Zobrazeno 1 - 10
of 2 255
pro vyhledávání: '"P. Nataf"'
Age is the most difficult fundamental stellar parameter to infer for isolated stars. While isochrone-based ages are in general imprecise for both main sequence dwarfs and red giants, precise isochrone-based ages can be obtained for stars on the subgi
Externí odkaz:
http://arxiv.org/abs/2407.18307
Autor:
Nadaud, Kevin, Nataf, Guillaume F., Jaber, Nazir, Negulescu, Béatrice, Giovannelli, Fabien, Andreazza, Pascal, Birnal, Pierre, Wolfman, Jérôme
Lead-free materials based on the $\text{(Ba,Ca)(Zr,Ti)O}_{3}$ (BCZT) system exhibit excellent electromechanical properties that can be strongly modified by small amounts of dopants. Here, we use a high throughput strategy to unravel the influence of
Externí odkaz:
http://arxiv.org/abs/2407.09850
Autor:
Kunder, Andrea, Prudil, Zdenek, Skaggs, Claire, Reggiani, Henrique, Nataf, David M., Hughes, Joanne, Covey, Kevin R., Devine, Kathryn
RR Lyrae stars are excellent tracers of stellar populations for old, metal-poor components in the Milky Way Galaxy and the Local Group. Their luminosities have a metallicity-dependence, but determining spectroscopic [Fe/H] metallicities for RR Lyrae
Externí odkaz:
http://arxiv.org/abs/2407.01515
Palaeomagnetic evidence shows that the behaviour of the geodynamo has changed during geological times. Variations in the heat flux at the core-mantle boundary (CMB) due to mantle convection could be responsible. Previous studies, based on unrealistic
Externí odkaz:
http://arxiv.org/abs/2406.15083
Autor:
Nataf, Guillaume F., Volz, Sebastian, Ordonez-Miranda, Jose, Íñiguez-González, Jorge, Rurali, Riccardo, Dkhil, Brahim
Publikováno v:
Nature Reviews Materials (2024)
One of the most innovative possibilities offered by oxides is the use of heat currents for computational purposes. Towards this goal, phase-change oxides, including ferroelectrics, ferromagnets and related materials, could reproduce sources, logic un
Externí odkaz:
http://arxiv.org/abs/2405.10782
Autor:
D'Orazi, Valentina, Storm, Nicholas, Casey, Andrew R., Braga, Vittorio F., Zocchi, Alice, Bono, Giuseppe, Fabrizio, Michele, Sneden, Christopher, Massari, Davide, Giribaldi, Riano E., Bergemann, Maria, Campbell, Simon W., Casagrande, Luca, de Grijs, Richard, De Silva, Gayandhi, Lugaro, Maria, Zucker, Daniel B., Bragaglia, Angela, Feuillet, Diane, Fiorentino, Giuliana, Chaboyer, Brian, Dall'Ora, Massimo, Marengo, Massimo, Martínez-Vázquez, Clara E., Matsunaga, Noriyuki, Monelli, Matteo, Mullen, Joseph P., Nataf, David, Tantalo, Maria, Thevenin, Frederic, Vitello, Fabio R., Kudritzki, Rolf-Peter, Bland-Hawthorn, Joss, Buder, Sven, Freeman, Ken, Kos, Janez, Lewis, Geraint F., Lind, Karin, Martell, Sarah, Sharma, Sanjib, Stello, Dennis, Zwitter, Tomaž
Stellar mergers and accretion events have been crucial in shaping the evolution of the Milky Way (MW). These events have been dynamically identified and chemically characterised using red giants and main-sequence stars. RR Lyrae (RRL) variables can p
Externí odkaz:
http://arxiv.org/abs/2405.04580
Autor:
Nataf, Frédéric, Parolin, Emile
Domain decomposition (DD) methods are a natural way to take advantage of parallel computers when solving large scale linear systems. Their scalability depends on the design of the coarse space used in the two-level method. The analysis of adaptive co
Externí odkaz:
http://arxiv.org/abs/2404.02758
Autor:
Botzung, Thomas, Nataf, Pierre
We provide numerical evidence of the Nagaoka's theorem in the $\mathrm{SU}(N)$ Fermi-Hubbard model on various cluster geometries, such as the square, the honeycomb and the triangular lattices. In particular, by diagonalizing several finite-size clust
Externí odkaz:
http://arxiv.org/abs/2403.11588
This paper introduces a fully algebraic two-level additive Schwarz preconditioner for general sparse large-scale matrices. The preconditioner is analyzed for symmetric positive definite (SPD) matrices. For those matrices, the coarse space is construc
Externí odkaz:
http://arxiv.org/abs/2401.03915
Autor:
Nadaud, Kevin, Nataf, Guillaume F., Jaber, Nazir, Bah, Micka, Negulescu, Béatrice, Andreazza, Pascal, Birnal, Pierre, Wolfman, Jérôme
Publikováno v:
Appl. Phys. Lett. 124, 042901 (2024)
Sub-coercive field non-linearities in $0.5(\text{Ba}_{0.7}\text{Ca}_{0.3}\text{TiO}_{3})-0.5(\text{BaZr}_{0.2}\text{Ti}_{0.8}\text{O}_{3})$ (BCTZ 50/50) thin film elaborated using pulsed laser deposition are studied using permittivity and phase angle
Externí odkaz:
http://arxiv.org/abs/2310.16565