title: Asymptotic freedom in strong magnetic fields.
abstract: Perturbative gluon exchange interaction between quark and antiquark, or in a 3q system, is enhanced in a magnetic field and may cause vanishing of the total qq[over ¯] or 3q mass, and even unlimited decrease of it-recently called the magnetic collapse of QCD. The analysis of the one-loop correction below shows a considerable softening of this phenomenon due to qq[over ¯] loop contribution, similar to the Coulomb case of QED, leading to approximately logarithmic damping of gluon exchange interaction (<V>≈O(1/ln|eB|)) at large magnetic field.
authors.affiliation: Institute of Theoretical and Experimental Physics, B. Cheremushkinskaya 25, 117118 Moscow, Russia.
authors.forename: M A
authors.initials: MA
authors.lastname: Andreichikov
authors.forename: V D
authors.initials: VD
authors.lastname: Orlovsky
authors.forename: Yu A
authors.initials: YA
authors.lastname: Simonov