Zobrazeno 1 - 10
of 12
pro vyhledávání: '"[PACS] Lower dimensional models"'
Autor:
Miguel Navarro
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
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instname
New features of the generalized symmetries of generic two-dimensional dilaton models of gravity are presented and invariant gravity-matter couplings are introduced. We show that there is a continuum set of Noether symmetries, which contains half a De
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::31b8e5a799989187a0d30dc40c95a624
https://doi.org/10.1103/physrevd.56.2384
https://doi.org/10.1103/physrevd.56.2384
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
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We present a complete quantization of an approximately homogeneous and isotropic universe with small scalar perturbations. We consider the case in which the matter content is a minimally coupled scalar field and the spatial sections are flat and comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3962130b587f7be279bc3dedb6c65259
https://doi.org/10.1103/physrevd.88.044013
https://doi.org/10.1103/physrevd.88.044013
Autor:
Tomasz Pawlowski, Wojciech Kamiński
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
instname
9 p.
The self-adjointness of an evolution operator Θ corresponding to the model of the flat FRW universe with massless scalar field and cosmological constant quantized in the framework of loop quantum cosmology is studied in the case > 0. It is
The self-adjointness of an evolution operator Θ corresponding to the model of the flat FRW universe with massless scalar field and cosmological constant quantized in the framework of loop quantum cosmology is studied in the case > 0. It is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e914b2e3d0203077002b1b8c0b5f3bf
http://hdl.handle.net/10261/74110
http://hdl.handle.net/10261/74110
Autor:
Iñaki Garay, Eduardo J. S. Villaseñor
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
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e-Archivo. Repositorio Institucional de la Universidad Carlos III de Madrid
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e-Archivo. Repositorio Institucional de la Universidad Carlos III de Madrid
20 pags. ; appendix
We discuss two different types of issues concerning the quantization of Einstein–Rosen waves. First we study in detail the possibility of using the coherent states corresponding to the dynamics of the auxiliary, freeHamilto
We discuss two different types of issues concerning the quantization of Einstein–Rosen waves. First we study in detail the possibility of using the coherent states corresponding to the dynamics of the auxiliary, freeHamilto
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aecc6e8553d340540bdcee235e10bb8b
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
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instname
28 pags.
The purpose of this paper is to analyze in detail the Hamiltonian formulation for the compact Gowdymodels coupled to massless scalar fields as a necessary first step toward their quantization. We will pay special attention to the coupli
The purpose of this paper is to analyze in detail the Hamiltonian formulation for the compact Gowdymodels coupled to massless scalar fields as a necessary first step toward their quantization. We will pay special attention to the coupli
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6be841d8bf8206c14cdd579ff7fc7b19
http://arxiv.org/abs/0707.3333
http://arxiv.org/abs/0707.3333
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
instname
4 pags.
We show in this Letter that gravity coupled to a massless scalar field with full cylindrical symmetry can be exactly quantized by an extension of the techniques used in the quantization of Einstein-Rosen waves. This system provides a use
We show in this Letter that gravity coupled to a massless scalar field with full cylindrical symmetry can be exactly quantized by an extension of the techniques used in the quantization of Einstein-Rosen waves. This system provides a use
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0ec697743953440f0460eee6b51b15a2
https://doi.org/10.1103/physrevlett.95.051301
https://doi.org/10.1103/physrevlett.95.051301
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
instname
21 pages, 9 figures.-- PACS nrs.: 04.60.Ds, 04.60.Kz, 04.62.+v.-- ArXiv pre-print available at: http://arxiv.org/abs/gr-qc/0412028
We discuss the asymptotic behavior of regulated field commutators for linearly polarized, cylindrically symmetric
We discuss the asymptotic behavior of regulated field commutators for linearly polarized, cylindrically symmetric
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c90e07cebc6a49397ed7acadbfd992e2
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
E-Prints Complutense. Archivo Institucional de la UCM
E-Prints Complutense: Archivo Institucional de la UCM
Universidad Complutense de Madrid
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E-Prints Complutense. Archivo Institucional de la UCM
E-Prints Complutense: Archivo Institucional de la UCM
Universidad Complutense de Madrid
The quantization of circular strings in an anti-de Sitter background spacetime is performed, obtaining a discrete spectrum for the string mass. A comparison with a four-dimensional homogeneous and isotropic spacetime coupled to a conformal scalar fie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::26524d35238a04a27f71fbba9b1e7d4a
http://hdl.handle.net/10261/100778
http://hdl.handle.net/10261/100778
Autor:
Miguel Navarro
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
instname
The symmetries of generic two-dimensional (2D) dilaton models of gravity with (and without) matter are studied in some detail. It is shown that δ2, one of the symmetries of the matterless models, can be generalized to the case where matter fields of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::484a7e5eedf67eff96c66eac459b7610
http://hdl.handle.net/10261/102528
http://hdl.handle.net/10261/102528
Publikováno v:
E-Prints Complutense. Archivo Institucional de la UCM
instname
E-Prints Complutense: Archivo Institucional de la UCM
Universidad Complutense de Madrid
Digital.CSIC. Repositorio Institucional del CSIC
instname
E-Prints Complutense: Archivo Institucional de la UCM
Universidad Complutense de Madrid
Digital.CSIC. Repositorio Institucional del CSIC
Starting with a procedure for dealing with general asymptotic behavior, we construct a quantum theory for asymptotically anti-de Sitter wormholes. We follow both the path integral formalism and the algebraic quantization program proposed by Ashtekar.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::04c575207e1da246b8b1e67212bad9b3
https://pubmed.ncbi.nlm.nih.gov/10020312
https://pubmed.ncbi.nlm.nih.gov/10020312