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摘要翻译：
本文利用解析变元和大尺度蒙特卡罗计算，研究了两组分玻色-爱因斯坦凝聚体中不同复杂超流相之间的相变性质，当两组分之间的非耗散阻力变化时。我们专注于理解拓扑缺陷在各种相变中的作用，并发展涡旋-物质论点，允许对相图进行解析描述。我们发现涨落诱导的涡旋物质的行为要复杂得多，与单组分超流体的行为有本质的不同。我们提出并数值研究了一种新的阻力诱导的“抢先涡圈扩散”转变。在许多多元系统中，这种转变可能是一个相当普遍的特征，在这些系统中，对称性由几种相互竞争的涡旋环组成的气体恢复。
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英文标题：
《Preemptive vortex-loop proliferation in multicomponent interacting
Bose--Einstein condensates》
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作者：
E. K. Dahl, E. Babaev, S. Kragset, and A. Sudbo
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最新提交年份：
2008
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分类信息：
一级分类：Physics 物理学
二级分类：Statistical Mechanics 统计力学
分类描述：Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变，热力学，场论，非平衡现象，重整化群和标度，可积模型，湍流
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一级分类：Physics 物理学
二级分类：High Energy Physics - Theory 高能物理-理论
分类描述：Formal aspects of quantum field theory. String theory, supersymmetry and supergravity.
量子场论的形式方面。弦理论，超对称性和超引力。
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英文摘要：
We use analytical arguments and large-scale Monte Carlo calculations to investigate the nature of the phase transitions between distinct complex superfluid phases in a two-component Bose--Einstein condensate when a non-dissipative drag between the two components is being varied. We focus on understanding the role of topological defects in various phase transitions and develop vortex-matter arguments allowing an analytical description of the phase diagram. We find the behavior of fluctuation induced vortex matter to be much more complex and substantially different from that of single-component superfluids. We propose and investigate numerically a novel drag-induced ``preemptive vortex loop proliferation'' transition. Such a transition may be a quite generic feature in many multicomponent systems where symmetry is restored by a gas of several kinds of competing vortex loops.
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PDF链接：
https://arxiv.org/pdf/802.2548
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