32 citations · 160 across the 14 of their papers we have counts for
15 papers
Chiral Temporal Structures in Molecular Rotational Dynamics
A. G. Löhr, O. Smirnova, M. Mirahmadi
We introduce chiral rotational wavepackets: coherent superpositions of a few low-lying rotational states of a molecule for which the expectation value of a molecular axis traces a…
Direct three body dynamics govern ion atom recombination and barrierless termolecular reactions
Rian Koots, Marjan Mirahmadi, Jesús Pérez-Ríos
For over a century, termolecular, or third order, chemical reactions have been explained by the Lindemann Hinshelwood mechanism, assuming sequential stabilization via bimolecular e…
Three-body recombination in physical chemistry
Marjan Mirahmadi, Jesús Pérez-Ríos
Three-body recombination, or ternary association, is a termolecular reaction in which three particles collide, forming a bound state between two, whereas the third escapes freely.…
Ion-atom-atom three-body recombination: from the cold to the thermal regime
Marjan Mirahmadi, Jesús Pérez-Ríos
We present a study on ion-atom-atom reaction A+A+B in a wide range of systems and collision energies ranging from 100K to 10K, analyzing the two possible products: mol…
Mapping atomic trapping in an optical superlattice onto the libration of a planar rotor in electric fields
Marjan Mirahmadi, Bretislav Friedrich, Burkhard Schmidt +1
We show that two seemingly unrelated problems - the trapping of an atom in an optical superlattice (OSL) and the libration of a planar rigid rotor in combined electric and optical…
Hyperradial distribution function of few-body problems: a new arena for extreme value theory
Yu Wang, Marjan Mirahmadi, Ahmed A. Elkamshishy +1
This work explores classical capture models for few-body systems via a Monte Carlo method in hyperspherical coordinates. In particular, we focus on van der Waals and charged-induce…
Ion-atom-atom three-body recombination in cold hydrogen and deuterium plasmas
Miruna T. Cretu, Marjan Mirahmadi, Jesús Pérez-Ríos
We present a detailed study about ion-atom-atom three-body recombination in hydrogen and deuterium plasmas based on classical trajectory calculations in hyperspherical coordinates.…
Ozone formation in ternary collisions: Theory and experiment reconciled
Marjan Mirahmadi, Jesús Pérez-Ríos, Oleg Egorov +2
Absorbing UV radiation, ozone protects life on Earth and plays a fundamental role in Earth's temperature balance. The formation of ozone occurs through the ternary recombination re…
Classical threshold law for the formation of van der Waals molecules
Marjan Mirahmadi, Jesús Pérez-Ríos
We study the role of pairwise long-range interactions in the formation of van der Waals molecules through direct three-body recombination processes A + B + B AB + B,…
Quantum dynamics of a planar rotor driven by suddenly switched combined aligning and orienting interactions
Marjan Mirahmadi, Burkhard Schmidt, Bretislav Friedrich
We investigate, both analytically and numerically, the quantum dynamics of a planar (2D) rigid rotor subject to suddenly switched-on or switched-off concurrent orienting and aligni…
On the formation of van der Waals complexes through three-body recombination
Marjan Mirahmadi, Jesús Pérez-Ríos
In this work, we show that van der Waals molecules X-RG (where RG is the rare gas atom) may be created through direct three-body recombination collisions, i.e., X + RG + RG $\right…
Dynamics of polar polarizable rotors acted upon by unipolar electromagnetic pulses: From the sudden to the adiabatic regime
Marjan Mirahmadi, Burkhard Schmidt, Mallikarjun Karra +1
We study, analytically as well as numerically, the dynamics that arises from the interaction of a polar polarizable rigid rotor with single unipolar electromagnetic pulses of varyi…
Conditional quasi-exact solvability of the quantum planar pendulum and of its anti-isospectral hyperbolic counterpart
Simon Becker, Marjan Mirahmadi, Burkhard Schmidt +2
We have subjected the planar pendulum eigenproblem to a symmetry analysis with the goal of explaining the relationship between its conditional quasi-exact solvability (C-QES) and t…
The similarity of attractive and repulsive forces on a lattice
Marjan-S. Mirahmadi, Amir H. Fatollahi, Mohammad Khorrami
On a lattice, as the momentum space is compact, the kinetic energy is bounded not only from below but also from above. It is shown that this, somehow removes the distinction betwee…
Eigenvalue problem for radial potentials in space with SU(2) fuzziness
Marjan-S. Mirahmadi, Amir H. Fatollahi
The eigenvalue problem for radial potentials is considered in a space whose spatial coordinates satisfy the SU(2) Lie algebra. As the consequence, the space has a lattice nature an…