2020/02/29 by Daniel Ávila, Leonardo Patiño
Physics and Astronomy · #Black Holes and Theoretical Physics #Deconfinement #Field (mathematics) #High-Energy Particle Collisions Research #Magnetic field #Mass gap #Meson #Plasma #Quantum Chromodynamics and Particle Interactions #Quark–gluon plasma #Rho meson #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1007/jhep06(2020)010
published as JHEP 06 (2020) 010 · 37 pages, 15 figures
openalex created_date 2020/02/14 · openalex publication_date 2020/06/01 · arxiv created 2020/06/06 · arxiv updated 2020/06/09 · openalex updated_date 2026/08/05
A bstract We extend our analysis of holographic meson dissociation in the presence of an intense magnetic field. In addition to the previously known critical temperature above which the mesons melt, we found that for certain magnetic field intensities there exists a second lower critical temperature, below which stable mesons cease to exist. While we showed before that there is a range of high temperatures for which mesons can be melted by changing the magnetic field intensity, here we show that, as a consequence of the second critical point, there is also a range of low temperatures for which this phenomenom, which we term Magnetic Meson Melting (MMM), can be triggered. Additionaly, we also show that the magnetic field decreases the mass gap of the meson spectrum along with their masses. We are able to observe this by constructing a configuration that makes it possible to apply gauge/gravity methods to study fundamental degrees of freedom in a quark-gluon plasma subject to a magnetic field as intense as that expected in high energy collisions. This is achieved by the confection of a ten-dimensional background that is dual to the magnetized plasma and nonetheless permits the embedding of D7-branes in it. The main difference with previous approaches, which in consequence gives the novel results, is that the magnetic field retroacts in the geometry itself, as opposed to be confined to the world volume of the probe D7-branes.