Journal Article

FZJ-2022-04035

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Lattice Monte Carlo simulations with two impurity worldlines

Hildenbrand, F. (Corresponding author)FZJ* ; Elhatisari, S.Extern* ; Lähde, T. A.FZJ* ; Lee, D.Extern* ; Meißner, U.-G.FZJ*

2022
Springer Heidelberg

This record in other databases:    

Please use a persistent id in citations: http://hdl.handle.net/2128/32276  doi:10.1140/epja/s10050-022-00821-8

Abstract: 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.

Note: 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.

---

Contributing Institute(s):

1. Theorie der Starken Wechselwirkung (IAS-4)

Research Program(s):

1. 5111 - Domain-Specific Simulation Data Life Cycle Labs (SDLs) and Research Groups (POF4-511) (POF4-511)
2. DFG project 196253076 - TRR 110: Symmetrien und Strukturbildung in der Quantenchromodynamik (196253076) (196253076)
3. Nuclear Lattice Simulations (jara0015_20200501) (jara0015_20200501)

Appears in the scientific report 2022

---

Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Springer ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

---