3 papers
math-ph2019
A general method for rotational averages
Reed Nessler, Tuguldur Begzjav
The theory of nonlinear spectroscopy on randomly oriented molecules leads to the problem of averaging molecular quantities over the random rotation. We solve this problem for arbit…
math-ph2019
On three-dimensional rotational averages of odd-rank tensors
Tuguldur Kh. Begzjav, Reed Nessler, Marlan O. Scully +1
The recent growing interest in nonlinear optical spectroscopy in optically active medium demands the three-dimensional rotational average of high-rank tensors. In the present paper…
quant-ph2018
Magnus expansion method for two-level atom interacting with few-cycle pulse
Tuguldur Begzjav, Jonathan S. Ben-Benjamin, Hichem Eleuch +3
Using the Magnus expansion to the fourth order, we obtain analytic expressions for the atomic state of a two-level system driven by a laser pulse of arbitrary shape with small puls…