Relevant bibliographies by topics / Minisuperspace

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Minisuperspace'

Author: Grafiati
Published: 22 February 2023

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Journal articles on the topic "Minisuperspace"

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ROSQUIST, KJELL, and CLAES UGGLA. "VISUALIZING MINISUPERSPACE DYNAMICS." Modern Physics Letters A 08, no. 30 (1993): 2815–25. http://dx.doi.org/10.1142/s0217732393003202.

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We show that one can find a useful compactified representation of minisuperspace dynamics using conformal diagrams and how global and asymptotic qualitative features of the dynamics can be inferred from. the diagrams. To provide explicit examples this is done for the locally rotationally symmetric Bianchi type I and IX models.
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VISSER, MATT. "WHEELER WORMHOLES AND TOPOLOGY CHANGE: A MINISUPERSPACE ANALYSIS." Modern Physics Letters A 06, no. 29 (1991): 2663–67. http://dx.doi.org/10.1142/s0217732391003109.

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Wheeler's wormholes are analyzed within the context of a particular minisuperspace approximation. In this approximation the Wheeler-DeWitt equation describing a wormhole is exactly solvable and the quantum mechanical wavefunction of a wormhole can be explicitly exhibited. Calculation shows that the throat of a minisuperspace Wheeler wormhole is stabilized against collapse by quantum mechanical effects: The radius of the throat has an expectation value of order the Planck length. Implications of this result with respect to the process of quantum gravitational topology change are discussed. In p
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Kiefer, Claus. "Wave packets in minisuperspace." Physical Review D 38, no. 6 (1988): 1761–72. http://dx.doi.org/10.1103/physrevd.38.1761.

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Capozziello, Salvatore, and Mariafelicia De Laurentis. "Noether symmetries in extended gravity quantum cosmology." International Journal of Geometric Methods in Modern Physics 11, no. 02 (2014): 1460004. http://dx.doi.org/10.1142/s0219887814600044.

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We summarize the use of Noether symmetries in Minisuperspace Quantum Cosmology. In particular, we consider minisuperspace models, showing that the existence of conserved quantities gives selection rules that allow to recover classical behaviors in cosmic evolution according to the so-called Hartle criterion. Such a criterion selects correlated regions in the configuration space of dynamical variables whose meaning is related to the emergence of classical observable universes. Some minisuperspace models are worked out starting from Extended Gravity, in particular coming from scalar-tensor, f(R)
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DJORDJEVIĆ, GORAN S., BRANKO DRAGOVICH, LJUBIŠA D. NEŠIĆ, and IGOR V. VOLOVICH. "p-ADIC AND ADELIC MINISUPERSPACE QUANTUM COSMOLOGY." International Journal of Modern Physics A 17, no. 10 (2002): 1413–33. http://dx.doi.org/10.1142/s0217751x02009734.

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We consider the formulation and some elaboration of p-adic and adelic quantum cosmology. The adelic generalization of the Hartle–Hawking proposal does not work in models with matter fields. p-adic and adelic minisuperspace quantum cosmology is well defined as an ordinary application of p-adic and adelic quantum mechanics. It is illustrated by a few cosmological models in one, two and three minisuperspace dimensions. As a result of p-adic quantum effects and the adelic approach, these models exhibit some discreteness of the minisuperspace and cosmological constant. In particular, discreteness o
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OBREGÓN, O., M. SABIDO та E. MENA. "ON NONCOMMUTATIVE MINISUPERSPACE, COSMOLOGY AND Λ". Modern Physics Letters A 24, № 24 (2009): 1907–14. http://dx.doi.org/10.1142/s0217732309030527.

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In this letter we study the effects of a noncommutative minisuperspace, including matter degrees of freedom on a toy model for FRW universe with cosmological constant. In this simple model the vacuum energy density is modified by the presence of the noncommutative minisuperspace parameter, from which we conjecture on the discrepancy between the calculated and observed vacuum energy density associated to Λ.
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Anastopoulos, Charis, and Ntina Savvidou. "Minisuperspace models in histories theory." Classical and Quantum Gravity 22, no. 9 (2005): 1841–66. http://dx.doi.org/10.1088/0264-9381/22/9/023.

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Grigorian, Sergey. "Minisuperspace models in M-theory." Classical and Quantum Gravity 24, no. 20 (2007): 4881–913. http://dx.doi.org/10.1088/0264-9381/24/20/001.

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Hikida, Yasuaki. "String Theory on LorentzianAdS3in Minisuperspace." Journal of High Energy Physics 2004, no. 04 (2004): 025. http://dx.doi.org/10.1088/1126-6708/2004/04/025.

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ISHIKAWA, ATUSHI, and TOSHIKI ISSE. "THE STABILITY OF THE MINISUPERSPACE." Modern Physics Letters A 08, no. 36 (1993): 3413–27. http://dx.doi.org/10.1142/s0217732393003834.

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The stability of the minisuperspace model of the early universe is studied by solving the Wheeler-DeWitt equation numerically. We consider a system of Einstein gravity with a scalar field. When we solve the Wheeler-DeWitt equation, we pick up some inhomogeneous wave modes from infinite wave modes adequately: degrees of freedom of the superspace are restricted to finite. We show that the minisuperspace is stable when a scale factor (a) of the universe is a few times larger than the Planck length, while it becomes unstable when a is comparable to the Planck length.
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Dissertations / Theses on the topic "Minisuperspace"

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Correia, da Silva Cristóvão Lourenço Barata. "Simplicial minisuperspace models." Thesis, University of Cambridge, 2001. https://www.repository.cam.ac.uk/handle/1810/251760.

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Simplicial quantum gravity provides a framework that preserves the full 4-dimensional nature of spacetime, making it specially suited to deal with topological issues. Additionally, simplicial quantum gravity leads to simplicial minisuperspace approximation in a more natural way than its continuum counterpart. The simplicial minisuperspace models have the advantage of still preserving the full 4-dimensional treatment of spacetime, not depending on any arbitrary (3+1) decomposition. There is also the possibility of systematic improvement. In this dissertation we investigate how the simplicial fr
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CASCIOLI, VALERIO. "Evolutionary minisuperspace quantum dynamics in the WKB approach." Doctoral thesis, 2021. http://hdl.handle.net/11573/1507657.

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This Thesis deals with the application of the Vilenkin idea of a probabilistic interpretation of the Universe wavefunction, firstly proposed in the 1969, to the Bianchi models exploiting in particular two different quantization procedures: the Standard one and the Polymer Quantum Mechanics. The whole work can be divided in three research areas. The first one is the study of the Taub Cosmology, a particular case of the Bianchi IX model in which there are two equal cosmic scale factors. We developed a suitable technical algorithm to implement a separation of the Minisuperspace configurational
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Book chapters on the topic "Minisuperspace"

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Castagnino, Mario, and Marc Thibeault. "Hamiltonian diagonalization in minisuperspace." In The Origin of Structure in the Universe. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1705-0_4.

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Zampeli, Adamantia. "Minisuperspace Quantisation via Conditional Symmetries." In Einstein Equations: Physical and Mathematical Aspects of General Relativity. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-18061-4_13.

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Bojowald, Martin. "Minisuperspace Models." In Foundations of Quantum Cosmology. IOP Publishing, 2020. http://dx.doi.org/10.1088/2514-3433/ab9c98ch4.

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Hu, B. L., J. P. Paz, and S. Sinha. "Minisuperspace as a Quantum Open System." In Directions in General Relativity. Cambridge University Press, 1993. http://dx.doi.org/10.1017/cbo9780511628863.015.

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"Minisuperspace Quantization and the Time Problem." In Challenging Routes in Quantum Cosmology. WORLD SCIENTIFIC, 2022. http://dx.doi.org/10.1142/9789814415071_0005.

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KRTOUŠ, PAVEL. "RELATION BETWEEN CANONICAL AND SUM-OVER-HISTORIES QUANTIZATION OF MINISUPERSPACE-LIKE MODELS." In The Ninth Marcel Grossmann Meeting. World Scientific Publishing Company, 2002. http://dx.doi.org/10.1142/9789812777386_0254.

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Ashtekar, A., R. S. Tate, and C. Uggla. "Minisuperspaces: Symmetries and Quantization." In Directions in General Relativity. Cambridge University Press, 1993. http://dx.doi.org/10.1017/cbo9780511628863.007.

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Isenberg, J., and M. Jackson. "Ricci Flow on Minisuperspaces and the Geometry-Topology Problem." In Directions in General Relativity. Cambridge University Press, 1993. http://dx.doi.org/10.1017/cbo9780511628863.016.

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Conference papers on the topic "Minisuperspace"

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Battisti, Marco Valerio, Giovanni Montani, Carlo Luciano Bianco, and She-Sheng Xue. "Minisuperspace dynamics in a generalized uncertainty principle framework." In RELATIVISTIC ASTROPHYSICS: 4th Italian-Sino Workshop. AIP, 2008. http://dx.doi.org/10.1063/1.2836998.

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Ansoldi, S. "Minisuperspace, WKB and Quantum States of General Relativistic Extended Objects." In GENERAL RELATIVITY AND GRAVITATIONAL PHYSICS: 16th SIGRAV Conference on General Relativity and Gravitational Physics. AIP, 2005. http://dx.doi.org/10.1063/1.1891540.

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Damour, Thibault, and Philippe Spindel. "Minisuperspace quantum supersymmetric cosmology (and its hidden hyperbolic Kac-Moody structures)." In Proceedings of the MG14 Meeting on General Relativity. WORLD SCIENTIFIC, 2017. http://dx.doi.org/10.1142/9789813226609_0040.

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