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001     910662
005     20230310131349.0
024 7 _ |a 10.1140/epja/s10050-022-00821-8
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037 _ _ |a FZJ-2022-04035
082 _ _ |a 530
100 1 _ |a Hildenbrand, Fabian
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245 _ _ |a Lattice Monte Carlo simulations with two impurity worldlines
260 _ _ |a Heidelberg
|c 2022
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500 _ _ |a This work was supported in part by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No. 101018170), by DFG and NSFC through funds provided to the Sino-German CRC 110 “Symmetries and the Emergence of Structure in QCD” (NSFC Grant No. 11621131001, DFG Grant No. TRR110). The work of UGM was supported in part by VolkswagenStiftung (Grant no. 93562) and by the CAS President’s International Fellowship Initiative (PIFI) (Grant No. 2018DM0034). The work of DL is supported in part by the U.S. Department of Energy (Grant No. DE-SC0018638) and the Nuclear Computational Low- Energy Initiative (NUCLEI) SciDAC project.
520 _ _ |a We develop the impurity lattice Monte Carlo formalism, for the case of two distinguishable impurities in a bath of polarized fermions. The majority particles are treated as explicit degrees of freedom, while the impurities are described by worldlines. The latter serve as localized auxiliary fields, which affect the majority particles. We apply the method to non-relativistic three-dimensional systems of two impurities and a number of majority particles where both the impurity-impurity interaction and the impurity-majority interaction have zero range. We consider the case of an attractive impurity-majority interaction, and we study the formation and disintegration of bound states as a function of the impurity-impurity interaction strength. We also discuss the potential applications of this formalism to other quantum many-body systems.
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536 _ _ |a DFG project 196253076 - TRR 110: Symmetrien und Strukturbildung in der Quantenchromodynamik (196253076)
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536 _ _ |a Nuclear Lattice Simulations (jara0015_20200501)
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700 1 _ |a Elhatisari, Serdar
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700 1 _ |a Lähde, Timo A.
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700 1 _ |a Lee, Dean
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700 1 _ |a Meißner, Ulf-G.
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773 _ _ |a 10.1140/epja/s10050-022-00821-8
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