Kutztown University Graduate Co-Authors Publication for American Physical Society

KUTZTOWN, Pa. - Kutztown University graduate Jacob Christ has co-authored a scholarly article in Physical Review A with Dr. Kunal Das, KU professor of Physical Sciences. Published by the highly-esteemed American Physical Society, Physical Review A is a peer-reviewed scientific journal that covers atomic, molecular, and optical physics and quantum information.

Titled "Realizing the Harper model with ultracold atoms in a ring lattice," Christ and Das's publication demonstrates that all of the salient features of the Harper-Hofstadter model can be implemented with ultracold atoms trapped in a bichromatic ring-shaped lattice. They do so by using realistic sinusoidal lattice potentials, determining the optimal conditions necessary to realize the critical point where the spectrum becomes fractal, and identifying the nature and cause of the departures from the discrete model predictions.  

As part of his research, Christ spent three years studying aspects of the Quantum Hall effect and was able to create optimal conditions to create the best reproduction of the Hofstadter butterfly, a famous fractal pattern which has never been created in experiments until now. He then presented this research at the Division of Atomic Molecular and Optical Physics annual meeting, an international conference focused on atomic physics.  

During his time at Kutztown University, Christ was a physics major. In 2017, he was the only student to present his research at the KU Faculty Recognition Ceremony for grants and sponsored projects. During his senior year, he was awarded the Copper Chambliss Student Academic Achievement Award in the category of successfully completed research projects. Christ graduated from KU in May 2018 and is currently a graduate student studying physics at Lehigh University.

The American Physical Society (APS) is a nonprofit membership organization working to advance and diffuse the knowledge of physics through its research journals, scientific meetings, education and outreach. APS represents over 55,000 members in the United States and throughout the world.  

For more information and to read the article, please visit https://journals.aps.org/pra/abstract/10.1103/PhysRevA.99.013604