2018
DOI: 10.1088/1361-648x/aa9e29
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Dynamic electron–ion collisions and nuclear quantum effects in quantum simulation of warm dense matter

Abstract: The structural, thermodynamic and transport properties of warm dense matter (WDM) are crucial to the fields of astrophysics and planet science, as well as inertial confinement fusion. WDM refers to the states of matter in a regime of temperature and density between cold condensed matter and hot ideal plasmas, where the density is from near-solid up to ten times solid density, and the temperature between 0.1 and 100 eV. In the WDM regime, matter exhibits moderately or strongly coupled, partially degenerate prop… Show more

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Cited by 22 publications
(14 citation statements)
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“…µ[n(r, t)] = µ id [n(r, t)] + µ xc [n(r, t)] + eφ(r, t), (63) whereas the last term is due to the total field -the sum of external field as well as mean field (Hartree) contributions which is the solution of Poisson's equation, i.e. eφ = U tot .…”
Section: H Limitations and Further Improvement Of Qhd: Nonlocal And mentioning
confidence: 99%
See 1 more Smart Citation
“…µ[n(r, t)] = µ id [n(r, t)] + µ xc [n(r, t)] + eφ(r, t), (63) whereas the last term is due to the total field -the sum of external field as well as mean field (Hartree) contributions which is the solution of Poisson's equation, i.e. eφ = U tot .…”
Section: H Limitations and Further Improvement Of Qhd: Nonlocal And mentioning
confidence: 99%
“…[56], electronic force fields [57,58] and various variants of quantum MD, e.g. [59][60][61][62][63].…”
Section: Introductionmentioning
confidence: 99%
“…While important as a physical effect, taking it into account is computationally highly expensive due to the aforementioned complexities of WDM modeling. Therefore, the classical Rayleigh model (Plyukhin (2008)) is often used to approximate the friction in terms of free electrons (Dai et al (2010); Kang & Dai (2018)). This is a crude approximation that misses essential quantum and exchange-correlation effects.…”
Section: Applicationsmentioning
confidence: 99%
“…Another important property is the friction force acting upon an ion due to the surrounding electrons. Although it was recently found that the inclusion of dissipation effects due to friction is critical for an adequate description of the dynamics of non-ideal ions in WDM and in dense plasmas [5,[42][43][44][45], the friction coefficient at these parameters has not been investigated so far. Instead, a simplified expression for the friction coefficient within the Rayleigh model [46] was used [5,42,43].…”
Section: Introductionmentioning
confidence: 99%
“…Although it was recently found that the inclusion of dissipation effects due to friction is critical for an adequate description of the dynamics of non-ideal ions in WDM and in dense plasmas [5,[42][43][44][45], the friction coefficient at these parameters has not been investigated so far. Instead, a simplified expression for the friction coefficient within the Rayleigh model [46] was used [5,42,43]. This is potentially worrying, as this approximation for the friction coefficient does not take into account electronic degeneracy and correlation effects.…”
Section: Introductionmentioning
confidence: 99%