Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-05-14
Nucl.Phys. A728 (2003) 203-225
Physics
High Energy Physics
High Energy Physics - Phenomenology
16 pages, 9 figures, REVTEX4; new references added; minor changes of the text
Scientific paper
The influence of a constant homogeneous external magnetic field $H$ on the formation and stability of quark droplets is investigated within a simple Nambu -- Jona-Lasinio model by using a thermodynamic approach. For a vanishing magnetic field stable quark droplets, which are schematically the bags of massless quarks, are allowed to exist only at $G>G_{bag}$, where $G$ is the quark coupling constant, $G_{bag}=1.37G_{crit}$, and $G_{crit}$ is the value of the coupling constant above which chiral symmetry is spontaneously broken down. On the other hand, a nonvanishing external magnetic field can induce the stability of quark droplets so that they may exist even at $G
Ebert Dietmar
Klimenko K. G.
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