Abstract
We use the replica trick approach to calculate, in the large- limit, the entanglement -function in two-dimensional quantum chromodynamics with the gauge group and quark in the fundamental representation (’t Hooft model). We show explicitly that the result is equal to a sum (with certain numerical coefficients) of entanglement -functions of free massive scalars, which represent mesons in the spectrum of the ’t Hooft model. Interestingly, each meson contributes as a pointlike particle. We provide an explanation for why this is the case.
- Received 18 April 2015
DOI:https://doi.org/10.1103/PhysRevD.92.025048
© 2015 American Physical Society