| Issue |
EPJ Web Conf.
Volume 204, 2019
XXIV International Baldin Seminar on High Energy Physics Problems “Relativistic Nuclear Physics and Quantum Chromodynamics” (Baldin ISHEPP XXIV)
|
|
|---|---|---|
| Article Number | 08005 | |
| Number of page(s) | 6 | |
| Section | Hadron Spectroscopy, Multiquarks | |
| DOI | https://doi.org/10.1051/epjconf/201920408005 | |
| Published online | 03 April 2019 | |
https://doi.org/10.1051/epjconf/201920408005
Pseudo-scalar mesons at finite temperatures from a Dyson-Schwinger-Bethe-Salpeter approach
1 Bogoliubov Laboratory of Theoretical Physics, 141980, JINR, Dubna, Russia
2 International University Dubna, Dubna, Russia
3 Helmholtz-Zentrum Dresden-Rossendorf, PF 510119, 01314 Dresden, Germany
* e-mail: dorkin@theor.jinr.ru
** e-mail: kaptari@theor.jinr.ru
Published online: 3 April 2019
The truncated Dyson-Schwinger–Bethe-Salpeter equations are employed at non-zero temperature. The truncations refer to a rainbow-ladder approximation augmented with an interaction kernel which facilitates a special temperature dependence. At low temperatures, T → 0, we recover a quark propagator from the Dyson-Schwinger (gap) equation smoothly interpolating to the T = 0 results. Utilizing that quark propagator we evaluate the Bethe-Salpeter vertex function in the pseudo-scalar qq̅ channel for the lowest boson Matsubara frequencies and find a competition of qq̅ bound states and quasi-free two-quark states at T = O (100 MeV).
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.