DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Exchange–correlation entropy from the generalized thermal adiabatic connection

Journal Article · · Journal of Chemical Physics
DOI: https://doi.org/10.1063/5.0196650 · OSTI ID:2404880

Warm dense matter is a highly energetic phase characterized by strong correlations, thermal effects, and quantum mechanical electrons. Thermal density functional theory is commonly used in simulations of this challenging phase, driving the development of temperature-dependent approximations to the exchange–correlation free energy. Approaches using the adiabatic connection formula are well known at zero temperature and have been recently leveraged at non-zero temperatures as well. In this work, a generalized thermal adiabatic connection (GTAC) formula is proposed, introducing a fictitious temperature parameter. This allows extraction of the exchange–correlation entropy SXC using simulated interaction strength scaling. Here, this procedure uses a Hellmann–Feynman approach to express the exchange–correlation entropy in terms of a temperature- and interaction strength-dependent exchange–correlation potential energy. In addition, analysis of SXC as a function of interaction strength suggests new forms for approximations, and GTAC itself offers a new framework for exploring both the exact and approximate interplay of temperature, density, and interaction strength across a wide range of conditions.

Research Organization:
University of California, Merced, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0003984; NA0003866
OSTI ID:
2404880
Journal Information:
Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 15 Vol. 160; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

References (57)

Shock physics in warm dense matter: A quantum hydrodynamics perspective journal January 2022
Density functionals for exchange and correlation energies: Exact conditions and comparison of approximations journal February 1994
Frontiers and Challenges in Warm Dense Matter book January 2014
Density functional theory at finite temperatures journal May 1988
The exchange-correlation energy of a metallic surface journal December 1975
Experimental methods for warm dense matter research journal January 2018
Møller–Plesset and Density-Fixed Adiabatic Connections for a Model Diatomic System at Different Correlation Regimes journal August 2023
Bound-State Breaking and the Importance of Thermal Exchange–Correlation Effects in Warm Dense Hydrogen journal December 2023
Density functional theory calculations of continuum lowering in strongly coupled plasmas journal March 2014
Inertially confined fusion plasmas dominated by alpha-particle self-heating journal April 2016
Melting curve of superionic ammonia at planetary interior conditions journal May 2023
Thermal transport in warm dense matter revealed by refraction-enhanced x-ray radiography with a deep-neural-network analysis journal May 2023
Pulsed-power-driven high energy density physics and inertial confinement fusion research journal May 2005
Generalized adiabatic connection in density functional theory journal December 1998
Adiabatic connection from accurate wave-function calculations journal March 2000
Approximate bounds and temperature dependence of adiabatic connection integrands for the uniform electron gas journal April 2022
Electronic density response of warm dense matter journal March 2023
The colliding planar shocks platform to study warm dense matter at the National Ignition Facility journal June 2023
Entropy is a good approximation to the electronic (static) correlation energy journal November 2023
A Massive Core in Jupiter Predicted from First-Principles Simulations journal October 2008
The surface energy of a bounded electron gas journal August 1974
Lawson Criterion for Ignition Exceeded in an Inertial Fusion Experiment journal August 2022
Inhomogeneous Electron Gas journal November 1964
Thermal Properties of the Inhomogeneous Electron Gas journal March 1965
Self-Consistent Equations Including Exchange and Correlation Effects journal November 1965
Hellmann-Feynman, virial, and scaling requisites for the exact universal density functionals. Shape of the correlation potential and diamagnetic susceptibility for atoms journal October 1985
Thermal hybrid exchange-correlation density functional for improving the description of warm dense matter journal June 2020
Meta-GGA exchange-correlation free energy density functional to increase the accuracy of warm dense matter simulations journal February 2022
Exchange and correlation in atoms, molecules, and solids by the spin-density-functional formalism journal May 1976
Extension of exact-exchange density functional theory of solids to finite temperatures journal April 2010
Generalized-gradient-approximation noninteracting free-energy functionals for orbital-free density functional calculations journal September 2012
Exact conditions on the temperature dependence of density functionals journal May 2016
Connection formulas for thermal density functional theory journal May 2016
Exact thermal density functional theory for a model system: Correlation components and accuracy of the zero-temperature exchange-correlation approximation journal June 2016
Thermal stitching: Combining the advantages of different quantum fermion solvers journal August 2018
Finite-temperature density-functional-theory investigation on the nonequilibrium transient warm-dense-matter state created by laser excitation journal January 2021
Unraveling the intrinsic atomic physics behind x-ray absorption line shifts in warm dense silicon plasmas journal March 2021
Design of an inertial fusion experiment exceeding the Lawson criterion for ignition journal August 2022
Experimental achievement and signatures of ignition at the National Ignition Facility journal August 2022
Time-dependent density-functional-theory calculations of the nonlocal electron stopping range for inertial confinement fusion applications journal September 2023
Importance of finite-temperature exchange correlation for warm dense matter calculations journal June 2016
Complex Behavior of Fluid Lithium under Extreme Conditions journal August 2008
Shock Compression of Quartz to 1.6 TPa: Redefining a Pressure Standard journal November 2009
Exact Conditions in Finite-Temperature Density-Functional Theory journal October 2011
Probing the Interiors of the Ice Giants: Shock Compression of Water to 700 GPa and 3.8     g / cm 3 journal February 2012
Accurate Homogeneous Electron Gas Exchange-Correlation Free Energy for Local Spin-Density Calculations journal February 2014
Ab Initio Simulations for the Ion-Ion Structure Factor of Warm Dense Aluminum journal April 2014
High-Precision Shock Wave Measurements of Deuterium: Evaluation of Exchange-Correlation Functionals at the Molecular-to-Atomic Transition journal January 2017
Warm Dense Matter Demonstrating Non-Drude Conductivity from Observations of Nonlinear Plasmon Damping journal May 2017
Continuum Lowering and Fermi-Surface Rising in Strongly Coupled and Degenerate Plasmas journal August 2017
Ab initio Exchange-Correlation Free Energy of the Uniform Electron Gas at Warm Dense Matter Conditions journal September 2017
Nonempirical Semilocal Free-Energy Density Functional for Matter under Extreme Conditions journal February 2018
Development of a machine-learning-based ionic-force correction model for quantum molecular dynamic simulations of warm dense matter journal August 2023
Linear-response time-dependent density functional theory approach to warm dense matter with adiabatic exchange-correlation kernels journal May 2023
Exact Generalized Kohn-Sham Theory for Hybrid Functionals journal May 2020
Direct observation of an abrupt insulator-to-metal transition in dense liquid deuterium journal June 2015
Experimental achievement and signatures of ignition at the National Ignition Facility
  • Young, A. B. Zylstra, A. L. Kritcher, O. A. Hurricane, D. A. Callahan, J. E. Ralph, D. T. Casey, A. Pak, O. L. Landen, B. Bachmann, K. L. Baker, L. Berzak Hopkins, S. D. Bhandarkar, J. Biener, R. M. Bionta, N. W. Birge, T. Braun, T. M. Briggs, P. M. Celliers, H. Chen, C. Choate, D. S. Clark, L. Divol, T. Döppner, D. Fittinghoff, M. J. Edwards, M. Gatu Johnson, N. Gharibyan, S. Haan, K. D. Hahn, E. Hartouni, D. E. Hinkel, D. D. Ho, M. Hohenberger, J. P. Holder, H. Huang, N. Izumi, J. Jeet, O. Jones, S. M. Kerr, S. F. Khan, H. Geppert Kleinrath, V. Geppert Kleinrath, C. Kong, K. M. Lamb, S. Le Pape, N. C. Lemos, J. D. Lindl, B. J. MacGowan, A. J. Mackinnon, A. G. MacPhee, E. V. Marley, K. Meaney, M. Millot, A. S. Moore, K. Newman, J. -M. G. Di Nicola, A. Nikroo, R. Nora, P. K. Patel, N. G. Rice, M. S. Rubery, J. Sater, D. J. Schlossberg, S. M. Sepke, K. Sequoia, S. J. Shin, M. Stadermann, S. Stoupin, D. J. Strozzi, C. A. Thomas, R. Tommasini, C. Trosseille, E. R. Tubman, P. L. Volegov, C. R. Weber, C. Wild, D. T. Woods, S. T. Yang, C. V.
  • Harvard Dataverse https://doi.org/10.7910/dvn/6wssgv
dataset January 2023