Project description
Advancing amplitude calculations for classical and quantum gravity
Calculations based on scattering amplitudes in quantum field theory have greatly improved the accuracy of evolutionary models for astrophysical binaries in general relativity. With the support of the Marie Skłodowska-Curie Actions programme, the AmpGravity project aims to push the boundaries of classical gravity further by executing calculations for binaries of spinning objects and developing non-perturbative methods. It will also advance the theoretical framework of quantum gravity, deriving consistency conditions from amplitudes together with dispersion relations. Using the quantum gravity formulations, it will obtain quantitative bounds for the classical problem of gravitational-wave physics, such as the stress tensor and tidal-response coefficients for black holes and neutron stars. Finally, universal behaviour of gravitational amplitudes will be integrated to derive properties of quantum gravity.
Objective
AmpGravity will employ amplitudes techniques to progress the fronts of classical (Objective 1) and quantum (Objective 2) gravity, while exploring the rich interplay of the two. Objective 1: Calculations based on scattering amplitudes in Quantum Field Theory (QFT) have significantly increased the accuracy of models for the evolution of astrophysical binaries in General Relativity. Kosmopoulos' results in particular have been imported into recent versions of the Effective-One-Body formalism, the main model used for gravitational-wave-template production by the LIGO, Virgo, and KAGRA collaboration. Kosmopoulos will push the state-of-the-art to meet the precision goals of the next-generation observatories by performing the necessary calculations for binaries of spinning objects and developing non-perturbative methods pertinent in the strong-coupling regime. Objective 2: Low-energy gravitational theories must obey consistency conditions, such as unitarity and causality, to be embedded in a complete theory of quantum gravity valid at all energy scales. Amplitudes in conjunction with dispersion relations are a natural language to derive such consistency conditions. Kosmopoulos will use these quantum-gravity considerations to obtain bounds on quantities of interest for the classical problem of gravitational-wave physics, such as the stress tensor and tidal-response coefficients for black holes and neutron stars. In turn, he will improve these methods by including known universal behavior of gravitational amplitudes, namely the eikonal limit established in a regime controlled by classical physics, and use them to derive properties of quantum gravity.
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.
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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.
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HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA)
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Topic(s)
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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
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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
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