Effective Heisenberg equations for quadratic Hamiltonians.

Source :: International Journal of Modern Physics A: Particles & Fields; Gravitation; Cosmology; Nuclear Physics. 7/30/2022, Vol. 37 Issue 20/21, p1-13. 13p.
Publication Year :: 2022
Abstract: In this paper, we discuss effective quantum dynamics obtained by averaging projector with respect to free dynamics. For unitary dynamics generated by quadratic fermionic Hamiltonians, we obtain effective Heisenberg dynamics. By perturbative expansions, we obtain the correspondent effective time-local Heisenberg equations. We also discuss a similar problem for bosonic case. [ABSTRACT FROM AUTHOR]

Language :: English
ISSN :: 0217751X
Volume :: 37
Issue :: 20/21
Database :: Academic Search Index
Journal :: International Journal of Modern Physics A: Particles & Fields; Gravitation; Cosmology; Nuclear Physics
Publication Type :: Academic Journal
Accession number :: 159582788
Full Text :: https://doi.org/10.1142/S0217751X22430205