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arXiv 1807.07046quant-phgr-qc
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玻色-爱因斯坦凝聚体与引力波的相互作用

Interaction of a Bose-Einstein condensate with a gravitational wave

Ralf Schützhold

备注：
to appear in Phys. Rev. D
发表信息：
Phys. Rev. D 98, 105019 (2018)
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摘要：

部分是受到最近关于引力波探测的提议的启发，我们研究了引力波与玻色-爱因斯坦凝聚体的相互作用。对于静止的均匀凝聚体，引力波不会直接产生声子（最低阶），而只是影响现有的声子或通过量子压缩间接产生声子对--这种效应已经在文献中被考虑过。然而，对于非均匀的凝聚流，例如涡旋晶格，引力波的影响可以直接产生声子。这种更直接的相互作用可能更有效，也许有助于使这种引力波的检测机制向实验可实现性迈进一步--尽管还有很长的路要走。最后，我们认为超流体氦可能在这方面提供一些优势。

英文摘要：

Partly motivated by recent proposals for the detection of gravitational waves, we study their interaction with Bose-Einstein condensates. For homogeneous condensates at rest, the gravitational wave does not directly create phonons (to lowest order), but merely affects existing phonons or indirectly creates phonon pairs via quantum squeezing -- an effect which has already been considered in the literature. For inhomogeneous condensate flows such as a vortex lattice, however, the impact of the gravitational wave can directly create phonons. This more direct interaction can be more efficient and could perhaps help bringing such a detection mechanism for gravitational waves a step closer towards experimental realizability -- even though it is still a long way to go. Finally, we argue that super-fluid Helium might offer some advantages in this respect.

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。

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