What Does Negative Temperature Mean?

• Effective Field Theories
• The Off-shell Electromagnetic Form Factors of Pions and Kaons in Chiral Perturbation Theory
• Chiral Perturbation Theory
• Chiral Dynamics in Nucleons and Nuclei
• European Synchrotron Radiation Facility
• SAXIER: Small-Angle X-ray Scattering Initiative for Europe
• Germany, Hamburg: Hamburger Synchrotronstrahlungslabor HASYLAB
• Canadian Light Source
• National Synchrotron Radiation Research Center
• Lyncean Technologies, Inc.
• ISA
• MAX-lab, Lund University, Sweden