Quantum field theory of fluids.
Quantum field theory of fluids.
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DOI：
10.1103/physrevlett.114.071601
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发表时间：
2014-06
影响因子：
8.6
通讯作者：
B. Gripaios;Dave Sutherland
中科院分区：
文献类型：
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作者：
B. Gripaios;Dave Sutherland
场的量子理论主要基于研究非相互作用或自由场论周围的扰动，这些场论对应于量子力学谐振子的集合。普通流体的量子理论是“更自由的”，因为非相互作用理论还包含与涡旋模式相对应的量子力学自由粒子的无限集合。通过计算树和循环级别的各种相关函数，我们证明量子完美流体可以一致地表述为低能量、有效的场论。我们推测量子行为与经典流体和量子场截然不同。
The quantum theory of fields is largely based on studying perturbations around noninteracting, or free, field theories, which correspond to a collection of quantum-mechanical harmonic oscillators. The quantum theory of an ordinary fluid is "freer", in the sense that the noninteracting theory also contains an infinite collection of quantum-mechanical free particles, corresponding to vortex modes. By computing a variety of correlation functions at tree and loop level, we give evidence that a quantum perfect fluid can be consistently formulated as a low-energy, effective field theory. We speculate that the quantum behavior is radically different from both classical fluids and quantum fields.