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Cosmo-Blow-Up SIGNED

Deflating the blow-up: controlling infinities in cosmic fluid descriptions

Total Cost €

0

EC-Contrib. €

0

Partnership

0

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 Cosmo-Blow-Up project word cloud

Explore the words cloud of the Cosmo-Blow-Up project. It provides you a very rough idea of what is the project "Cosmo-Blow-Up" about.

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Project "Cosmo-Blow-Up" data sheet

The following table provides information about the project.

Coordinator
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS 

Organization address
address: RUE MICHEL ANGE 3
city: PARIS
postcode: 75794
website: www.cnrs.fr

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country France [FR]
 Total cost 185˙076 €
 EC max contribution 185˙076 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2017
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2018
 Duration (year-month-day) from 2018-12-01   to  2020-11-30

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS FR (PARIS) coordinator 185˙076.00

Map

 Project objective

'According to the standard model of cosmology, we are witnesses of an epic battle: While dark energy leads to an accelerated expansion, matter and particularly the dark matter, opposes this trend, leading to the observed large-scale structure of the Universe. Since the pioneering discovery of dark energy that lead to a Nobel Prize in Physics, the nature of dark matter is still shrouded in mystery. What we know is that matter can be described as a fluid on macrophysical scales, and that the fluid has, at early times, no overlapping matter trajectories. Yet, matter trajectories do eventually begin to intersect ('shell-crossing'), which marks the starting point of very complex computations in the phase-space on the one side, and the birth of our cluttered Universe on the other side. Understanding the collapse and shell-crossing is quite a challenge that is usually tackled by utterly opposing means, either by (approximative) analytical models or by cosmological N-body simulations. With this Marie-Curie fellowship, I will close this gap and get full control of the instant of shell-crossing in two complementary ways. I will develop full-fledged numerical simulations of the cosmological fluid equations and develop certain matter collapse models, that, at their heart, determine the matter trajectories by exact analytical descriptions until the instance of shell-crossing, where infinities become real and the solutions 'blow up'. Detecting blow-ups is one of the most challenging and rewarding problems in mathematical physics; by resolving them, precious information will be gained which we will use to improve (heavily used) N-body simulations at the critical vicinity of shell-crossing. The department Lagrange (host institute) is a unique place in Europe that houses both world experts in numerical cosmology and in mathematical analysis, thereby complementing exactly my expertise (exact analytical models). This allows us to solve outstanding problems in interdisciplinary fields.'

 Publications

year authors and title journal last update
List of publications.
2019 Cornelius Rampf
Quasi-spherical collapse of matter in ΛCDM
published pages: 5223-5235, ISSN: 0035-8711, DOI: 10.1093/mnras/stz372
Monthly Notices of the Royal Astronomical Society 484/4 2019-06-27
2019 Cora Uhlemann, Cornelius Rampf, Mateja Gosenca, Oliver Hahn
Semiclassical path to cosmic large-scale structure
published pages: , ISSN: 2470-0010, DOI: 10.1103/physrevd.99.083524
Physical Review D 99/8 2019-06-27

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