EPJ Web Conf.
Volume 206, 2019XLVIII International Symposium on Multiparticle Dynamics (ISMD 2018)
|Number of page(s)||9|
|Section||Perturbative and Non-Perturbative Features of QCD|
|Published online||19 April 2019|
QCD strings and the U(1) problem
Institute of Advanced Studies, Nanyang Technological University, Singapore
2 School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore
* e-mail: firstname.lastname@example.org
Published online: 19 April 2019
We promote the usual QCD θ-parameter to a field and interpret it as the phase of the quark condensate, which becomes nontrivial when topological defects, vortices in our formulation, are induced in the quark condensate by the QCD strings (chromoelectric flux tubes). The QCD topological term emerges naturally as a derivative coupling between the Chern-Simons current and a supercurrent in the quark condensate. This new formulation can address the UA(1) problem and leads to the chiral magnetic eﬀects. It is possible that in this formulation the strong CP problem can be avoided without the axion particle.
© 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.