Implementation and validation of the relativistic transient absorption theory within the dipole approximation

For corrigendum, see: Felipe Zapata et al 2022 Electron. Struct. 4 029501 DOI: 10.1088/2516-1075/ac646f
A relativistic transient absorption theory is derived, implemented and validated within the dipole approximation based on the time-dependent Dirac equation. In the non-relativistic limit, it is found that the absorption agrees with the well established non-relativistic theory based on the time-dependent Schrodringer equation. Time-dependent simulations have been performed using the Dirac equation and the Schrodinger equation for the hydrogen atom in two different attosecond transient absorption scenarios. These simulations validate the present relativistic theory. The presented work can be seen as a first step in the development of a more general relativistic attosecond transient absorption spectroscopy method for studying heavy atoms, but it also suggests the possibility of studying relativistic effects, such as Zitterbewegung, in the time domain.

NATURVETENSKAP Fysik hsv//swe
NATURAL SCIENCES Physical Sciences hsv//eng
NATURVETENSKAP Fysik Atom- och molekylfysik och optik hsv//swe
NATURAL SCIENCES Physical Sciences Atom and Molecular Physics and Optics hsv//eng
Attosecond transient absorption
time dependent Dirac equation
relativistic velocity
gauge transformation
Zitterbewegung
power in quantum mechanics
Attosecond transient absorption
Gauge transformation
Power in quantum mechanics
Relativistic velocity
Time dependent Dirac equation
Zitterbewegung

Vinbladh, JimmyStockholm University,Lunds universitet,Stockholms universitet,Fysikum,Lund University, Sweden,Matematisk fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Mathematical Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)ji2085vi (author)
Lindroth, EvaStockholm University,Stockholms universitet,Fysikum(Swepub:su)lindr (author)
Dahlström, Jan MarcusLund University,Lunds universitet,Matematisk fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Mathematical Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)ma0303da (author)
Skåne University HospitalFysikum (creator_code:org_t)

By the author/editor: Zapata, Felipe; Vinbladh, Jimmy; Lindroth, Eva; Dahlström, Jan M ...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Atom and Molecul ...

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