21,531 research outputs found
Complexity growth rates for AdS black holes in massive gravity and gravity
The "complexity = action" duality states that the quantum complexity is equal
to the action of the stationary AdS black holes within the Wheeler-DeWitt patch
at late time approximation. We compute the action growth rates of the neutral
and charged black holes in massive gravity and the neutral, charged and
Kerr-Newman black holes in gravity to test this conjecture. Besides, we
investigate the effects of the massive graviton terms, higher derivative terms
and the topology of the black hole horizon on the complexity growth rate.Comment: 11 pages, no figur
Electron-nuclear entanglement in the cold lithium gas
We study the ground-state entanglement and thermal entanglement in the
hyperfine interaction of the lithium atom. We give the relationship between the
entanglement and both temperature and external magnetic fields.Comment: 7 pages, 3 figure
Neutron-proton effective mass splitting in neutron-rich matter at normal density from analyzing nucleon-nucleus scattering data within an isospin dependent optical model
The neutron-proton effective -mass splitting in asymmetric nucleonic
matter of isospin asymmetry and normal density is found to be
from analyzing
globally 1088 sets of reaction and angular differential cross sections of
proton elastic scattering on 130 targets with beam energies from 0.783 MeV to
200 MeV, and 1161 sets of data of neutron elastic scattering on 104 targets
with beam energies from 0.05 MeV to 200 MeV within an isospin dependent
non-relativistic optical potential model. It sets a useful reference for
testing model predictions on the momentum dependence of the nucleon isovector
potential necessary for understanding novel structures and reactions of rare
isotopes.Comment: Published version, Physics Letters B743 (2015) 40
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