Scrambling and Entangling Spinning Particles

Abstract

The speaker’s team revisits the gravitational eikonal amplitudes of two scattering spinning particles and inspect their scrambling power in the spin spaces that is quantified through the tripartite information. The team found that in the non-relativistic limit and a special high-energy limit the leading contribution is a quantity that is universal and theory independent. The minimal coupling is singled out with minimal scrambling in a different high momenta limit. The team also inspected the initial state dependence of entanglement generation and found that the spin coherent state with vanishing spin may not necessarily be the hardest to entangle. Interestingly, among a family of mixed states, the only P-rep state there known to be the best approximation of classical mixed states was singled out as one with minimal entanglement generated.

About the Speaker

Dr. WANG Tienhang is currently a postdoc at the Institute of Theoretical Physics, CAS. He graduated from Nanjing University and previously worked as a postdoc at Humboldt University of Berlin. Dr. Wang’s research interests include formal aspects of scattering amplitudes, the application of amplitude techniques in gravitational-wave physics and the interplay between amplitudes and quantum information.

About the Program

For more information, please refer to the program website at http://iasprogram.ust.hk/particle_theory.

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