Analytical approach to the Bose polaron problem in one dimension
Analytical approach to the Bose polaron problem in one dimension
复制标题
一维玻色极化子问题的解析方法
DOI:
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发表时间:
2017
期刊:
影响因子:
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通讯作者:
H. Hammer
中科院分区:
文献类型:
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作者:
A. Volosniev;H. Hammer
We discuss the ground state properties of a one-dimensional bosonic system doped with an impurity (the so-called Bose polaron problem). We introduce a formalism that allows us to calculate analytically the thermodynamic zero-temperature properties of this system with weak and moderate boson-boson interaction strengths for any boson-impurity interaction. Our approach is validated by comparing to exact quantum Monte Carlo calculations. In addition, we test the method in finite size systems using numerical results based upon the similarity renormalization group. We argue that the introduced approach provides a simple analytical tool for studies of strongly interacting impurity problems in one dimension.