Journées de Rencontre Jeunes Chercheur·se·s 2026

Session

Theory

23 nov. 2026, 15:50

Présidents de session

Theory

• Quentin Bonnefoy (Uni. de Strasbourg & IPHC)

Theory

• Quentin Bonnefoy (Uni. de Strasbourg & IPHC)

72. Session overview

Quentin Bonnefoy (Uni. de Strasbourg & IPHC)

23/11/2026 15:50

99. Piezoaxionic Detection of Axion Dark Matter with Precessing Nuclear Spins

Baraa Yahya (IPhT (CEA-SACLAY))

23/11/2026 16:50

Theory

The piezoaxionic effect enables the conversion of axion-induced spin-dependent forces in polarized nuclei into measurable voltages in piezoelectric crystals. We propose a heterodyne detection scheme in which controlled nuclear spin precession mixes the axion oscillation frequency with the nuclear Larmor frequency. This generates sideband signals at shifted frequencies, allowing efficient...

122. Axion production in core-collapse supernovae

BASILE DEMAIRE-LEPAPE

23/11/2026 17:15

Theory

During the gravitational collapse of a massive star, the proto-neutron-star core reaches extreme densities and temperatures, providing an environment in which QCD axions can be efficiently produced through their interactions with baryonic matter. Axion emission may contribute significantly to the cooling of the newly formed neutron star, and observations of supernova cooling, in particular...

136. Is the spherical profile enough for gamma-ray dark matter indirect searches?

Margherita Scuderi (Laboratoire de physique théorique et hautes énergies (LPTHE), Sorbonne université)

23/11/2026 17:40

Theory

Recent results from Galactic surveys, such as Gaia, and from hydrodynamical cold dark matter simulations of Milky Way-like galaxies have shown that the galactic dark matter halo likely deviates from spherical symmetry. Its shape and orientation may constitute an additional significant source of uncertainty for indirect dark matter searches. In this work we develop a fast and light...