Bruckmann, Falk and Wellnhofer, Jacob (2018) Diagrammatic representation of scalar QCD and sign problem at nonzero chemical potential. PHYSICAL REVIEW D, 97 (1): 014501. ISSN 2470-0010, 2470-0029
Full text not available from this repository.Abstract
We consider QCD at strong coupling with scalar quarks coupled to a chemical potential. Performing the link integrals we present a diagrammatic representation of the path integral weight. It is based on mesonic and baryonic building blocks, in close analogy to fermionic QCD. Likewise, the baryon loops are subject to a manifest conservation of the baryon number. The sign problem is expected to disappear in this representation and we do confirm this for three flavors, where a scalar baryon can be built and, thus, a dependence on the chemical potential occurs. For higher flavor number, we analyze examples for a potential sign problem in the baryon sector and conjecture that all weights are positive upon exploring the current conservation of each flavor.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | LATTICE QCD; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 23 Mar 2020 11:02 |
| Last Modified: | 23 Mar 2020 11:02 |
| URI: | https://pred.uni-regensburg.de/id/eprint/15213 |
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