Bonn 2025 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 36: Ultra-cold Atoms, Ions and BEC III (joint session A/Q)

Q 36.7: Talk

Wednesday, March 12, 2025, 12:45–13:00, KlHS Mathe

Chiral Magnetic Effect in Optical Lattices — •Sabhyata Gupta and Luis Santos — Institut für Theoretische Physik - Leibniz Universität Hannover

The Chiral Magnetic Effect (CME) is a quantum phenomenon in which an electric current is generated along the direction of an applied magnetic field in the presence of a chiral imbalance between right- and left-handed fermions. This effect arises due to the chiral anomaly, where the conservation of chiral charge is violated in quantum field theories involving gauge fields. CME plays a pivotal role in revealing topological fluctuations in QCD matter during heavy-ion collisions and has applications in studying the baryon asymmetry in the early universe. However, its experimental exploration in a controlled setting remains challenging due to the complexity of the underlying quantum dynamics. Here, we propose an experimental realization of the CME using ultracold atoms trapped in optical lattices. By implementing a Rice-Mele-like model through spin-orbital coupling and laser-assisted tunneling, our scheme creates a tunable platform to simulate quench dynamics and emulate chiral asymmetry in the presence of magnetic field interactions. This approach bridges the gap between high-energy physics and quantum simulation, enabling precise control over parameters such as fermion masses and magnetic fields, and providing insights into non-equilibrium effects like chirality flipping and mass-induced axial current relaxation

Keywords: Quantum Simulation; Ultracold atoms; Chiral Magnetic Effect; Artificial Magnetic Field