Matches in SemOpenAlex for { <https://semopenalex.org/work/W3003774865> ?p ?o ?g. }
- W3003774865 abstract "We study the time evolution of excitonic states after photo-excitation in the one-dimensional spin-less extended Falicov-Kimball model. Several numerical methods are employed and benchmarked against each other: time-dependent mean-field simulations, the second-Born approximation (2BA) within the Kadanoff-Baym formalism, the generalized Kadanoff-Baym Ansatz (GKBA) implemented with the 2BA and the infinite time-evolving block decimation (iTEBD) method. It is found that the GKBA gives the best agreement with iTEBD and captures the relevant physics. We find that excitations to the particle-hole continuum and resonant excitations of the equilibrium exciton result in a qualitatively different dynamics. In the former case, the exciton binding energy remains positive and the frequency of the corresponding coherent oscillations is smaller than the band gap. On the other hand, resonant excitations trigger a collective mode whose frequency is larger than the band gap. We discuss the origin of these different behaviors by evaluating the nonequilibrium susceptibility using the nonthermal distribution and a random phase approximation. The peculiar mode with frequency larger than the band gap is associated with a partial population inversion with a sharp energy cutoff. We also discuss the effects of the cooling by a phonon bath. We demonstrate the real-time development of coherence in the polarization, which indicates excitonic condensation out of equilibrium." @default.
- W3003774865 created "2020-02-07" @default.
- W3003774865 creator A5042571725 @default.
- W3003774865 creator A5057848583 @default.
- W3003774865 creator A5059750892 @default.
- W3003774865 creator A5086215751 @default.
- W3003774865 date "2020-01-28" @default.
- W3003774865 modified "2023-09-25" @default.
- W3003774865 title "Ultrafast nonequilibrium evolution of excitonic modes in semiconductors" @default.
- W3003774865 cites W1561277622 @default.
- W3003774865 cites W1641363979 @default.
- W3003774865 cites W1743252877 @default.
- W3003774865 cites W1970932217 @default.
- W3003774865 cites W1978496048 @default.
- W3003774865 cites W1979571930 @default.
- W3003774865 cites W2001368731 @default.
- W3003774865 cites W2003452714 @default.
- W3003774865 cites W2005703485 @default.
- W3003774865 cites W2019570013 @default.
- W3003774865 cites W2021994802 @default.
- W3003774865 cites W2023270438 @default.
- W3003774865 cites W2032462811 @default.
- W3003774865 cites W2044660317 @default.
- W3003774865 cites W2046071375 @default.
- W3003774865 cites W2059264371 @default.
- W3003774865 cites W2062721989 @default.
- W3003774865 cites W2065504340 @default.
- W3003774865 cites W2072970857 @default.
- W3003774865 cites W2078722240 @default.
- W3003774865 cites W2085592483 @default.
- W3003774865 cites W2097804096 @default.
- W3003774865 cites W2098269095 @default.
- W3003774865 cites W2103194447 @default.
- W3003774865 cites W2107432007 @default.
- W3003774865 cites W2116271702 @default.
- W3003774865 cites W2125086348 @default.
- W3003774865 cites W2126100726 @default.
- W3003774865 cites W2134233006 @default.
- W3003774865 cites W2155407946 @default.
- W3003774865 cites W2209661254 @default.
- W3003774865 cites W2210465977 @default.
- W3003774865 cites W2219607240 @default.
- W3003774865 cites W2315555552 @default.
- W3003774865 cites W2331561937 @default.
- W3003774865 cites W2341025560 @default.
- W3003774865 cites W2344986973 @default.
- W3003774865 cites W2345845963 @default.
- W3003774865 cites W2498106012 @default.
- W3003774865 cites W2500804159 @default.
- W3003774865 cites W2511201357 @default.
- W3003774865 cites W2513086999 @default.
- W3003774865 cites W2531647489 @default.
- W3003774865 cites W2588640379 @default.
- W3003774865 cites W2590294109 @default.
- W3003774865 cites W2607206063 @default.
- W3003774865 cites W2737627024 @default.
- W3003774865 cites W2775910381 @default.
- W3003774865 cites W2788870182 @default.
- W3003774865 cites W2795193380 @default.
- W3003774865 cites W2808982318 @default.
- W3003774865 cites W2884040354 @default.
- W3003774865 cites W2892002162 @default.
- W3003774865 cites W2899017989 @default.
- W3003774865 cites W2903063623 @default.
- W3003774865 cites W2914872443 @default.
- W3003774865 cites W2952769427 @default.
- W3003774865 cites W2986539709 @default.
- W3003774865 cites W3028911059 @default.
- W3003774865 cites W3102118934 @default.
- W3003774865 cites W3105571973 @default.
- W3003774865 cites W3105979266 @default.
- W3003774865 cites W3164441899 @default.
- W3003774865 cites W4247406444 @default.
- W3003774865 cites W4251024638 @default.
- W3003774865 cites W4256680031 @default.
- W3003774865 doi "https://doi.org/10.1103/physrevb.101.035203" @default.
- W3003774865 hasPublicationYear "2020" @default.
- W3003774865 type Work @default.
- W3003774865 sameAs 3003774865 @default.
- W3003774865 citedByCount "26" @default.
- W3003774865 countsByYear W30037748652020 @default.
- W3003774865 countsByYear W30037748652021 @default.
- W3003774865 countsByYear W30037748652022 @default.
- W3003774865 countsByYear W30037748652023 @default.
- W3003774865 crossrefType "journal-article" @default.
- W3003774865 hasAuthorship W3003774865A5042571725 @default.
- W3003774865 hasAuthorship W3003774865A5057848583 @default.
- W3003774865 hasAuthorship W3003774865A5059750892 @default.
- W3003774865 hasAuthorship W3003774865A5086215751 @default.
- W3003774865 hasBestOaLocation W30037748652 @default.
- W3003774865 hasConcept C121332964 @default.
- W3003774865 hasConcept C130979935 @default.
- W3003774865 hasConcept C136479403 @default.
- W3003774865 hasConcept C17729963 @default.
- W3003774865 hasConcept C24169881 @default.
- W3003774865 hasConcept C26873012 @default.
- W3003774865 hasConcept C3079626 @default.
- W3003774865 hasConcept C54101563 @default.
- W3003774865 hasConcept C62520636 @default.
- W3003774865 hasConcept C74859849 @default.