Journal article

Publication year: 2006

Journal: Physical Review D

Volume number: 73

Issue number: 9

ISSN: 1550-7998

eISSN: 1550-2368

Open access status: Green

DOI Link: https://doi.org/10.1103/PhysRevD.73.096004

Publisher: American Physical Society

Abstract: 
We investigate 4-quark (qq (q) over bar (q) over bar) systems as well as multiquark states with a large number of quarks and antiquarks using the chromodielectric model. In the former type of systems the flux distribution and the corresponding energy of such systems for planar and nonplanar geometries are studied. From the comparison to the case of two independent q (q) over bar -strings we deduce the interaction potential between two strings. We find an attraction between strings and a characteristic string flip if there are two degenerate string combinations between the four particles. The interaction shows no strong Van-der-Waals forces and the long range behavior of the potential is well described by a Yukawa potential, which might be confirmed in future lattice calculations. The multiquark states develop an inhomogeneous porous structure even for particle densities large compared to nuclear matter constituent quark densities. We present first results of the dependence of the system on the particle density pointing towards a percolation type of transition from a hadronic matter phase to a quark matter phase. The critical energy density is found at epsilon(c)=1.2 GeV/fm(3).

Harvard Citation style: Martens, G., Greiner, C., Leupold, S. and Mosel, U. (2006) Interactions of multiquark states in the chromodielectric model, Physical Review D, 73(9), Article 096004. https://doi.org/10.1103/PhysRevD.73.096004

APA Citation style: Martens, G., Greiner, C., Leupold, S., & Mosel, U. (2006). Interactions of multiquark states in the chromodielectric model. Physical Review D. 73(9), Article 096004. https://doi.org/10.1103/PhysRevD.73.096004