Exact theory of the finite-temperature spectral function of Fermi polarons with multiple particle-hole excitations: diagrammatic theory versus Chevy ansatz
Abstract By using both diagrammatic theory and Chevy ansatz approach, we derive an exact set of equations, which determines the spectral function of Fermi polarons with multiple particle-hole excitations at nonzero temperature. In the diagrammatic theory, we find out the complete series of Feynman d...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Springer
2025-07-01
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| Series: | AAPPS Bulletin |
| Online Access: | https://doi.org/10.1007/s43673-025-00162-w |
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