EPJ Web Conf.
Volume 137, 2017XIIth Quark Confinement and the Hadron Spectrum
|Number of page(s)||10|
|Section||Section G: Strongly Coupled Theories|
|Published online||22 March 2017|
Theta angle in holographic QCD
Laboratoire de Physique Théorique de l’ École Normale Supérieure & Institut de Physique Théorique Philippe Meyer, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ. Paris 06, 24 rue Lhomond, 75231 Paris Cedex 05, France
a e-mail: firstname.lastname@example.org
Published online: 22 March 2017
V-QCD is a class of effective holographic models for QCD which fully includes the backreaction of quarks to gluon dynamics. The physics of the θ-angle and the axial anomaly can be consistently included in these models. We analyze their phase diagrams over ranges of values of the quark mass, Nf/Nc, and θ, computing observables such as the topological susceptibility and the meson masses. At small quark mass, where effective chiral Lagrangians are reliable, they agree with the predictions of V-QCD.
© The Authors, published by EDP Sciences, 2017
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