.pdf.

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PINTUS, NICOLA. "On Inflationary cosmological models." Doctoral thesis, Università degli Studi di Cagliari, 2016. http://hdl.handle.net/11584/266648.

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The most common mechanisms leading to in ation are based on models of gravity minimally coupled to a scalar field rolling on a suitable potential V. We discuss such a model defined by the action I = ∫√-g p [R -2 (ϕ)2 )] d4x, in order to find exact general isotropic and homogeneous cosmological solutions displaying an in ationary behavior at early times and a power-law expansion at late times. We also study the effect of the inclusion of matter (in the form of a perfect uid): in this case, we do not find exact solutions because of the non-integrability of the field equations, but we
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Barnaby, Neil. "Cosmological instabilities." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=103365.

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Though historically the word "tachyon" has been used to describe hypothetical particles which propagate faster than the speed of light, in a more modern context the term has been recycled to refer to certain unstable states in field theory. This thesis explores the role of tachyonic instabilities in cosmology considering tachyons which arise in string theory and also more conventional, field theoretic instabilities. Our study of such instabilities is, in part, motivated by attempts to embed inflation into string theory. We will argue that the study of string theory models of inflation is well-
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Ghodsi, Hoda. "Constraining non-standard cosmological models." Thesis, University of Glasgow, 2011. http://theses.gla.ac.uk/2998/.

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Current observational evidence does not yet exclude the possibility that dark energy could be in the form of phantom energy. A universe consisting of a phantom constituent will be driven toward a drastic end known as the `Big Rip' singularity where all the matter in the universe will be destroyed. Motivated by this possibility, other evolutionary scenarios have been explored by e.g. Barrow, including the phenomena which he called Sudden Future Singularities (SFS). In a model consisting of such events it is possible to have a blow up of the pressure occurring at sometime in the future evolution
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Graham, Christopher Michael. "Testing models of cosmological inflation." Thesis, University of Newcastle Upon Tyne, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.512023.

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Leeper, Emily. "Dynamics of cosmological braneworld models." Thesis, University of Portsmouth, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.425773.

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Rhodes, Christophe Sebastian. "Cosmological observations in braneworld models." Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.615727.

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Jörgenfelt, Erik. "Invariant Construction of Cosmological Models." Thesis, Umeå universitet, Institutionen för fysik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-125403.

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Solutions to the Einstein field equations can be constructed from invariant objects. If a solution is found it is locally equivalent to all solutions constructed from the same set. Here the method is applied to spatially-homogeneous solutions with pre-determined algebras, under the assumption that the invariant frame field of standard vectors is orthogonal on the orbits. Solutions with orthogonal fluid flow of Bianchi type III are investigated and two classes of orthogonal dust (zero pressure) solutions are found, as well as one vacuum energy solution. Tilted dust solutions with non-vanishing
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Duran, Sancho Ivan. "Constraining Cosmological Models of Dark Energy." Doctoral thesis, Universitat Autònoma de Barcelona, 2013. http://hdl.handle.net/10803/125917.

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Avui en dia, l'Univers sembla estar experimentant una fase d'expansió accelerada, com ho demostren les dades de supernoves i posteriorment corroborada per una sèrie de mesuraments cosmològiques -molt recentment pel satèl·lit Planck. Mentre que aquesta expansió pot ser descrit en la teoria de la gravetat d'Einstein mitjançant la invocació de l'existència d'una positiva, però extremadament petita constant cosmològica, Λ, connectat al buit quàntic, s'han proposat moltes alternatives. A grans trets, el contingut d'energia de l'univers actual es pot dividir en 5% de la matèria bariònica i el 95% d'
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Books on the topic "Cosmological models"

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Krasiński, Andrzej. Inhomogeneous cosmological models. Cambridge University Press, 1996.

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Krasiński, Andrzej. Inhomogeneous cosmological models. Cambridge University Press, 2006.

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A, Molina, and Senovilla J. M. M, eds. Proceedings of the Spanish Relativity Meeting on Inhomogeneous Cosmological Models. World Scientific, 1995.

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Maeda, Keiichi. Inflation in a renormalizable cosmological model and the cosmic no hair conjecture. National Aeronautics and Space Administration, 1988.

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M, Horack John, and United States. National Aeronautics and Space Administration., eds. The compatibility of Friedmann cosmological models with observed properties of gamma-ray bursts and a large Hubble constant. National Aeronautics and Space Administration, 1996.

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Klingborg, Caroline Elgh, and Jerry Määttä. Kosmologiska pilar: Cosmological arrows. Edited by Bonniers konsthall. Art and Theory Publishing, 2019.

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Brainerd, Jerome James. [Cosmological gamma-ray burst model]: Final report for NASA grant NAG5-2056. National Aeronautics and Space Administration, 1993.

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United States. National Aeronautics and Space Administration., ed. [Cosmological gamma-ray burst model]: Final report for NASA grant NAG5-2056. National Aeronautics and Space Administration, 1993.

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United States. National Aeronautics and Space Administration., ed. [Cosmological gamma-ray burst model]: Final report for NASA grant NAG5-2056. National Aeronautics and Space Administration, 1993.

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Gasperini, Maurizio. L'universo prima del big bang: Cosmologia e teoria delle stringhe. F. Muzzio, 2002.

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Book chapters on the topic "Cosmological models"

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Bambi, Cosimo. "Cosmological Models." In Introduction to General Relativity. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-1090-4_11.

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Ellis, George F. R., and Henk Elst. "Cosmological Models." In Theoretical and Observational Cosmology. Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4455-1_1.

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Hájíček, Petr. "Cosmological Models." In An Introduction to the Relativistic Theory of Gravitation. Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-78659-7_5.

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Bambi, Cosimo, and Alexandre D. Dolgov. "Cosmological Models." In UNITEXT for Physics. Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-48078-6_4.

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Börner, Gerhard. "The Cosmological Models." In The Early Universe. Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-662-02734-9_1.

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Blanchard, A. "Homogeneous Cosmological Models." In Astrophysics and Space Science Library. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-011-4175-8_1.

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Jou, David, José Casas-Vázquez, and Georgy Lebon. "Viscous Cosmological Models." In Extended Irreversible Thermodynamics. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-642-56565-6_18.

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Börner, Gerhard. "The Cosmological Models." In Astronomy and Astrophysics Library. Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-662-05267-9_1.

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Börner, Gerhard. "The Cosmological Models." In The Early Universe. Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-662-02918-3_1.

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Jou, David, José Casas-Vázquez, and Georgy Lebon. "Viscous Cosmological Models and Cosmological Horizons." In Extended Irreversible Thermodynamics. Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-3074-0_18.

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Conference papers on the topic "Cosmological models"

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Molina, A., and J. M. M. Senovilla. "Inhomogeneous Cosmological Models." In Spanish Relativity Meeting. WORLD SCIENTIFIC, 1995. http://dx.doi.org/10.1142/9789814532471.

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CATALDO, MAURICIO, and SERGIO DEL CAMPO. "INHOMOGENEOUS FRIEDMANN COSMOLOGICAL MODELS." In Proceedings of the MG12 Meeting on General Relativity. WORLD SCIENTIFIC, 2012. http://dx.doi.org/10.1142/9789814374552_0217.

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COLEY, ALAN, PATRICK SANDIN, and BASSEMAH ALHULAIMI. "EINSTEIN-AETHER COSMOLOGICAL MODELS." In Proceedings of the MG13 Meeting on General Relativity. WORLD SCIENTIFIC, 2015. http://dx.doi.org/10.1142/9789814623995_0136.

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Sanghai, Viraj A. A. "Post-Newtonian cosmological models." In Proceedings of the MG14 Meeting on General Relativity. WORLD SCIENTIFIC, 2017. http://dx.doi.org/10.1142/9789813226609_0262.

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Arnowitt, R., and Pran Nath. "Cosmological consequences of supergravity models." In COSMO--98. ASCE, 1999. http://dx.doi.org/10.1063/1.59412.

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KREMER, G. M. "IRREVERSIBLE PROCESSES AND COSMOLOGICAL MODELS." 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_0335.

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PINTO-NETO, NELSON. "BOUNCING COSMOLOGICAL MODELS: THEORY AND PERSPECTIVES." 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_0047.

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"Five Dimensional Mesonic String Cosmological Models." In 4th International Conference on Advances in Engineering Sciences and Applied Mathematics. International Institute of Engineers, 2015. http://dx.doi.org/10.15242/iie.e1215029.

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NESTER, JAMES M., CHIANG-MEI CHEN, and JIAN-LIANG LIU. "QUASI-LOCAL ENERGY FOR COSMOLOGICAL MODELS." In Proceedings of the MG11 Meeting on General Relativity. World Scientific Publishing Company, 2008. http://dx.doi.org/10.1142/9789812834300_0347.

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Mikheeva, Elena V. "Current status of cosmological MDM models." In Cosmology and particle physics. AIP, 2001. http://dx.doi.org/10.1063/1.1363541.

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Reports on the topic "Cosmological models"

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Charlton, J. C., and M. S. Turner. Kinematic tests of exotic flat cosmological models. Office of Scientific and Technical Information (OSTI), 1986. http://dx.doi.org/10.2172/5608890.

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Zilberman, Mark. An Adjustment of the Apparent Luminosity of Standard Candles for the 'De-boosting' Effect. Intellectual Archive, 2022. http://dx.doi.org/10.32370/iaj.2639.

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“De-boosting” is a well-known relativistic effect that alters the apparent luminosity of radiation sources with the non-zero redshift parameter z. It exists in both Special Relativity and General Relativity frameworks and is proportional to (z+1)^(-2). While the “boosting” (for blueshift) and “de-boosting” (for redshift) of light sources has been successfully accounted for and observed in research of various astronomical objects, it was ignored in the establishment of Standard candles for cosmological distances. A Standard candle adjustment appears necessary for “de-boosting” for high z, other
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España Fontán, Paula, and Maria Angeles Gomez Flechoso. Effects of the orbit orientation on the evolution of dwarf satellite galaxies. Fundación Avanza, 2023. http://dx.doi.org/10.60096/fundacionavanza/2492022.

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Cosmological models propose a hierarchical scenario for galaxy evolution, where dwarf galaxies are accreted in the halo of larger ones. We study the effect of the satellite’s orbital orientation on the planar alignment of satellite galaxies.
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Zilberman, Mark. Methods to Test the “Dimming Effect” Produced by a Decrease in the Number of Photons Received from Receding Light Sources. Intellectual Archive, 2021. http://dx.doi.org/10.32370/ia_2021_06_22.

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The hypothetical “Dimming effect” describes the change of the number of photons arriving from a receding light source per unit of time. In non-relativistic systems,the "Dimming effect" occurs due to the fact that as light sources move away, the distance between the emitter and the receiver constantly increases, and the photons always take longer to reach the receiver. This reduces the number of photons received per time unit compared to the number of emitted photons per time unit. Negligible for speeds incomparable with the speed of light c, the "Dimming effect" can be very significant for spe
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Bjorken, James. Standard Model Parameters and the Cosmological Constant. Office of Scientific and Technical Information (OSTI), 2001. http://dx.doi.org/10.2172/784897.

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Zilberman, Mark. Methods to Test the “Dimming Effect” Produced by a Decrease in the Number of Photons Received from Receding Light Sources. Intellectual Archive, 2020. http://dx.doi.org/10.32370/iaj.2437.

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The hypothetical “Dimming Effect” describes the change of the number of photons arriving from a moving light source per unit of time. In non-relativistic systems, the “Dimming effect” may occur due to the growing distance of light sources moving away from the receiver. This means that due to the growing distance, the photons continuously require more time to reach the receiver, which reduces the number of received photons per time unit compared to the number of emitted photons. Understandably, the proposed “Dimming effect” must be tested (confirmed or rejected) through observations. a. This ar
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Alexander, Stephon. The Geometrization of Matter Proposal in the Barrett-Crane Model and Resolution of Cosmological Problems. Office of Scientific and Technical Information (OSTI), 2003. http://dx.doi.org/10.2172/813313.

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HEFNER, Robert. IHSAN ETHICS AND POLITICAL REVITALIZATION Appreciating Muqtedar Khan’s Islam and Good Governance. IIIT, 2020. http://dx.doi.org/10.47816/01.001.20.

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Ours is an age of pervasive political turbulence, and the scale of the challenge requires new thinking on politics as well as public ethics for our world. In Western countries, the specter of Islamophobia, alt-right populism, along with racialized violence has shaken public confidence in long-secure assumptions rooted in democracy, diversity, and citizenship. The tragic denouement of so many of the Arab uprisings together with the ascendance of apocalyptic extremists like Daesh and Boko Haram have caused an even greater sense of alarm in large parts of the Muslim-majority world. It is against
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Schulz, M. Domain Walls, Branes, and Fluxes in String Theory: New Ideas on the Cosmological Constant Problem, Moduli Stabilization, and Vacuum Connectedness. Office of Scientific and Technical Information (OSTI), 2005. http://dx.doi.org/10.2172/839826.

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