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Abstract:

In recent years, some studies have drawn attention to the lack of large-angle correlations in the observed cosmic microwave background (CMB) temperature anisotropies with respect to that predicted within the standard Λ CDM model. Lately, it has been argued that such a lack of correlations could be explained in the framework of the so-called Rh= ct model without inflation. The aim of this work is to study whether there is a mechanism to generate, through a quantum field theory, the primordial power spectrum presented by these authors. Specifically, we consider two different scenarios: first, we assume a scalar field dominating the early Universe in the Rh= ct cosmological model, and second, we deal with the possibility of adding an early inflationary phase to the mentioned model. During the analysis of the consistency between the predicted and observed amplitudes of the CMB temperature anisotropies in both scenarios, we run into deep issues which indicate that it is not clear how to characterize the primordial quantum perturbations within the Rh= ct model. © 2016, The Author(s).

Registro:

Documento: Artículo
Título:Puzzling initial conditions in the Rh= ct model
Autor:Bengochea, G.R.; León, G.
Filiación:Instituto de Astronomía y Física del Espacio (IAFE), CONICET-Universidad de Buenos Aires, Buenos Aires, 1428, Argentina
Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, PabI, Buenos Aires, 1428, Argentina
Año:2016
Volumen:76
Número:11
DOI: http://dx.doi.org/10.1140/epjc/s10052-016-4485-y
Título revista:European Physical Journal C
Título revista abreviado:Eur. Phys. J. C
ISSN:14346044
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346044_v76_n11_p_Bengochea

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Citas:

---------- APA ----------
Bengochea, G.R. & León, G. (2016) . Puzzling initial conditions in the Rh= ct model. European Physical Journal C, 76(11).
http://dx.doi.org/10.1140/epjc/s10052-016-4485-y
---------- CHICAGO ----------
Bengochea, G.R., León, G. "Puzzling initial conditions in the Rh= ct model" . European Physical Journal C 76, no. 11 (2016).
http://dx.doi.org/10.1140/epjc/s10052-016-4485-y
---------- MLA ----------
Bengochea, G.R., León, G. "Puzzling initial conditions in the Rh= ct model" . European Physical Journal C, vol. 76, no. 11, 2016.
http://dx.doi.org/10.1140/epjc/s10052-016-4485-y
---------- VANCOUVER ----------
Bengochea, G.R., León, G. Puzzling initial conditions in the Rh= ct model. Eur. Phys. J. C. 2016;76(11).
http://dx.doi.org/10.1140/epjc/s10052-016-4485-y