2 citations · 3 across the 3 of their papers we have counts for
3 papers
math.DS2018★ 1 cited
On the ergodicity of geodesic flows on surfaces without focal points
Weisheng Wu, Fei Liu, Fang Wang
In this article, we study the ergodicity of the geodesic flows on surfaces with no focal points. Let be a smooth connected and closed surface equipped with a Riemann…
math.DS2018★ 2 cited
On the Patterson-Sullivan measure for geodesic flows on rank manifolds without focal points
Fei Liu, Fang Wang, Weisheng Wu
In this article, we consider the geodesic flow on a compact rank Riemannian manifold without focal points, whose universal cover is denoted by . On the ideal boundary $X…
quant-ph2012
Operator perturbation theory in the backward Heisenberg picture
Fei Liu, Ding-yang Liu
We present a simple operator perturbation theory in the backward Heisenberg picture. Compared with the well-known Heisenberg picture, the revised picture is based on the backward t…