1995/08/31 by Elias Kiritsis, Costas Kounnas · 8 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Physics of Superconductivity and Magnetism #Pulsars and Gravitational Waves Research #gr-qc #hep-th
paper · pdf · doi:10.1016/0550-3213(95)00540-2
published as Nucl.Phys. B456 (1995) 699-731 · Minor corrections. Version to appear in Nucl. Phys. B
arxiv created 1995/10/10 · openalex publication_date 1995/12/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04
A large class of four-dimensional supersymmetric ground states of closed superstrings with a non-zero mass gap are constructed. For such ground states we turn on chromo-magnetic fields as well as curvature. The exact spectrum as function of the chromo-magnetic fields and curvature is derived. We examine the behavior of the spectrum, and find that there is a maximal value for the magnetic field H\rm max∼ M\rm planck2. At this value all states that couple to the magnetic field become infinitely massive and decouple. We also find tachyonic instabilities for strong background fields of the order \cal O(μM\rm planck) where μ is the mass gap of the theory. Unlike the field theory case, we find that such ground states become stable again for magnetic fields of the order \cal O(M2\rm planck). The implications of these results are discussed.