| dc.description.abstract | One of the interesting properties of QCD is the fact that the carriers of the
strong force, gluons, are able to interact with themselves. This allows for
the gluons to form bound states in the form of glueballs. To find out more
about the properties of these glueballs, we study how their mass spectrum
reacts to an external magnetic field in the case of strong interactions. For
this, we use improved holographic QCD to construct a gravitational dual
to pure Yang-Mills theory which is coupled to a constant external magnetic
field. Surprisingly, we find that for increasing values of the magnetic field
strength, the masses decrease. This is the opposite of effects known from
Landau quantization, where a stronger external magnetic field heightens
the mass spectra. | |
