HEИндивидуална стипендия2024–2026

GWtheory · Gravitational Wave Theory: Feynman Toolbox for Einstein Gravity

„Хоризонт Европа“ — Действия „Мария Склодовска-Кюри“

Период: 2024-04-01 → 2026-03-31
Финансиране от ЕС: 214 934 €
Участници: 1
Схема: HORIZON-TMA-MSCA-PF-EF

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Накратко на български

Гравитационните вълни, създавани при взаимодействието на черни дупки или неутронни звезди, се анализират чрез нови математически методи от физиката на частиците. Тези прецизни модели помагат за по-точното определяне на свойствата на космическите обекти и проверка на теорията на Айнщайн.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Gravitational Wave Theory: Feynman Toolbox for Einstein Gravity

The historic observations of gravitational waves have transformed fundamental physics. To fully exploit the discovery potential of the current and future gravitational-wave observatories, such as LIGO-Virgo-KAGRA, the space-borne LISA mission, and the ground-based Einstein Telescope, highly accurate theoretical waveform templates are an absolute priority. These templates are indispensable for extracting the physical properties of astrophysical sources, testing Einstein’s theory of general relativity precisely, and searching for potential signatures of new physics beyond the standard model. At the heart of gravitational-wave modelling lies the relativistic two-body problem - the description of how two compact objects, such as black holes or neutron stars, orbit and interact with each other, emitting gravitational waves. This is a notoriously difficult challenge in physics, as it requires solving Einstein’s field equations, a set of non-linear differential equations. Traditional analytical methods struggle at high orders of precision, while purely numerical simulations are computationally expensive and difficult to extend to the long inspiral phases relevant for future space-based observatories. The core scientific objective of the GWtheory project was to advance the analytical precision frontier of gravitational-wave theory by importing and adapting modern computational tools from particle physics and quantum field theory. More specifically, the project aimed to develop new methods for computing multi-loop Feynman integrals — the mathematical building blocks of scattering calculations — and to apply these methods to the classical two-body problem. In doing so, the project sought to achieve new analytic results for the two-body grvitational dynamics at previously unreached orders of precision.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

Since the discovery of Gravitational Waves from a binary black hole merger in 2016, we have entered a new era in exploring the Universe. Binary black hole and neutron star mergers are the primary sources of gravitational waves. High-accuracy theoretical predictions for the motion of compact binary systems play a fundamental role in interpreting data and maximizing discovery potential for present and future observations, such as LIGO-Virgo-Kagra. I have played a pioneering role in the development of a new framework aiming at efficiently calculating gravitational-wave observables using modern theoretical tools initially invented for CERN’s LHC experiments. Using this framework, we have obtained the most precise theoretical predictions for the gravitational dynamics of binary inspirals to date.This project aims to push the precision frontier for theoretical predictions for the gravitational observables of inspiralling binary systems. This will be achieved by innovating computational methods for classical gravitational dynamics using cutting-edge techniques from quantum field theory and modern mathematics, including Feynman integrals, effective field theory, special functions and applied algebraic geometry. We will derive a set of new precision corrections for the dynamics of inspiralling binaries, including spin and finite-size effects, beyond the current state of the art. These new results will be used to construct more accurate waveform models. The latter are crucial to understanding long-standing questions in fundamental physics and astronomy with next-generation gravitational-wave observations, such as the LISA and the Einstein Telescope in Europe, which in turn may provide fundamental insights into Einstein's theory of gravity.

Оригинален текст от CORDIS (на английски).

Участници

KOBENHAVNS UNIVERSITET · KOBENHAVNКоординаторДания