QUANTUM LANGEVIN MOLECULAR DYNAMIC DETERMINATION OF THE SOLAR-INTERIOR EQUATION OF STATE

被引：23

作者：

Dai, Jiayu ^{[1
]}

Hou, Yong ^{[1
]}

Yuan, Jianmin ^{[1
]}

机构：

[1] Natl Univ Def Technol, Dept Phys, Coll Sci, Changsha 410073, Hunan, Peoples R China

来源：

ASTROPHYSICAL JOURNAL | 2010年 / 721卷 / 02期

基金：

中国国家自然科学基金;

关键词：

dense matter; equation of state; plasmas; Sun: interior; STELLAR ENVELOPES; OPAL; OPACITIES; TEMPERATURES; PLASMAS; HELIOSEISMOLOGY; ABUNDANCES; HYDROGEN; TABLES;

D O I：

10.1088/0004-637X/721/2/1158

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The equation of state (EOS) of the solar interior is accurately and smoothly determined from ab initio simulations named quantum Langevin molecular dynamics in the pressure range of 58 Mbar <= P <= 4.6 x 10(5) Mbar at the temperature range of 1 eV <= T <= 1500 eV. The central pressure is calculated and compared with other models. The effect of heavy elements such as carbon and oxygen on the EOS is also discussed.

引用

页码：1158 / 1163

页数：6

共 44 条

[1] Solar models: Current epoch and time dependences, neutrinos, and helioseismological properties [J].

Bahcall, JN ;

Pinsonneault, MH ;

Basu, S .

ASTROPHYSICAL JOURNAL, 2001, 555 (02) :990-1012

[2] Helioseismology and solar abundances [J].

Basu, Sarbani ;

Antia, H. M. .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2008, 457 (5-6) :217-283

[3]

BERRINGTON KA, 1997, OPACITY PROJECT, V2

[4] Quantum molecular dynamics simulations of hot, dense hydrogen [J].

Collins, L ;

Kwon, I ;

Kress, J ;

Troullier, N ;

Lynch, D .

PHYSICAL REVIEW E, 1995, 52 (06) :6202-6219

[5] The equation of state for the solar interior [J].

Daeppen, Werner .

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 2006, 39 (17) :4441-4446

[6] Unified First Principles Description from Warm Dense Matter to Ideal Ionized Gas Plasma: Electron-Ion Collisions Induced Friction [J].

Dai, Jiayu ;

Hou, Yong ;

Yuan, Jianmin .

PHYSICAL REVIEW LETTERS, 2010, 104 (24)

[7] Large-scale efficient Langevin dynamics, and why it works [J].

Dai, Jiayu ;

Yuan, Jianmin .

EPL, 2009, 88 (02)

[8]

DAPPEN W, 1988, ASTROPHYS J, V332, P261, DOI 10.1086/166650

[9] THE EQUATION OF STATE OF THE SOLAR INTERIOR - A COMPARISON OF RESULTS FROM 2 COMPETING FORMALISMS [J].

DAPPEN, W ;

LEBRETON, Y ;

ROGERS, F .

SOLAR PHYSICS, 1990, 128 (01) :35-47

[10] The Sun as an equation-of-state laboratory [J].

Däppen, W ;

Nayfonov, A .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2000, 127 (02) :287-292

← 1 2 3 4 5 →