Status: Bibliographieeintrag
Standort: ---
Exemplare:
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| Online-Ressource |
Verfasst von: | Pace, Francesco [VerfasserIn]  |
| Meyer, Sven [VerfasserIn]  |
| Bartelmann, Matthias [VerfasserIn]  |
Titel: | On the implementation of the spherical collapse model for dark energy models |
Verf.angabe: | Francesco Pace, Sven Meyer, Matthias Bartelmann |
E-Jahr: | 2017 |
Jahr: | 25 October 2017 |
Umfang: | ? |
Fussnoten: | Gesehen am 03.05.2018 |
Titel Quelle: | Enthalten in: Journal of cosmology and astroparticle physics |
Ort Quelle: | London : IOP, 2003 |
Jahr Quelle: | 2017 |
Band/Heft Quelle: | (2017), 10, Artikel-ID 040, Seite ? |
ISSN Quelle: | 1475-7516 |
Abstract: | In this work we review the theory of the spherical collapse model and critically analyse the aspects of the numerical implementation of its fundamental equations. By extending a recent work by [1], we show how different aspects, such as the initial integration time, the definition of constant infinity and the criterion for the extrapolation method (how close the inverse of the overdensity has to be to zero at the collapse time) can lead to an erroneous estimation (a few per mill error which translates to a few percent in the mass function) of the key quantity in the spherical collapse model: the linear critical overdensity δ c , which plays a crucial role for the mass function of halos. We provide a better recipe to adopt in designing a code suitable to a generic smooth dark energy model and we compare our numerical results with analytic predictions for the EdS and the ΛCDM models. We further discuss the evolution of δ c for selected classes of dark energy models as a general test of the robustness of our implementation. We finally outline which modifications need to be taken into account to extend the code to more general classes of models, such as clustering dark energy models and non-minimally coupled models. |
DOI: | doi:10.1088/1475-7516/2017/10/040 |
URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext ; Verlag: http://dx.doi.org/10.1088/1475-7516/2017/10/040 |
| Volltext: http://stacks.iop.org/1475-7516/2017/i=10/a=040 |
| DOI: https://doi.org/10.1088/1475-7516/2017/10/040 |
Datenträger: | Online-Ressource |
Sprache: | eng |
K10plus-PPN: | 1572578505 |
Verknüpfungen: | → Zeitschrift |
On the implementation of the spherical collapse model for dark energy models / Pace, Francesco [VerfasserIn]; 25 October 2017 (Online-Ressource)
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