Szerző szerinti böngészés "Umarov, Otabek"

Megjelenítve 1 - 3 (Összesen 3)
  • Bélyegkép
    TételSzabadon hozzáférhető
    Light-induced non-adiabatic properties in molecular systems
    (2024-09-13) Umarov, Otabek; Vibók, Ágnes; Fizikai tudományok doktori iskola; Természettudományi és Technológiai Kar
    My dissertation discusses light-induced non-adiabatic molecular properties of the NaH and H2CO molecules using extensive numerical theoretical calculations. I investigate the light-induced dissociation of NaH, together with the fragment kinetic energy release spectra and angular distributions in the presence of light-induced conical intersections and light-induced avoided crossing formed by an electric field. In addition, the assignment of this research is to study the effect of this system’s PDM on dissociation processes. My second work investigates the topological aspects of cavity-induced degeneracies in H2CO. In this case, the Berry phase (or geometric phase) and the non-adiabatic coupling terms between two polaritonic states of this system in the vicinity of the light-induced conical intersection are studied.
  • Nincs kép
    TételSzabadon hozzáférhető
    Topological aspects of cavity-induced degeneracies in polyatomic molecules
    (2022) Badankó, Péter; Umarov, Otabek; Fábri, Csaba; Halász, Gábor J.; Vibók, Ágnes
  • Nincs kép
    TételSzabadon hozzáférhető
    Topological aspects of cavity-induced degeneracies in polyatomic molecules
    Badanko, Peter; Umarov, Otabek; Fabri, Csaba; Halasz, Gabor J.; Vibok, Agnes; Otabek Umarov (1992-) (PhD student in atomic and molecular physics); Fizikai Intézet -- 749; Elméleti Fizikai Tanszék -- 713; TTK; Debreceni Egyetem
    Conical intersections are degeneracies between multidimensional potential energy surfaces of molecular systems. It is well known that, besides these phenomena significantly modify the spectroscopic and dynamical properties of molecules, their presence in a molecular system has noticeable topological implications, as well. Such a consequence is the appearance of the topological or geometric phase. Conical intersections not only occur in nature but they can also be created by light. This can either be classical laser light or quantum light in an optical cavity. As a showcase example, by placing the formaldehyde (H2CO) molecule into a cavity, the topological properties (e.g., geometric or Berry phase) of the emerging light-induced conical intersection have been investigated for different cavity parameters and geometrical arrangements.