25th European Conference on Few-Body Problems in Physics

Session

Tuesday Parallel Session: AMO Systems (Linke Aula)

1 Aug 2023, 16:30

AudiMax (Alte Mensa)

Conveners

Tuesday Parallel Session: AMO Systems (Linke Aula)

• Mario Gattobigio (Université Côte d'Azur - Institut de Physique de Nice)

145. Discrete scale symmetry and non-integer dimensions in few-body systems at the unitarity limit

Prof. Tobias Frederico (Instituto Tecnologico de Aeronautica, Sao Jose dos Campos Brazil)

01/08/2023, 16:30

Invited Talk

Discrete scale symmetry exhibited by few-particle systems for resonant s-wave interactions is affected by squeezing or by reducing the embedding dimension. The Efimov geometrical separation ratio between the AAB bosonic bound states energies increases as the system is squeezed until the geometrical spectrum disappears for a critical non-integer dimension. This is found either by solving the ...

7. Two- and Three-Particle Complexes with Logarithmic Interaction: Compact Wave Functions for Two-Dimensional Excitons and Trions

Juan Del Valle (University of Gdansk)

01/08/2023, 16:55

Contributed Talk

In the framework of the effective mass approximation and assuming a logarithmic interaction between constituent charged particles, compact and locally accurate wave functions that describe bound states of the two-particle neutral and three-particle charged complexes in two dimensions are designed. Prime examples of these complexes are excitons and trions that appear in monolayers of...

128. Quantum-chaotic behavior of a particle interacting with independent scatterers

Vladimir Yurovsky (Tel Aviv University)

01/08/2023, 17:10

Contributed Talk

A gas of interacting particles is a paradigmatic example of chaotic systems. It is shown [1] that, even if all but one particle are fixed in generic positions, the excited states of the moving particle are chaotic. They are characterized by the number of principal components (NPC)—the number of integrable system eigenstates involved into the nonintegrable one, which increases linearly with the...

152. Linewidths of electron-impurity resonant states in semiconductor quantum wells

Pavel Belov (Universitaet Rostock)

01/08/2023, 17:25

Contributed Talk

Resonances in open quantum systems have been actively studied since the very birth of quantum mechanics [1,2]. Their linewidth broadenings caused by the finite lifetimes can be analytically estimated only in a few particular cases [3]. In this sense, the analytically estimated linewidth broadenings of the electron-impurity resonant states by Monozon and Schmelcher [4] is a remarkable...

63. Three-body recombination between helium and silver atoms at cold collision energies

Prof. Hiroya Suno (Research Center for Computing and Multimedia Studies, Hosei University)

01/08/2023, 17:40

Contributed Talk

Three-body recombination between helium and silver atoms is studied using hyperspherical coordinates. The three-body Schrodinger equation, represented in the slow variable discretized approach at short distances and in the adiabatic method at large distances [1] and using the potential-energy surface represented as the addition of realistic He-He and He-Ag pair interaction potentials [2][3],...