# Quark Matter 2012

12-18 August 2012
US/Eastern timezone

## A way to acquire some current quark mass from a general relativistic effect

16 Aug 2012, 16:00
2h

Poster New theoretical developments

### Speaker

Dr Thomas Kiess (self)

### Description

We calculate a way to acquire some current quark mass from a general relativistic effect. For a bare quark, we model that boundary conditions on the spacetime metric can plausibly couple the value of current quark mass to the charge, via external pressure (e.g., as supplied by a background field) at sub-fm length scales. This mechanism acquires some (up to ~ 40%) current quark mass “from” the charge. To construct an approximate metric, we model a bare quark as a spherically symmetric static perfect fluid with charge, using a recent exact Maxwell-Einstein metric for the interior, out to a radius r at which the boundary condition is to match to the Reissner-Nordström metric (for spacetime external to a charged mass). At r, the model produces internal pressure, which should be matched to external pressure. For reported values of quark charges q and bare masses mq, this construction produces sub-fm radii. Although the metric at this radius differs only perturbatively from a flat spacetime, the matching condition is more significant and couples the current quark mass to the charge.

### Primary author

Dr Thomas Kiess (self)

 Poster