Preeclampsia is the highest cause of maternal death. One program to reduce Maternal Mortality Rate (MMR) is by early detection. The incomplete history of maternal history that has occurred has led to the determination...
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We theoretically study, through combining the density functional theory and an unfolding technique, the electronic band structure and the charge doping effects for the deposition of potassium on multilayer FeSe films ...
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We theoretically study, through combining the density functional theory and an unfolding technique, the electronic band structure and the charge doping effects for the deposition of potassium on multilayer FeSe films grown on SrTiO3 (001) surface. These results form a theoretical baseline for further detailed studies of low-temperature electronic properties and their multiway quantum engineering of FeSe thin films. We explain the Fermi-surface topology observed in experiment and formulate the amount of doped electrons as a function of atomic K coverage. We show that the atomic K deposition efficiently dopes electrons to the top layer of FeSe. Both checkerboard- and pair-checkerboard-antiferromagnetic (AFM) FeSe layers show electron pockets at the M point and no Fermi pocket at the Γ point with moderate atomic K coverage. The electron transfer from the K adsorbate to the FeSe film introduces a strong electric field, which leads to a double-Weyl-cone structure at the M point in the Brillouin zone of checkerboard-AFM FeSe. We demonstrate that with experimentally accessible heavy-electron doping, an electronlike Fermi pocket will emerge at the Γ point, which should manifest itself in modulating the high-temperature superconductivity of FeSe thin films.
We consider the supercooled Stefan problem, which captures the freezing of a supercooled liquid, in one space dimension. A probabilistic reformulation of the problem allows us to define global solutions, even in the p...
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An active learning procedure called Deep Potential Generator (DP-GEN) is proposed for the construction of accurate and transferable machine learning-based models of the potential energy surface (PES) for the molecular...
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This paper is concerned with the pattern dynamics of the generalized nonlinear Schrodinger equations(NSEs)relatedwith various nonlinear physical problems in *** theoretical and numerical results show that the higher-o...
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This paper is concerned with the pattern dynamics of the generalized nonlinear Schrodinger equations(NSEs)relatedwith various nonlinear physical problems in *** theoretical and numerical results show that the higher-order nonlinear effects,acting as a Hamiltonian perturbation,break down the NSE integrability and lead to chaotic ***,coherent structures are destroyed and replaced by complex *** orbit crossings in the phase space and stochastic partition of energy in Fourier modes show typical characteristics of the stochastic *** investigations show that nonlinear phenomena,such as wave turbulence and laser filamentation,are associated with the homoclinic *** particular,we found that the unstable manifolds W(u)possessing the hyperbolic fixed point correspond to an initial phase θ=45° and 225° ,and the stable manifolds W(s)correspond toθ=135° and 315° .
We make a quantitative investigation on the tunneling and multi-photon channels in the transition regime from Keldysh parameter γ1 by numerically solving the time-dependent Schr?dinger equation(TDSE).A method is prop...
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We make a quantitative investigation on the tunneling and multi-photon channels in the transition regime from Keldysh parameter γ<1 to γ>1 by numerically solving the time-dependent Schr?dinger equation(TDSE).A method is proposed to separate the contributions of those ionization rate on the Keldysh parameterg,we identify a field independent transition point at γ≈2,which is different from the well-accepted consensus of γ≈1,from adiabatic to nonadiabatic regime.
We present total cross sections in the energy range 7-1000 keV amu(-1) for electron capture by alpha-particles in collision with atomic hydrogen in the ground state. We describe this process theoretically by performin...
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We present total cross sections in the energy range 7-1000 keV amu(-1) for electron capture by alpha-particles in collision with atomic hydrogen in the ground state. We describe this process theoretically by performing a close-coupling calculation using the symmetrized variational (SV) continuum distorted-wave (CDW) collision ansatz. SVCDW views the collision in a unique way by including both incoming and outgoing CDWs in the wavefunctions at all finite times, while simultaneously guaranteeing the correct coulombic asymptotes. We compare the SVCDW results with the available experimental data, with a dose-coupling calculation in which outgoing CDWs only are used to describe the collision, and with CDW perturbation theory. At high energies the three theoretical curves converge, while at lower energies the SVCDW results are shown to reproduce experiments more accurately. We also compare the SVCDW results with other coupled-channel calculations which use pseudo-states to describe the interaction of the target and the projectile with the continuum.
The elastic-scattering angular distributions and total reaction cross sections of ^(9,10,11,13,14)C projectiles were predicted using the obtained ^(12)C and ^(9)Be global optical model potentials,*** predictions were ...
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The elastic-scattering angular distributions and total reaction cross sections of ^(9,10,11,13,14)C projectiles were predicted using the obtained ^(12)C and ^(9)Be global optical model potentials,*** predictions were analyzed in detail by comparison with the available experimental *** results indicate that the ^(12)C and ^(9)Be global optical model potentials provide a satisfactory description of the elastic scattering data for the reactions induced by the ^(9,10,11,13)*** the neutron-rich carbon isotope ^(14)C,the elastic scattering can be well described by changing the real part radius parameter of the ^(12)C global optical model *** physical explanations for the observed differences are further discussed.
By performing large-scale density-matrix renormalization group simulations, we investigate a one-dimensional correlated bosonic lattice model with a synthetic spin-orbit coupling realized in recent experiments. In the...
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By performing large-scale density-matrix renormalization group simulations, we investigate a one-dimensional correlated bosonic lattice model with a synthetic spin-orbit coupling realized in recent experiments. In the insulating regime, this model exhibits a symmetry-protected topological phase. This symmetry-protected topological phase is stabilized by time-reversal symmetry and it is identified as a Haldane phase. We confirm our conclusions further by analyzing the entanglement spectrum. In addition, we find four conventional phases: a Mott insulating phase with no long range order, a ferromagnetic superfluid phase, a ferromagnetic insulating phase, and a density-wave phase.
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