Project description
Detecting primordial features in cosmic data
Primordial features (PFs) are scale-dependent deviations (often oscillations) in the standard spectra of primordial density perturbations. They arise from disturbances in early-universe models and may reveal new energy scales and properties of the inflaton field. Supported by the Marie Skłodowska-Curie Actions programme, the EFFORTS project will enhance the search for PFs using current and future cosmological data. It will evaluate PF models with the latest Cosmic Microwave Background and Large Scale Structure observations, focusing on both the power spectrum and bispectrum. The project will also develop an efficient code and pipeline to detect these signals in data from the upcoming LISA experiment.
Objective
Primordial features (PFs) are scale-dependent deviations from the leading-order, scale-invariant spectra of primordial density perturbations, often manifesting as oscillations. These PFs arise from disturbances in the potential or internal space of primordial Universe models, which alter the background evolution from the leading trajectory. While the amplitudes of these features are uncertain, their presence is likely, and detecting them would offer insights into the physics of the primordial Universe, such as new energy scales and heavier degrees of freedom coupled to the inflaton field. This proposal aims to maximize the efficiency of the search for PFs in current and future cosmological data. I will test PF models against the most recent Cosmic Microwave Background and Large Scale Structure data for the first time using both the power spectrum and bispectrum of primordial fluctuations. At smaller scales, PF signals must be much larger to be detected through the Stochastic Gravitational Wave Background (SGWB) sourced by large scalar fluctuations. Focusing on the future LISA experiment, I will build an efficient code and pipeline to detect these signals in future data. On the theoretical side, I will also explore the contribution of loop corrections in these models, which may dominate over tree-level results, and design novel non-perturbative techniques to compute the spectra in these cases. This project will set the state of the art for analyzing PFs of any amplitude and at any cosmological scales.
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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.
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HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA)
MAIN PROGRAMME
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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-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships
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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) HORIZON-MSCA-2024-PF-01
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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.
1211 GENEVE 23
Switzerland
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.