DhostHunt SIGNED
A new avenue in the hunt for dark energy
Total Cost €
0EC-Contrib. €
0Partnership
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0DhostHunt 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.
Project "DhostHunt" data sheet
The following table provides information about the project.
| Coordinator |
AARHUS UNIVERSITET
Organization address contact info |
| 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.
| # | ||||
|---|---|---|---|---|
| 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.