24th European Conference on Few-Body Problems in Physics

Session

Parallel Session Monday: Atoms and Molecules

2 Sept 2019, 14:00

University of Surrey

131. Three-body systems in novel two-dimensional materials

Roman Kezerashvili (City University of New York)

02/09/2019, 14:00

Invited

Talk

Studies related to the formation and calculations of the properties of positively ($ehh$) and negatively ($eeh$) charged trions in two-dimensional (2D) materials, which includes transition metal dichalcogenides (TMDC) [1], silicene, germanene, and stanene (Xenes) [2], and phosphorene are presented. We provide the current status of the theoretical and experimental research and recent...

55. Accuracy of the Born-Oppenheimer approximation and universality in a one-dimensional three-body system

Lucas Happ (Universität Ulm)

02/09/2019, 14:30

Atoms and Molecules

Talk

We study a three-body system confined to one space dimension, consisting of two identical, non-interacting, heavy particles and a light particle with arbitrary mass ratio interacting with the two heavy particles. In this talk we focus on a contact heavy-light interaction, and therefore apply the exact integral equations of Skorniakov and Ter-Martirosian, in order to obtain the three-body...

60. Universal Short Range Correlations in Bosonic Helium Clusters

Betzalel Bazak

02/09/2019, 14:55

Atoms and Molecules

Talk

Short-range correlations in bosonic Helium clusters, composed of ${}^4$He atoms, are studied utilizing the generalized contact formalism. The emergence of universal $n$-body short-range correlations, associated with the repulsive $1/r^{12}$ part of the Lennard-Jones potential, is formulated and demonstrated numerically via Monte Carlo simulations. The values of the $n$-particle contacts are...

11. Link between the complex rotation resonances and scattering matrix resonances

Prof. Alexander K. Motovilov (BLTP, Joint Institute for Nuclear Research)

02/09/2019, 15:20

Few-Body Methods

Talk

We consider a multichannel Schroedinger operator with binary channels and a three-body Hamitonian with pairwise interactions. Being written in the momentum representation, both of these operators are subject to the complex deformation, a kind of inhomogeneous complex rotation/scaling. Isolated non-real eigenvalues of the complexly deformed Hamiltonians are called the complex rotation...