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Quantum embedding d...
Quantum embedding description of the Anderson lattice model with the ghost Gutzwiller approximation
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- Frank, Marius S. (författare)
- Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
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- Lee, Tsung-Han (författare)
- Rutgers State Univ, Phys & Astron Dept, Piscataway, NJ 08854 USA.
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- Bhattacharyya, Gargee (författare)
- Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
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- Tsang, Pak Ki Henry (författare)
- Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA.;Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32306 USA.
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- Quito, Victor L. (författare)
- Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA.;Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32306 USA.;Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
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- Dobrosavljevic, Vladimir (författare)
- Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA.;Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32306 USA.
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- Christiansen, Ove (författare)
- Aarhus Univ, Dept Chem, DK-8000 Aarhus C, Denmark.
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- Lanatà, Nicola (författare)
- Stockholms universitet,Nordiska institutet för teoretisk fysik (Nordita),Aarhus University, Denmark,Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.;Nordita SU
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Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark Rutgers State Univ, Phys & Astron Dept, Piscataway, NJ 08854 USA. (creator_code:org_t)
- American Physical Society (APS), 2021
- 2021
- Engelska.
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Ingår i: Physical Review B. - : American Physical Society (APS). - 2469-9950 .- 2469-9969. ; 104:8
- 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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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- We present benchmark calculations of the Anderson lattice model based on the recently developed "ghost Gutzwiller approximation". Our analysis shows that, in some parameters regimes, the predictions of the standard Gutzwiller approximation can be incorrect by orders of magnitude for this model. We show that this is caused by the inability of this method to describe simultaneously the Mott physics and the hybridization between correlated and itinerant degrees of freedom-whose interplay often governs the metal-insulator transition in real materials. Finally, we show that the ghost Gutzwiller approximation solves this problem, providing us with results in remarkable agreement with dynamical mean-field theory throughout the entire phase diagram, while being much less computationally demanding. We provide an analytical explanation of these findings and discuss their implications within the context of ab-initio computation of strongly correlated matter.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
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