2016年6月27日 · Let me preface by saying that "coupling" is a favorite physicist word that is perhaps best described linguistically than rigorously; it's deployed in a few different situations. In general, we …

If two quantum systems are coupled, do they need to be restricted to a certain distance? Is there a difference between 'coupling the two qubits' and 'entangling' them using a Hadamard Gate?

2021年5月20日 · It's used in all kinds of ways sometimes. Quite often in QFT for instance when we talk about "coupling" two fields to each other we mean including a non-trivial term in the Lagrangian that …

The strong spin orbit interaction gives rise to widely separated (j 1,j 2 ) terms when weak j 1,j 2 interaction is taken into account each term is splitted into two closely spaced components having …

In this regime the Jaynes-Cummings model is fully realized, and multiple Rabi oscillations between the two eigenstates of each invariant subspace are possible. The ultrastrong coupling regime is when g …

2019年12月17日 · I am familiar with some of the basics of quantum dynamics from Sakurai, I've seen that minimum coupling hamiltonian is central to the description of matter interacting with E-M field. I …

2025年1月9日 · Clearly, it characterizes the coupling strength between a two-level atom and a bosonic field, so I believe it must be dependent on the fine-structure constant $\alpha$.

2018年7月4日 · Although I understand that accounting for relativity is needed to FULLY describe the SO coupling, why is it so difficult to find a clear explanation that separates the classical part from the …

2017年5月27日 · The above was done in the without considering Spin-Orbit coupling. When spin-orbit coupling is taken into account, each n n, ℓ ℓ state gives rise to two levels with total angular …

2017年9月21日 · I am studying the textbook An introduction to Quantum Field Theory by Peskin and Schroeder, and am not able to understand a seemly important and straightforward result on running …