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DhostHunt SIGNED

A new avenue in the hunt for dark energy

Total Cost €

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EC-Contrib. €

0

Partnership

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 DhostHunt project word cloud

Explore the words cloud of the DhostHunt project. It provides you a very rough idea of what is the project "DhostHunt" about.

central    techniques    enhanced    combined    scenarios    gravitational    helioseismic    standard    devised    theoretical    predicted    search    force    corresponding    confront    physics    tightest    spectrum    derive    inversions    energy    forces    eigenspectrum    adiabatic    decade    last    implications    pulsation    satellite    broad    gravity    time    mediated    nature    quest    challenged    line    relativity    phenomenological    interdisciplinary    framework    improvement    pulsations    solar    details    orders    mission    interior    finest    imprints    universe    introduce    numerical    observations    helioseismology    scalar    accordance    severely    date    expansion    esa    context    cosmological    interactions    particles    inability    upcoming    probe    accuracy    unprecedented    astrophysics    model    theories    cosmology    genuinely    euclid    effort    systematic    predictions    constraints    gr    extreme    sophisticated    accelerated    stellar    dark    currently    pivotal    formulate    extensions    promises    tensor    dhost    powerful    statistical    magnitude    guide   

Project "DhostHunt" data sheet

The following table provides information about the project.

Coordinator
AARHUS UNIVERSITET 

Organization address
address: NORDRE RINGGADE 1
city: AARHUS C
postcode: 8000
website: www.au.dk

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 Denmark [DK]
 Total cost 207˙312 €
 EC max contribution 207˙312 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2019
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2020
 Duration (year-month-day) from 2020-10-01   to  2022-09-30

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    AARHUS UNIVERSITET DK (AARHUS C) coordinator 207˙312.00

Map

 Project objective

Currently, General Relativity (GR) and the standard model of particles physics are severely challenged by their inability to explain the late-time accelerated expansion of the Universe, known as the “dark energy” problem. The most promising scenarios aiming to explain it are the so--called scalar-tensor theories, corresponding to extensions of GR where gravity is enhanced through a new gravitational force mediated by a scalar field. The quest for phenomenological imprints of new scalar gravitational forces has been a central effort in cosmology and astrophysics over the last decade.

My goal is to introduce helioseismology as a test of unprecedented accuracy in the search for new gravitational forces in Nature. The focus will be on the most general scalar-field extensions of GR, known as “DHOST” scalar-tensor theories. The unique ability of solar pulsations to probe the finest details of gravity in the solar interior, combined with the extreme accuracy of helioseismic observations, promises an orders-of-magnitude improvement of previous constraints.

I will formulate the theoretical framework for adiabatic stellar pulsations in this context, and with sophisticated numerical techniques, I will model the associated solar pulsation eigenspectrum. A systematic statistical analysis will be devised to confront the predictions against observations making use of powerful helioseismic inversions, and derive the tightest constraints on the most general scalar-tensor theories up to date. The cosmological implications will be predicted, in accordance with ESA’s upcoming Euclid satellite mission.

The project will introduce a genuinely novel, interdisciplinary line of research that will strongly impact a broad spectrum of cosmology and astrophysics. The new constraints will be pivotal for our understanding of scalar-gravity interactions in Nature, and are expected to guide the future modelling of dark energy, and scalar field theories in general.

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The information about "DHOSTHUNT" are provided by the European Opendata Portal: CORDIS opendata.

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lastchecktime (2022-05-28 0:58:25) correctly updated