Zobrazeno 1 - 10
of 119
pro vyhledávání: '"Azadi, Sam"'
Autor:
Crépisson, Céline, Amouretti, Alexis, Harmand, Marion, Sanloup, Chrystèle, Heighway, Patrick, Azadi, Sam, McGonegle, David, Campbell, Thomas, Chin, David Alexander, Smith, Ethan, Hansen, Linda, Forte, Alessandro, Gawne, Thomas, Lee, Hae Ja, Nagler, Bob, Shi, YuanFeng, Fiquet, Guillaume, Guyot, François, Makita, Mikako, Benuzzi-Mounaix, Alessandra, Vinci, Tommaso, Miyanishi, Kohei, Ozaki, Norimasa, Pikuz, Tatiana, Nakamura, Hirotaka, Sueda, Keiichi, Yabuuchi, Toshinori, Yabashi, Makina, Wark, Justin S., Polsin, Danae N., Vinko, Sam M.
We present measurements on Fe$_2$O$_3$ amorphization and melt under laser-driven shock compression up to 209(10) GPa via time-resolved in situ x-ray diffraction. At 122(3) GPa, a diffuse signal is observed indicating the presence of a non-crystalline
Externí odkaz:
http://arxiv.org/abs/2408.17204
Modelling of warm dense hydrogen via explicit real time electron dynamics: Dynamic structure factors
Autor:
Svensson, Pontus, Aziz, Yusuf, Dornheim, Tobias, Azadi, Sam, Hollebon, Patrick, Skelt, Amy, Vinko, Sam M., Gregori, Gianluca
We present two methods for computing the dynamic structure factor for warm dense hydrogen without invoking either the Born-Oppenheimer approximation or the Chihara decomposition, by employing a wave packet description which resolves the electron dyna
Externí odkaz:
http://arxiv.org/abs/2407.08875
We present a study of spin-unpolarized and spin-polarized two-dimensional uniform electron liquids using variational and diffusion quantum Monte Carlo (VMC and DMC) methods with Slater-Jastrow-backflow trial wave functions. Ground-state VMC and DMC e
Externí odkaz:
http://arxiv.org/abs/2405.00425
Autor:
Forte, Alessandro, Gawne, Thomas, El-Din, Karim K. Alaa, Humphries, Oliver S., Preston, Thomas R., Crépisson, Céline, Campbell, Thomas, Svensson, Pontus, Azadi, Sam, Heighway, Patrick, Shi, Yuanfeng, Chin, David A., Smith, Ethan, Baehtz, Carsten, Bouffetier, Victorien, Höppner, Hauke, McGonegle, David, Harmand, Marion, Collins, Gilbert W., Wark, Justin S., Polsin, Danae N., Vinko, Sam M.
Resonant inelastic x-ray scattering (RIXS) is a widely used spectroscopic technique, providing access to the electronic structure and dynamics of atoms, molecules, and solids. However, RIXS requires a narrow bandwidth x-ray probe to achieve high spec
Externí odkaz:
http://arxiv.org/abs/2402.00039
Variational and diffusion quantum Monte Carlo (VMC and DMC) methods with Slater-Jastrow-backflow trial wave functions are used to study the spin-polarized three-dimensional uniform electron fluid. We report ground state VMC and DMC energies in the de
Externí odkaz:
http://arxiv.org/abs/2306.13426
The variational and diffusion quantum Monte Carlo methods are used to calculate the correlation energy of the paramagnetic three-dimensional homogeneous electron gas at intermediate to high density. Ground state energies in finite cells are determine
Externí odkaz:
http://arxiv.org/abs/2209.10227
Autor:
Azadi, Sam, Drummond, N. D.
Publikováno v:
Phys. Rev. B (2022)
Variational and diffusion quantum Monte Carlo methods are employed to investigate the zero-temperature phase diagram of the three-dimensional homogeneous electron gas at very low density. Fermi fluid and body-centered cubic Wigner crystal ground stat
Externí odkaz:
http://arxiv.org/abs/2201.08743
Publikováno v:
Phys. Rev. Lett. 127, 086401 (2021)
According to Landau's Fermi liquid theory, the main properties of the quasiparticle excitations of an electron gas are embodied in the effective mass $m^*$, which determines the energy of a single quasiparticle, and the Landau interaction function, w
Externí odkaz:
http://arxiv.org/abs/2105.09139
Publikováno v:
J. Chem. Phys. Vol. 153, Issue 20 (2020)
We report a numerical study of the equation of state of crystalline body-centered-cubic (BCC) hydrogen, tackled with a variety of complementary many-body wave function methods. These include continuum stochastic techniques of fixed-node diffusion and
Externí odkaz:
http://arxiv.org/abs/2009.00709
We implement the GW space-time method at finite temperatures, in which the Green's function G and the screened Coulomb interaction W are represented in the real space on a suitable mesh and in imaginary time in terms of Chebyshev polynomials, paying
Externí odkaz:
http://arxiv.org/abs/2006.06308