arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0902.0691math-phmath.DGmath.MP
收藏

关于量子力学的某些流体力学问题

On some hydrodynamical aspects of quantum mechanics

Mauro Spera

摘要:

在本文中,我们首先建立了一个理想的二维流体流动的自旋和涡度之间的类比,基于不可约的SU(2)的酉表示的Borel-Weil contradiction,并期待在随后的自旋波函数附加的Madelung-Bohm速度。我们还表明,在有限维几何量子力学的框架下,薛定谔速度场在投影希尔伯特空间是发散自由的(是Killing相对于Fubini-Study度规),并满足定态欧拉方程,与压力成正比的哈密顿不确定性(平方)。我们明确计算这种“薛定谔流体”的压力梯度,并确定其临界点。它的涡度也被计算和显示依赖于能级的间距。这些结果来自于在任何(有限维)Riemannian流形中有效的Killing向量场的流体动力学性质,可能具有独立的兴趣。

英文摘要:

In this note we first set up an analogy between spin and vorticity of a perfect 2d-fluid flow, based on the Borel-Weil contruction of the irreducible unitary representations of SU(2), and looking at the Madelung-Bohm velocity attached to the ensuing spin wave functions. We also show that, in the framework of finite dimensional geometric quantum mechanics, the Schrödinger velocity field on projective Hilbert space is divergence-free (being Killing with respect to the Fubini-Study metric) and fulfils the stationary Euler equation, with pressure proportional to the Hamiltonian uncertainty (squared). We explicitly compute the pressure gradient of this "Schrödinger fluid" and determine its critical points. Its vorticity is also calculated and shown to depend on the spacings of the energy levels. These results follow from hydrodynamical properties of Killing vector fields valid in any (finite dimensional) Riemannian manifold, of possible independent interest.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑