Zobrazeno 1 - 10
of 93
pro vyhledávání: '"Valentin V Karasiev"'
Autor:
Dayou Yu, Deep Shankar Pandey, Joshua Hinz, Deyan Mihaylov, Valentin V Karasiev, S X Hu, Qi Yu
Publikováno v:
Machine Learning: Science and Technology, Vol 5, Iss 1, p 015031 (2024)
In this paper, we aim to explore novel machine learning (ML) techniques to facilitate and accelerate the construction of universal equation-Of-State (EOS) models with a high accuracy while ensuring important thermodynamic consistency. When applying M
Externí odkaz:
https://doaj.org/article/5271bdf845104c05b3198a5c50122220
Autor:
S. X. Hu, David T. Bishel, David A. Chin, Philip M. Nilson, Valentin V. Karasiev, Igor E. Golovkin, Ming Gu, Stephanie B. Hansen, Deyan I. Mihaylov, Nathaniel R. Shaffer, Shuai Zhang, Timothy Walton
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-11 (2022)
Atoms and molecules under extreme temperature and pressure can be investigated using dense plasmas achieved by laser-driven implosion. Here the authors report spectral change of copper in billions atmosphere pressure that can only be explained by a s
Externí odkaz:
https://doaj.org/article/100a9f3294524e6b946d42b21356bfc1
Publikováno v:
Physical Review B. 107
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a086ee647ec20b56182c4591e48855e
https://doi.org/10.1103/physrevb.107.155116
https://doi.org/10.1103/physrevb.107.155116
Publikováno v:
Physical Review E. 106
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9eb7d0eead8f59833b123adbc0049660
https://doi.org/10.1103/physreve.106.065202
https://doi.org/10.1103/physreve.106.065202
Publikováno v:
Nature. 600:E12-E14
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eaa3b6792b7626863bda98a3b2b3d4a1
https://doi.org/10.1038/s41586-021-04078-x
https://doi.org/10.1038/s41586-021-04078-x
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-8 (2020)
Nature Communications
Nature Communications
Superdense plasmas widely exist in planetary interiors and astrophysical objects such as brown-dwarf cores and white dwarfs. How atoms behave under such extreme-density conditions is not yet well understood, even in single-species plasmas. Here, we a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::45317dfef08c4a50e3581df27dc27237
https://doaj.org/article/51ec5a6d394c4a68bb41d8b2efd1b0d1
https://doaj.org/article/51ec5a6d394c4a68bb41d8b2efd1b0d1
Autor:
Shuai Zhang, Valentin V. Karasiev, Nathaniel Shaffer, Deyan I. Mihaylov, Katarina Nichols, Reetam Paul, R. M. N. Goshadze, Maitrayee Ghosh, Joshua Hinz, Reuben Epstein, Stefan Goedecker, S. X. Hu
A wide-range (0 to 1044.0 g/cm^{3} and 0 to 10^{9} K) equation-of-state (EOS) table for a CH_{1.72}O_{0.37}N_{0.086} quaternary compound has been constructed based on density-functional theory (DFT) molecular-dynamics (MD) calculations using a combin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb4b2a8e5081bea3f9e7797ab394dccd
Autor:
Suxing Hu, Valentin V. Karasiev, Gilbert Collins, V. N. Goncharov, Deyan Mihaylov, J. R. Rygg
Publikováno v:
Physical Review B. 104
We present a first-principles equation-of-state (EOS) table of deuterium aimed at improving the previously established first-principles equation-of-state table (FPEOS) [S. X. Hu et al., Phys. Rev. B 84, 224109 (2011); S. X. Hu et al., Phys. Plasmas 2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c2d35dd7cc5387a932a725f3a611506
https://doi.org/10.1103/physrevb.104.144104
https://doi.org/10.1103/physrevb.104.144104
Autor:
Valentin V. Karasiev, Suxing Hu
Publikováno v:
Physical Review E. 103
We present a free-energy density functional theory (DFT)-based methodology for optical property calculations of warm dense matter to cover a wide range of thermodynamic conditions and photon energies including the entire x-ray range. It uses Mermin-K
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::353962fbd6f998cd671bd2abfe6d3c1e
https://doi.org/10.1103/physreve.103.033202
https://doi.org/10.1103/physreve.103.033202
Publikováno v:
Physical review. E. 104(4-2)
A combined approach to study cold rarefied matter is introduced that includes a semianalytical method based on the free-energy minimization and ab initio calculations based on the finite-temperature density-functional theory. The approach is used to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e364d2c7673923c5edea0cd9e42dc0d
https://pubmed.ncbi.nlm.nih.gov/34781542
https://pubmed.ncbi.nlm.nih.gov/34781542