The effect of particle-hole excitations of the Fermi sea on the zero-phonon line (ZPL) of the optical spectrum of a chromophore in a He-3 droplet is considered. Due to the finite value of the density of states, the contribution of the low energy particle-hole excitations in the optical spectrum diverges at T -> 0. A non-perturbative theory is proposed that takes explicitly these excitations into account. It is shown that the ZPL takes a finite homogeneous width and a strong asymmetry, in agreement with the experimental observation
Benedek, G., Hizhnyakov, V. (2012). Fermi sea excitations in the optical spectrum of a doped 3He droplet. CHEMICAL PHYSICS LETTERS, 548, 17-22 [10.1016/j.cplett.2012.07.065].
Fermi sea excitations in the optical spectrum of a doped 3He droplet
BENEDEK, GIORGIO;
2012
Abstract
The effect of particle-hole excitations of the Fermi sea on the zero-phonon line (ZPL) of the optical spectrum of a chromophore in a He-3 droplet is considered. Due to the finite value of the density of states, the contribution of the low energy particle-hole excitations in the optical spectrum diverges at T -> 0. A non-perturbative theory is proposed that takes explicitly these excitations into account. It is shown that the ZPL takes a finite homogeneous width and a strong asymmetry, in agreement with the experimental observationFile | Dimensione | Formato | |
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CPL GB Hizhnyakov 2012.pdf
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