|
Statut |
Confirmé |
|
Série |
RENC-THEO |
|
Domaines |
hep-th |
|
Date |
Jeudi 17 Fevrier 2022 |
|
Heure |
11:45 |
|
Institut |
IHP |
|
Salle |
314, zoom link: https://ecolepolytechnique.zoom.us/j/85135692880. |
|
Nom de l'orateur |
Oblak |
|
Prenom de l'orateur |
Blagoje |
|
Addresse email de l'orateur |
|
|
Institution de l'orateur |
Polytechnique |
|
Titre |
Gyroscopic Gravitational Memory |
|
Résumé |
In this talk, I argue that gravitational waves cause freely falling
gyroscopes to precess relative to fixed distant stars, extending the
stationary Lense-Thirring effect. The precession rate decays as the square
of the inverse distance to the source, and is proportional to a suitable
Noether current for dual asymptotic symmetries at null infinity.
Integrating the rate over time yields a net rotation that may be seen as
gravitational memory effect encoded by the gyroscope’s orientation. Its
angle reproduces the known spin memory effect but also contains an extra
contribution due to the generator of gravitational electric-magnetic
duality. |
|
Numéro de preprint arXiv |
|
|
Commentaires |
Youtube link: https://youtu.be/kWwauiV6kS0 |
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Fichiers attachés |
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