Lee M Howard
Department of Physics and Astronomy, University of Georgia, Athens, Georgia 30602, USA.
Phys Rev Lett. 2007 Mar 16;98(11):110403. doi: 10.1103/PhysRevLett.98.110403. Epub 2007 Mar 12.
The ergodic hypothesis is viewed as one that is physically measurable through scattering by an external probe. Linear response theory is used to derive a general ergodic condition on the response functions. It is shown that the same condition is also implied by Birkhoff's theorem. This coincidence allows us to shed light on the abstract terms of the theorem via classical many-body models.
遍历假设被视为一种可通过外部探测器的散射进行物理测量的假设。线性响应理论被用于推导响应函数上的一般遍历条件。结果表明，伯克霍夫定理也隐含了相同的条件。这种巧合使我们能够通过经典多体模型来阐明该定理的抽象术语。
