Undergraduate Honors Thesis

 

Accounting for Confinement Shifts on the Binding Energies of 39K Feshbach Molecules 公开 Deposited

https://scholar.colorado.edu/concern/undergraduate_honors_theses/5m60qs924
Abstract
  • Ultracold 39K gases provide an ideal platform to study quantum few- and many-body systems, due to the high degree of control present in these systems. In particular, Feshbach resonances facilitate a magnetically tunable interaction strength between the atoms in the gas, and allow the formation of two- and three-body bound states, called Feshbach molecules and Efimov trimers respectively. Radio-frequency dissociation spectroscopy of weakly bound Feshbach molecules is one of the most precise ways to characterize the properties of a Feshbach resonance. We apply a numerical method to our Feshbach molecule binding energy data to compute the shift in the molecule’s binding energy due to the presence of a confining potential. These simulations are first used to replicate the confinement shift found for 6Li Feshbach molecules by another group, and then to correct our measurement results for the binding energy of 39K Feshbach molecules. The correction of these measurements is necessary for our determination of the Feshbach resonance location with unprecedented accuracy.

Creator
Date Awarded
  • 2019-01-01
Academic Affiliation
Advisor
Committee Member
Granting Institution
Subject
最新修改
  • 2020-01-28
Resource Type
权利声明
Language

关联

单件