3 papers
physics.class-ph2023
More on difference between angular momentum and pseudo-angular momentum
Qi Dai, Zi-Wei Chen, Bang-Hui Hua +1
We extend the discussion on the difference between angular momentum and pseudo-angular momentum in field theory. We show that the often quoted expressions in [Phys.Rev.B 103, L1004…
physics.class-ph2023
Arbitrariness and Usefulness of the Expressions of Elastic wave's Energy, Momentum and Angular Momentum
Zi-Wei Chen, Bang-Hui Hua, Xiang-Song Chen
Elastic angular momentum is an emerging field, with some controversies on the correct field-theory expressions and the decomposition of longitudinal and transverse components. Moti…
quant-ph2022
Repeatedly readable state, spontaneous collapse, and quantum/classical boundary
Xiao-Fu Peng, Yu-Hang Luo, Jiang Zhu +5
We propose a model to identify the quantum/classical boundary. The model introduces a spontaneous collapse of state superposition: $\frac{d}{dt} ρ_{ij} =-\frac{i}{\hbar}[H,ρ]_{ij}-…