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Extraction of the f...
Extraction of the frequency moments of spectral densities from imaginary-time correlation function data
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- Dornheim, Tobias (författare)
- Ctr Adv Syst Understanding CASUS, D-02826 Gorlitz, Germany.;Helmholtz Zentrum Dresden Rossendorf HZDR, D-01328 Dresden, Germany.
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- Wicaksono, Damar C. (författare)
- Ctr Adv Syst Understanding CASUS, D-02826 Gorlitz, Germany.;Helmholtz Zentrum Dresden Rossendorf HZDR, D-01328 Dresden, Germany.
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- Suarez-Cardona, Juan E. (författare)
- Ctr Adv Syst Understanding CASUS, D-02826 Gorlitz, Germany.;Helmholtz Zentrum Dresden Rossendorf HZDR, D-01328 Dresden, Germany.;Tech Univ Dresden, D-01062 Dresden, Germany.
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- Tolias, Panagiotis, 1984- (författare)
- KTH,Rymd- och plasmafysik
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- Boehme, Maximilian P. (författare)
- Ctr Adv Syst Understanding CASUS, D-02826 Gorlitz, Germany.;Helmholtz Zentrum Dresden Rossendorf HZDR, D-01328 Dresden, Germany.;Tech Univ Dresden, D-01062 Dresden, Germany.
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- Moldabekov, Zhandos A. (författare)
- Ctr Adv Syst Understanding CASUS, D-02826 Gorlitz, Germany.;Helmholtz Zentrum Dresden Rossendorf HZDR, D-01328 Dresden, Germany.
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- Hecht, Michael (författare)
- Ctr Adv Syst Understanding CASUS, D-02826 Gorlitz, Germany.;Helmholtz Zentrum Dresden Rossendorf HZDR, D-01328 Dresden, Germany.
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- Vorberger, Jan (författare)
- Helmholtz Zentrum Dresden Rossendorf HZDR, D-01328 Dresden, Germany.
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Ctr Adv Syst Understanding CASUS, D-02826 Gorlitz, Germany;Helmholtz Zentrum Dresden Rossendorf HZDR, D-01328 Dresden, Germany. Ctr Adv Syst Understanding CASUS, D-02826 Gorlitz, Germany.;Helmholtz Zentrum Dresden Rossendorf HZDR, D-01328 Dresden, Germany.;Tech Univ Dresden, D-01062 Dresden, Germany. (creator_code:org_t)
- American Physical Society (APS), 2023
- 2023
- Engelska.
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Ingår i: Physical Review B. - : American Physical Society (APS). - 2469-9950 .- 2469-9969. ; 107:15
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We introduce an exact framework to compute the positive frequency moments M(alpha)(q) = (omega alpha) of different dynamic properties from imaginary-time quantum Monte Carlo data. As a practical example, we obtain the first five moments of the dynamic structure factor S(q, omega) of the uniform electron gas at the electronic Fermi temperature based on ab initio path integral Monte Carlo simulations. We find excellent agreement with known sum rules for alpha = 1, 3, and present results for alpha = 2, 4, 5. Our idea can be straightforwardly generalized to other dynamic properties such as the single-particle spectral function A(q, omega), and will be useful for a number of applications, including the study of ultracold atoms, exotic warm dense matter, and condensed matter systems.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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