[图书][B] Jost functions in quantum mechanics

SA Rakityansky - 2022 - Springer
It is long since quantum mechanics became the central part of modern science that deals
with all forms of inorganic matter. Basic principles of quantum mechanics are well …

Three-body resonances Λnn and ΛΛn

VB Belyaev, SA Rakityansky, W Sandhas - Nuclear Physics A, 2008 - Elsevier
Possible bound and resonant states of the hypernuclear systems Λnn and ΛΛn are sought
as zeros of the corresponding three-body Jost functions calculated within the framework of …

Semiclassical approach to Regge poles trajectories calculations for nonsingular potentials: Thomas–Fermi type

SM Belov, NB Avdonina, Z Felfli… - Journal of Physics A …, 2004 - iopscience.iop.org
A simple semiclassical approach, based on the investigation of anti-Stokes line topology, is
presented for calculating Regge poles for nonsingular (Thomas–Fermi type) potentials …

Analytic structure and power series expansion of the Jost function for the two-dimensional problem

SA Rakityansky, N Elander - Journal of Physics A: Mathematical …, 2012 - iopscience.iop.org
For a two-dimensional quantum-mechanical problem, we obtain a generalized power series
expansion of the S-matrix that can be done near an arbitrary point on the Riemann surface …

Bound-state calculations for three atoms without explicit partial wave decomposition

VA Roudnev, SL Yakovlev, SA Sofianos - Few-Body Systems, 2005 - Springer
A method to calculate the bound states of three atoms without resorting to an explicit partial
wave decomposition is presented. The differential form of the Faddeev equations in the total …

Sign problem of the fermionic shadow wave function

F Calcavecchia, F Pederiva, MH Kalos, TD Kühne - Physical Review E, 2014 - APS
We present a whole series of methods to alleviate the sign problem of the fermionic shadow
wave function in the context of variational Monte Carlo. The effectiveness of our techniques …

Resonance Regge poles and the state-to-state F+ H2 reaction: QP decomposition, parametrized S matrix, and semiclassical complex angular momentum analysis of …

JNL Connor - The Journal of Chemical Physics, 2013 - pubs.aip.org
Three new contributions to the complex angular momentum (CAM) theory of differential
cross sections (DCSs) for chemical reactions are reported. They exploit recent advances in …

Multi-channel analog of the effective-range expansion

SA Rakityansky, N Elander - Journal of Physics A: Mathematical …, 2011 - iopscience.iop.org
Similar to the standard effective-range expansion that is done near the threshold energy, we
obtain a generalized power-series expansion of the multi-channel Jost-matrix that can be …

Resonances and off-shell characteristics of effective interactions

SE Massen, SA Sofianos, SA Rakityansky, S Oryu - Nuclear Physics A, 1999 - Elsevier
The importance of including experimental resonances in constructing effective intercluster
interactions has been investigated. For this, we first address the question of how to obtain …

Generation of converging Regge-pole bounds: a new formulation of complex rotation quantization

CR Handy, AZ Msezane - Journal of Physics A: Mathematical and …, 2001 - iopscience.iop.org
We propose an unprecedented bounding theory which generates converging bounds to the
Regge poles of rational fraction scattering potentials. This is made possible by the recent …