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Abstract:

We extend the homogeneous modified Chaplygin cosmologies to large-scale perturbations by formulating a Zeldovich-like approximation. We show that the model interpolates between an epoch with a soft equation of state and a de Sitter phase, and that in the intermediate regime its matter content is simply the sum of dust and a cosmological constant. We then study how the large-scale inhomogeneities evolve and compare the results with cold dark matter (CDM), ΛCDM and generalized Chaplygin scenarios. We find that unlike that like the latter, our models resemble ΛCDM. © 2005 Elsevier B.V. All rights reserved.

Registro:

Documento: Artículo
Título:Large-scale inhomogeneities in modified Chaplygin gas cosmologies
Autor:Chimento, L.P.; Lazkoz, R.
Filiación:Departamento de Física, Facultad de Ciencias Exactas Y Naturales, Pabellón I, 1428 Buenos Aires, Argentina
Fisika Teorikoa, Zientzia Eta Teknologia Fakultatea, Euskal Herriko Unibertsitatea, 644 Posta Kutxatila, 48080 Bilbao, Spain
Palabras clave:article; chemical modification; cold; cosmos; darkness; gas; molecular model
Año:2005
Volumen:615
Número:3-4
Página de inicio:146
Página de fin:152
DOI: http://dx.doi.org/10.1016/j.physletb.2005.04.029
Título revista:Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Título revista abreviado:Phys Lett Sect B Nucl Elem Part High-Energy Phys
ISSN:03702693
CODEN:PYLBA
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_03702693_v615_n3-4_p146_Chimento.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v615_n3-4_p146_Chimento

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Citas:

---------- APA ----------
Chimento, L.P. & Lazkoz, R. (2005) . Large-scale inhomogeneities in modified Chaplygin gas cosmologies. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 615(3-4), 146-152.
http://dx.doi.org/10.1016/j.physletb.2005.04.029
---------- CHICAGO ----------
Chimento, L.P., Lazkoz, R. "Large-scale inhomogeneities in modified Chaplygin gas cosmologies" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 615, no. 3-4 (2005) : 146-152.
http://dx.doi.org/10.1016/j.physletb.2005.04.029
---------- MLA ----------
Chimento, L.P., Lazkoz, R. "Large-scale inhomogeneities in modified Chaplygin gas cosmologies" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 615, no. 3-4, 2005, pp. 146-152.
http://dx.doi.org/10.1016/j.physletb.2005.04.029
---------- VANCOUVER ----------
Chimento, L.P., Lazkoz, R. Large-scale inhomogeneities in modified Chaplygin gas cosmologies. Phys Lett Sect B Nucl Elem Part High-Energy Phys. 2005;615(3-4):146-152.
http://dx.doi.org/10.1016/j.physletb.2005.04.029