Project description
Gravitational wave measurements decoding early universe events
The discovery of gravitational waves by LIGO and Virgo has opened new possibilities for exploring the universe. Space-based detectors, like the LISA mission, offer a chance to use these waves to investigate particle physics beyond the Standard Model. LISA focuses on first-order phase transitions, which could be a sign of new physics not explained by the Standard Model. The ERC-funded CoCoS project aims to create highly accurate calculations of gravitational waves from these transitions using advanced computer simulations. By studying how bubbles form and collide during phase transitions, CoCoS will improve our understanding of the early universe. This research will complement ongoing projects with the high-luminosity LHC and LISA.
Objective
The discovery of gravitational waves by the LIGO and Virgo collaborations opened a new window to the Universe. Space-based gravitational wave detectors, such as the LISA mission, enable an exciting opportunity: using gravitational waves from the very early Universe in the search for beyond-the-Standard-Model (BSM) particle physics.
The LISA science case identifies first order phase transitions as the most promising source of cosmological gravitational waves. There are no phase transitions in the Standard Model, and observation of a phase transition would be revolutionary: a direct signal of BSM physics. It is absolutely necessary to have accurate and reliable theoretical control of the gravitational wave production in BSM phase transitions in order to fully realize the science potential of the observations.
The overarching goal of CoCoS is to calculate, for a given BSM theory, the resulting gravitational wave power spectrum to 10--20% accuracy. This is more than an order of magnitude better than the current state of the art, where accuracy is limited by uncertainties inherent in standard perturbative approaches. In CoCoS these problems are avoided by using several novel and state-of-the-art simulation techniques.
A first order phase transition in the early Universe proceeds through supercooling, critical bubble nucleation, and growth and collision of the bubbles. Bubbles cause pressure waves, shocks and turbulence, which remains long after the transition has completed and create gravitational waves. In CoCoS the stages of the phase transitions are studied with innovative computational methods: effective field theory approach, which optimally combines perturbation theory and lattice simulations, and state-of-the-art viscous relativistic hydrodynamics.
The high-luminosity LHC and LISA will be operational at the same time, searching for complementary aspects of new physics. The accuracy reached in CoCoS is necessary to fully utilize this synergy.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
You need to log in or register to use this function
We are sorry... an unexpected error occurred during execution.
You need to be authenticated. Your session might have expired.
Thank you for your feedback. You will soon receive an email to confirm the submission. If you have selected to be notified about the reporting status, you will also be contacted when the reporting status will change.
Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
-
HORIZON.1.1 - European Research Council (ERC)
MAIN PROGRAMME
See all projects funded under this programme
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-ERC - HORIZON ERC Grants
See all projects funded under this funding scheme
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) ERC-2023-ADG
See all projects funded under this callHost institution
Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
00014 HELSINGIN YLIOPISTO
Finland
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.