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- Institute of Astrophysics and Space SciencesPT465 papers
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63 papers · 1 filter
Magnetovolume Effects in Heusler Compounds via First-Principles Calculations
J. N. Gonçalves, J. S. Amaral, V. S. Amaral
Heusler alloys are promising for several applications, including magnetic refrigeration, due to high magnetocaloric and magnetovolume effects. One way to optimize this potential is…
Stretching and Kibble scaling regimes for Hubble-damped defect networks
C. J. A. P. Martins, I. Yu. Rybak, A. Avgoustidis +1
The cosmological evolution of topological defect networks can broadly be divided into two stages. At early times they are friction-dominated due to particle scattering and therefor…
Period spacings in red giants; III. Coupling factors of mixed modes
B. Mosser, C. Pinçon, K. Belkacem +2
The power of asteroseismology relies on the capability of global oscillations to infer the stellar structure. For evolved stars, we benefit from unique information directly carried…
Hyperfine local probe study of alkaline-earth manganites SrMnO3 and BaMnO3
J. N. Gonçalves, V. S. Amaral, J. G. Correia +3
We report perturbed angular correlation measurements with 111mCd/111Cd and 111In/111Cd probes, at the ISOLDE-CERN facility, in the manganite compounds BaMnO3 , with the 6H and 15R…
Quantitative recurrence for free semigroup actions
Maria Carvalho, Fagner B. Rodrigues, Paulo Varandas
We consider finitely generated free semigroup actions on a compact metric space and obtain quantitative information on Poincaré recurrence, average first return time and hitting fr…
Relativistic quantum speed limit time in dephasing noise
Salman Khan, Niaz Ali Khan
The behavior of quantum speed limit time (QSLT) for a single free spin particle described by Gaussian wavepackets in the framework of relativity under dephasing noise is inv…