. "Ab initio calculation of harmonic generation spectra of helium using a time-dependent non-Hermitian formalism" . "1050-2947" . . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . . "Kapr\u00E1lov\u00E1, Petra" . . . "3"^^ . . . . . . . "The high harmonic spectra of helium atoms which are exposed to external monochromatic linearly polarized laser fields are calculated by solving the time-dependent non-Hermitian Schr\u00F6dinger equation. The entire electronic correlation effects with and without the presence of the field are included in our calculations. The full high-harmonic generation spectra (HGS) were calculated (and not only the intensities of the integer harmonics frequencies as calculated before by non-Hermitian quantum mechanics). The HGS were calculated when the helium atoms are initially in their ground state, or in the 1s2p excited state or in a superposition of the two field free states. In the first two cases only odd-order harmonics are obtained. However, in the latter, in addition to the odd-order harmonics also pronounced even-order harmonics are obtained."@en . "The high harmonic spectra of helium atoms which are exposed to external monochromatic linearly polarized laser fields are calculated by solving the time-dependent non-Hermitian Schr\u00F6dinger equation. The entire electronic correlation effects with and without the presence of the field are included in our calculations. The full high-harmonic generation spectra (HGS) were calculated (and not only the intensities of the integer harmonics frequencies as calculated before by non-Hermitian quantum mechanics). The HGS were calculated when the helium atoms are initially in their ground state, or in the 1s2p excited state or in a superposition of the two field free states. In the first two cases only odd-order harmonics are obtained. However, in the latter, in addition to the odd-order harmonics also pronounced even-order harmonics are obtained." . "high-order harmonic generation; symmetry selection rules; even harmonics; complex scaling; F-produkt"@en . . . . . "Ab initio v\u00FDpo\u010Det spekter generace vy\u0161\u0161\u00EDch harmonick\u00FDch helia pomoc\u00ED \u010Dasov\u011B z\u00E1visl\u00E9ho nehermitovsk\u00E9ho formalismu"@cs . "Physical Review. A" . "Byla po\u010D\u00EDt\u00E1na spetra vy\u0161\u0161\u00EDch harmonick\u00FDch u heliov\u00FDch atom\u016F, kter\u00E9 jsou exponov\u00E1ny v extern\u00EDch monochromatick\u00FDch line\u00E1rn\u011B polarizovan\u00FDch pol\u00EDch, \u0159e\u0161en\u00EDm \u010Dasov\u011B z\u00E1visl\u00E9 nehermitovsk\u00E9 Schr\u00F6dingerovy rovnice. V na\u0161ich v\u00FDpo\u010Dtech byly pln\u011B zahrnuty efekty elektronick\u00E9 korelace v p\u0159\u00EDtomnosti pole i bez n\u00ED. Byla po\u010D\u00EDt\u00E1na \u00FApln\u00E1 spektra generace vy\u0161\u0161\u00EDch harmonick\u00FDch (HGS) , nikoliv jen integr\u00E1ln\u00ED intensity cel\u00FDch harmonick\u00FDch frekvenc\u00ED, jak se po\u010D\u00EDtalo d\u0159\u00EDve pomoc\u00ED nehermitovsk\u00E9 kvantov\u00E9 mechaniky. HGS byla po\u010D\u00EDt\u00E1na pro helium na po\u010D\u00E1tku v z\u00E1kladn\u00EDm stavu, v excitovan\u00E9m stavu 1s2p a v superpozici t\u011Bchto dvou stav\u016F. V prvn\u00EDch dvou p\u0159\u00EDpadech dost\u00E1v\u00E1me pouze lich\u00E9 harmonick\u00E9. V posledn\u00EDm p\u0159\u00EDpad\u011B jsou v\u0161ak v\u00FDrazn\u00E9 tak\u00E9 sud\u00E9 harmonick\u00E9."@cs . "1"^^ . "RIV/61388963:_____/06:00047434" . . "8"^^ . "Ab initio calculation of harmonic generation spectra of helium using a time-dependent non-Hermitian formalism"@en . "RIV/61388963:_____/06:00047434!RIV07-AV0-61388963" . "[DC351FB63A09]" . "P(KJB100550501), P(LC512), Z(AV0Z40550506)" . . "Ab initio v\u00FDpo\u010Det spekter generace vy\u0161\u0161\u00EDch harmonick\u00FDch helia pomoc\u00ED \u010Dasov\u011B z\u00E1visl\u00E9ho nehermitovsk\u00E9ho formalismu"@cs . . "Gilary, I." . "463920" . "Moiseyev, N." . "Ab initio calculation of harmonic generation spectra of helium using a time-dependent non-Hermitian formalism"@en . "74" . . . "-" . "Ab initio calculation of harmonic generation spectra of helium using a time-dependent non-Hermitian formalism" . "052505;1" .