Results 71 to 80 of about 1,581 (150)

Proposing a Governance Model for Environmental Crises

open access: yesLand, 2023
During August 2021, a wildfire outbreak in Evia, Greece’s second largest island, resulted in a major environmental and economic crisis. Apart from biodiversity and habitat loss, the disaster triggered a financial crisis because it wiped out wood ...
Evangelia Karasmanaki   +12 more
doaj   +1 more source

Neutron Drops and Skyrme Energy-Density Functionals

open access: yes, 1995
The J$^{\pi}$=0$^+$ ground state of a drop of 8 neutrons and the lowest 1/2$^-$ and 3/2$^-$ states of 7-neutron drops, all in an external well, are computed accurately with variational and Green's function Monte Carlo methods for a Hamiltonian containing
A. Smerzi   +22 more
core   +1 more source

Spin-orbit and tensor interactions in homogeneous matter of nucleons: accuracy of modern many-body theories [PDF]

open access: yes, 2004
We study the energy per particle of symmetric nuclear matter and pure neutron matter using realistic nucleon--nucleon potentials having non central tensor and spin--orbit components, up to three times the empirical nuclear matter saturation density ...
Bombaci, I.   +3 more
core   +2 more sources

Strong Electrostatic Control of Excitonic Features in MoS2 by a Free‐Standing Ultrahigh‐κ Ferroelectric Perovskite

open access: yesAdvanced Functional Materials, Volume 34, Issue 52, December 23, 2024.
This work demonstrates the electrostatic control of photoluminescence in monolayer MoS2 using free‐standing BaTiO3 (BTO) at room temperature. BTO enables highly tunable exciton emission with minimal gate voltage. It induces large peak emission shifts and tunable A trion binding energy.
Thomas Pucher   +9 more
wiley   +1 more source

Quantum Monte Carlo Calculations of Light Nuclei [PDF]

open access: yes, 2001
Accurate quantum Monte Carlo calculations of ground and low-lying excited states of light p-shell nuclei are now possible for realistic nuclear Hamiltonians that fit nucleon-nucleon scattering data. At present, results for more than 30 different (J^pi;T)
Pieper, Steven C., Wiringa, R. B.
core   +2 more sources

An improved grid-forming control method with adaptive virtual impedance combining current limitation and transient stability improvement

open access: yesInternational Journal of Electrical Power & Energy Systems
The virtual impedance (VI) control method is widely used to limit fault current for grid-forming converter (GFMC). However, in this article, it is found that the VI deteriorates the transient synchronization stability of the GFMC under grid faults.
Xiaoping Zhou   +8 more
doaj   +1 more source

Green's function Monte Carlo calculations of the electromagnetic and neutral-weak response functions in the quasi-elastic sector

open access: yes, 2016
A quantitative understanding of neutrino-nucleus interactions is demanded to achieve precise measurement of neutrino oscillations, and hence the determination of their masses.
Lovato, Alessandro
core   +1 more source

Microwave-Assisted Routes for the Synthesis of Complex Functional Oxides

open access: yesInorganics, 2015
The synthesis of complex functional inorganic materials, such as oxides, can be successfully performed by using microwave irradiation as the source of heat.
Jesús Prado-Gonjal   +2 more
doaj   +1 more source

Study of a hard-core boson model with ring-only interactions

open access: yes, 2010
We present a Quantum Monte Carlo study of a hardcore boson model with ring-only exchanges on a square lattice, where a $K_1$ term acts on 1$\times$1 plaquettes and a $K_2$ term acts on 1$\times$2 and 2$\times$1 plaquettes.
Motrunich, Olexei I., Tay, Tiamhock
core   +1 more source

Quantum Monte Carlo calculations of weak transitions in $A\,$=$\,$6--10 nuclei

open access: yes, 2017
Ab initio calculations of the Gamow-Teller (GT) matrix elements in the $\beta$ decays of $^6$He and $^{10}$C and electron captures in $^7$Be are carried out using both variational and Green's function Monte Carlo wave functions obtained from the Argonne $
Baroni, A.   +6 more
core   +1 more source

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