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Analog quantum chemistry simulation with ultra-cold atoms

Alejandro González-Tudela

Jul 15, 20190 citations

Simulating Particle Creation with Cold Atoms

Michael Schirber

PhysicsOct 1, 20260 citations

Fractal chiral anomaly in cold atomic Weyls

Michael Kolodrubetz, Sthitadhi Roy, Joel E. Moore +1 more

Bulletin of the American Physical SocietyMar 15, 20170 citations

Analog Simulation of Weyl Particles with Cold Atoms

Daniel Suchet, Mihail Rabinovic, Reimann, Thomas +7 more

We study theoretically, numerically, and experimentally the relaxation of a collisionless gas in a quadrupole trap after a momentum kick. The non-separability of the potential enables a quasi thermalization of the single particle distribution function even in the absence of interactions. Suprinsingly, the dynamics features an effective decoupling between the strong trapping axis and the weak trapping plane. The energy delivered during the kick is redistributed according to the symmetries of the system and satisfies the Virial theorem, allowing for the prediction of the final temperatures. We show that this behaviour is formally equivalent to the relaxation of massless relativistic Weyl fermions after a sudden displacement from the center of a harmonic trap.We study theoretically, numerically, and experimentally the relaxation of a collisionless gas in a quadrupole trap after a momentum kick. The non-separability of the potential enables a quasi thermalization of the single particle distribution function even in the absence of interactions. Suprinsingly, the dynamics features an effective decoupling between the strong trapping axis and the weak trapping plane. The energy delivered during the kick is redistributed according to the symmetries of the system and satisfies the Virial theorem, allowing for the prediction of the final temperatures. We show that this behaviour is formally equivalent to the relaxation of massless relativistic Weyl fermions after a sudden displacement from the center of a harmonic trap.

May 18, 20165 citations

Simulating Dirac, Weyl and Maxwell equations with cold atoms in optical lattices

Yan-Qing Zhu, Dan-Wei Zhang, Shi-Liang Zhu

Relativistic wave equations, such as Dirac, Weyl or Maxwell equations, are fundamental equations which we use to describe the dynamics of the microscopic particles. On the other hand, recent experimental and theoretical studies have shown that almost all parameters in cold atomic systems are precisely tunable, so the cold atom systems are considered as an ideal platform to perform quantum simulations. It can be used to study some topics in high energy and condensed matter physics. In this article, we will first introduce the ideas and methods for engineering the Hamiltonian of atoms, mainly related to the theories of laser-assisted tunneling. Based on these methods, one can simulate the equations of motion of relativistic particles and observe some interesting behaviors which are hard to be observed in other systems. The article reviews these recent advances.Relativistic wave equations, such as Dirac, Weyl or Maxwell equations, are fundamental equations which we use to describe the dynamics of the microscopic particles. On the other hand, recent experimental and theoretical studies have shown that almost all parameters in cold atomic systems are precisely tunable, so the cold atom systems are considered as an ideal platform to perform quantum simulations. It can be used to study some topics in high energy and condensed matter physics. In this article, we will first introduce the ideas and methods for engineering the Hamiltonian of atoms, mainly related to the theories of laser-assisted tunneling. Based on these methods, one can simulate the equations of motion of relativistic particles and observe some interesting behaviors which are hard to be observed in other systems. The article reviews these recent advances.

Acta Physica SinicaJan 1, 20191 citation

Chapter 4 Quantum Simulation with Cold Atoms

B. Laburthe-Tolra, Thierry Lahaye, Hélène Perrin

EDP Sciences eBooksDec 31, 20221 citation

Analog simulation of Weyl particles with cold atoms

Abstract

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Analog simulation of Weyl particles with cold atoms

Abstract

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