Jul 26 – 30, 2021
US/Eastern timezone

Sp(2N) gauge theories on the lattice: status and perspectives

Jul 30, 2021, 5:15 AM
Oral presentation Particle physics beyond the Standard Model Particle physics beyond the Standard Model


Biagio Lucini (Swansea University)


Among novel strong interactions beyond the standard being currently investigated, the Sp(4) gauge theory with two fundamental and three antisymmetric fermions is compatible with the pseudo-Nambu-Goldstone-Boson (pNGB) mechanism of electroweak symmetry breaking and the implementation of partial top compositeness. Unlike in QCD, the lack of a manifest experimental counterpart and the scarcity of related works in the lattice literature require a cautious and safe approach to numerical studies of Sp(4) and, more in general, Sp(2N) gauge theories. This has resulted in recent wide explorations of the parameter space of Sp(2N) theories that also include regimes not directly connected with the original motivations related to the pNGB mechanism. In this contribution, I discuss previous calculations of Sp(2N) theories in pure gauge, in the quenched limit and with single-representation dynamical matter. I shall focus on the function of those investigations in connection with studies of the pNGB mechanism of electroweak symmetry breaking and partial top compositeness, highlighting the key milestones in our journey towards current calculations aimed to approach the phenomenologically relevant regime of the system. Potential applications to the SIMP origin of dark matter are also briefly discussed.

Primary author

Biagio Lucini (Swansea University)


Prof. C.-J. David Lin (NYCU) Davide Vadacchino (Trinity College Dublin) Deog-Ki Hong (Pusan National University) Ed Bennett (Swansea University) Ho Hsiao (NYCU) Mr Jack Holligan (Swansea University) Jong-Wan Lee (Pusan National University) Prof. Maurizio Piai (Swansea University) Dr Michele Mesiti (Swansea University)

Presentation materials