Interaction-stabilized steady states in the driven O(N) model
Interaction-stabilized steady states in the driven O(N) model
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DOI：
10.1103/physrevb.93.174305
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发表时间：
2015-06
影响因子：
3.7
通讯作者：
A. Chandran;S. Sondhi
中科院分区：
文献类型：
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作者：
A. Chandran;S. Sondhi
研究了无限N极限下周期驱动的玻色标量场理论。众所周知，自由理论可以在质量项的单色调制下经历参数共振，从而无限地吸收能量。在无限N极限中的相互作用终止了对于UV截止和驱动频率的任何选择的这种增加。稳态具有非平凡的相关性，并且与驱动器同步。无限N下的O（N）模型提供了第一个干净的相互作用量子系统的例子，该系统在任何驱动频率下都不会加热到无限温度。
We study periodically driven bosonic scalar field theories in the infinite N limit. It is well-known that the free theory can undergo parametric resonance under monochromatic modulation of the mass term and thereby absorb energy indefinitely. Interactions in the infinite N limit terminate this increase for any choice of the UV cutoff and driving frequency. The steady state has non-trivial correlations and is synchronized with the drive. The O(N) model at infinite N provides the first example of a clean interacting quantum system that does not heat to infinite temperature at any drive frequency.