scholarly journals Tunneling and Vibration of Correlated Particles: Quantum Dynamics of a One-Dimensional Three-Body System

2002 ◽  
Vol 108 (1) ◽  
pp. 41-57
Author(s):  
Y. Okajima ◽  
T. Ogawa
Keyword(s):  
Quantum Dynamics ◽  
Body System ◽  
One Dimensional ◽  
Three Body

scholarly journals Universality in a one-dimensional three-body system

2019 ◽  
Vol 100 (1) ◽  
Author(s):  
Lucas Happ ◽  
Matthias Zimmermann ◽  
Santiago I. Betelu ◽  
Wolfgang P. Schleich ◽  
Maxim A. Efremov
Keyword(s):  
Body System ◽  
One Dimensional ◽  
Three Body

scholarly journals The Dynamics of Digits: Calculating Pi with Galperin’s Billiards

Mathematics ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 509
Author(s):  
Xabier M. Aretxabaleta ◽  
Marina Gonchenko ◽  
Nathan L. Harshman ◽  
Steven Glenn Jackson ◽  
Maxim Olshanii ◽  
...  
Keyword(s):  
Irrational Number ◽  
Type Model ◽  
Hard Wall ◽  
Body System ◽  
Mass Ratio ◽  
Specific Mass ◽  
One Dimensional ◽  
Number Π ◽  
The Masses ◽  
Three Body

In Galperin billiards, two balls colliding with a hard wall form an analog calculator for the digits of the number π . This classical, one-dimensional three-body system (counting the hard wall) calculates the digits of π in a base determined by the ratio of the masses of the two particles. This base can be any integer, but it can also be an irrational number, or even the base can be π itself. This article reviews previous results for Galperin billiards and then pushes these results farther. We provide a complete explicit solution for the balls’ positions and velocities as a function of the collision number and time. We demonstrate that Galperin billiard can be mapped onto a two-particle Calogero-type model. We identify a second dynamical invariant for any mass ratio that provides integrability for the system, and for a sequence of specific mass ratios we identify a third dynamical invariant that establishes superintegrability. Integrability allows us to derive some new exact results for trajectories, and we apply these solutions to analyze the systematic errors that occur in calculating the digits of π with Galperin billiards, including curious cases with irrational number bases.

scholarly journals Quantum dynamics of impurities in a one-dimensional Bose gas

2012 ◽  
Vol 85 (2) ◽  
Author(s):  
J. Catani ◽  
G. Lamporesi ◽  
D. Naik ◽  
M. Gring ◽  
M. Inguscio ◽  
...  
Keyword(s):  
Quantum Dynamics ◽  
Bose Gas ◽  
One Dimensional

Multiple impacts and energy transfer in a three-body system for noncollinear collisions

1993 ◽  
Vol 87 (3) ◽  
pp. 195-213 ◽  
Author(s):  
Vladimir M. Azriel ◽  
Lev Yu. Rusin ◽  
Mikhail B. Sevryuk
Keyword(s):  
Energy Transfer ◽  
Body System ◽  
Multiple Impacts ◽  
Three Body
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