# Melting holographic mesons by applying a magnetic field

## TL;DR

This paper demonstrates that intense magnetic fields can lower the melting temperature of mesons in a quark-gluon plasma, enabling meson melting at lower temperatures through Magnetic Meson Melting (MMM) using holographic methods.

## Contribution

It introduces the concept of Magnetic Meson Melting (MMM) and constructs a holographic model to study meson behavior under strong magnetic fields in a plasma.

## Key findings

- Magnetic fields lower meson melting temperature.
- Magnetic fields decrease meson mass gap and masses.
- Mesons can melt at lower temperatures with magnetic fields.

## Abstract

In the present letter we use holographic methods to show that a very intense magnetic field lowers the temperature at which the mesons melt and decreases the mass gap of the spectrum along with their masses. Consequently, there is a range of temperatures for which mesons can be melted by applying a magnetic field instead of increasing the temperature. We term this effect Magnetic Meson Melting (MMM), and we are able to observe it 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. For such a background to exist, a scalar field has to be present and hence a scalar operator of dimension 2 appears in the gauge theory. We present here the details of the background and of the embedding of flavor D7-branes in it. Since our results are obtained from the gravity dual of the gauge theory, the analysis is also interesting from the gravitational perspective.