activity
20182026
most citedExploring Non-Invertible Symmetries in Free Theories

98 citations · 236 across the 13 of their papers we have counts for

collaborators

13 papers

cond-mat.str-el2026

From QED to Self-Dual Multicriticality in the Fradkin-Shenker Model

Thomas T. Dumitrescu, Pierluigi Niro, Ryan Thorngren

We consider the Fradkin-Shenker gauge-Higgs lattice model in 2+1 dimensions, i.e. the toric code deformed by an in-plane magnetic field. Its phase diagram contains…

hep-th2025

Symmetry extension by condensation defects in five-dimensional gauge theories

Matteo Bertolini, Lorenzo Di Pietro, Stefano C. Lanza +2

We investigate the symmetry structure of five-dimensional Yang-Mills theories with gauge algebra. These theories feature intertwined 0-, 1-, and 2-form symmetrie…

hep-th2024★ 3 cited

Symmetry Breaking from Monopole Condensation in QED

Thomas T. Dumitrescu, Pierluigi Niro, Ryan Thorngren

QED in three dimensions with an doublet of massless, charge-1 Dirac fermions (and no Chern-Simons term) has a symmetry…

hep-th2024★ 3 cited

Non-invertible defects on the worldsheet

Sriram Bharadwaj, Pierluigi Niro, Konstantinos Roumpedakis

We consider codimension-one defects in the theory of compact scalars on a two-dimensional worldsheet, acting linearly by mixing the scalars and their duals. By requiring that t…

hep-th2024★ 33 cited

On the Symmetry TFT of Yang-Mills-Chern-Simons theory

Riccardo Argurio, Francesco Benini, Matteo Bertolini +2

Three-dimensional Yang-Mills-Chern-Simons theory has the peculiar property that its one-form symmetry defects have non-trivial braiding, namely they are charged under the same symm…

hep-th2023★ 7 cited

Conformal boundary conditions for a 4d scalar field

Lorenzo Di Pietro, Edoardo Lauria, Pierluigi Niro

We construct unitary, stable, and interacting conformal boundary conditions for a free massless scalar in four dimensions by coupling it to edge modes living on a boundary. The bou…

hep-th2023★ 4 cited

Vacuum stability, fixed points, and phases of QED at large

Lorenzo Di Pietro, Edoardo Lauria, Pierluigi Niro

We consider three-dimensional Quantum Electrodynamics in the presence of a Chern-Simons term at level and flavors, in the limit of large and with fixed.…

hep-th2022★ 98 cited

Exploring Non-Invertible Symmetries in Free Theories

Pierluigi Niro, Konstantinos Roumpedakis, Orr Sela

Symmetries corresponding to local transformations of the fundamental fields that leave the action invariant give rise to (invertible) topological defects, which obey group-like fus…

hep-th2020★ 2 cited

3d Large Vector Models at the Boundary

Lorenzo Di Pietro, Edoardo Lauria, Pierluigi Niro

We consider a 4d scalar field coupled to large free or critical vector models, either bosonic or fermionic, on a 3d boundary. We compute the function of the classica…

hep-th2020★ 14 cited

Vacuum structure of large QCD from holography

Riccardo Argurio, Adi Armoni, Matteo Bertolini +2

We study the vacuum structure of three-dimensional gauge theory coupled to a Chern-Simons term at level and to fundamental Dirac fermions. We use a large hologr…

hep-th2019★ 12 cited

Charting the phase diagram of QCD

Riccardo Argurio, Matteo Bertolini, Francesco Mignosa +1

We study the phase diagram of gauge theory in three space-time dimensions with a Chern-Simons term at level , coupled to two sets of fundamental fermions with masses $m_…

hep-th2018★ 39 cited

QCD domain walls, Chern-Simons theories and holography

Riccardo Argurio, Matteo Bertolini, Francesco Bigazzi +2

Massive QCD at breaks CP spontaneously and admits domain walls whose dynamics and phases depend on the number of flavors and their masses. We discuss these issues within the…

hep-th2018★ 21 cited

Neutron-proton mass difference from gauge/gravity duality

Francesco Bigazzi, Pierluigi Niro

Using gauge/gravity duality as a tool, we compute the strong sector, isospin breaking induced contribution to the neutron-proton mass difference in the Witten-Sakai-Sugimoto model…