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pro vyhledávání: '"A. Castin"'
Atom probe tomography (APT) is a powerful microscopy technique to characterize nano-sized clusters of the alloying elements in the bulk of reactor pressure vessel (RPV) steels. These clusters are known to dominantly determine the evolution of mechani
Externí odkaz:
http://arxiv.org/abs/2406.02973
Self-attention and masked self-attention are at the heart of Transformers' outstanding success. Still, our mathematical understanding of attention, in particular of its Lipschitz properties - which are key when it comes to analyzing robustness and ex
Externí odkaz:
http://arxiv.org/abs/2312.14820
Autor:
Castin, Yvan
Publikováno v:
Physical Review Letters, 2024, 133, pp.109301
We present simple arguments suggesting that H. Biss et al [PRL 128, 100401 (2022)] did not measure with the required accuracy the low-wavenumber curvature of the acoustic excitation branch of the ground-state unitary Fermi gas. This difficult-to-calc
Externí odkaz:
http://arxiv.org/abs/2312.07994
Publikováno v:
Comptes Rendus. Physique, 2023, 24 (S3), pp.187-239
It is generally accepted that the phonon gas of a superfluid always enters a weak coupling regime at sufficiently low temperatures, whatever the strength of the interactions between the underlying particles (constitutive of the superfluid). Thus, in
Externí odkaz:
http://arxiv.org/abs/2307.12705
Autor:
Castin, N., Bonny, G., Konstantinović, M. J., Bakaev, A., Bergner, F., Courilleau, C., Domain, C., Gómez-Ferrer, B., Hyde, J. M., Messina, L., Monnet, G., Pascuet, M. I., Radiguet, B., Serrano, M., Malerba, L.
Radiation-induced embrittlement of nuclear steels is one of the main limiting factors for safe long-term operation of nuclear power plants. In support of accurate and safe reactor pressure vessel (RPV) lifetime assessments, we developed a physics-bas
Externí odkaz:
http://arxiv.org/abs/2204.11441
Predicting incoming failures and scheduling maintenance based on sensors information in industrial machines is increasingly important to avoid downtime and machine failure. Different machine learning formulations can be used to solve the predictive m
Externí odkaz:
http://arxiv.org/abs/2204.10083
Autor:
Endo, Shimpei, Castin, Yvan
Publikováno v:
Comptes Rendus. Physique, Acad{\'e}mie des sciences (Paris), 2022, 23, pp.41
We calculate the fourth cluster coefficients of the homogeneous unitary spin 1/2 Fermi gas as functions of the internal-state mass ratio, over intervals constrained by the 3- or 4-body Efimov effect. For this we use our 2016 conjecture (validated for
Externí odkaz:
http://arxiv.org/abs/2203.00916
Autor:
Castin, N., Klupś, P., Konstantinović, M.J., Bonny, G., Pascuet, M.I., Moody, M., Malerba, L.
Publikováno v:
In Journal of Nuclear Materials January 2025 603
We propose to take advantage of the weak coupling of ground-state helium-3 nuclear spin to its environment to produce long-lived macroscopic quantum states, nuclear spin squeezed states, in a gas cell at room temperature. To perform a quantum non-dem
Externí odkaz:
http://arxiv.org/abs/2012.14686
Autor:
Castin, Yvan
Publikováno v:
Comptes Rendus Physique, Centre Mersenne, 2021, 21, pp.571
We consider a 3D homogeneous superfluid at low temperature $T$ with 2 types of excitations, gapless phonons with a linear dispersion relation at low wavenumber, and gapped quasiparticles with a quadratic dispersion relation around extrema. We calcula
Externí odkaz:
http://arxiv.org/abs/2007.10678