78 citations · 160 across the 10 of their papers we have counts for
13 papers · 1 filter
Does QFT make sense in non-integer dimensions?
Diego Delmastro, Yan-Yan Li, Dikshant Rathore
We revisit the old problem of analytically continuing QFTs to fractional dimension . We observe that common theories like QCD and QED have branch cuts in the complex…
Non-Local Conserved Currents and Continuous Non-Invertible Symmetries
Diego Delmastro, Adar Sharon, Yunqin Zheng
We embark on a systematic study of continuous non-invertible symmetries, focusing on 1+1d CFTs. We describe a generalized version of Noether's theorem, where continuous non-inverti…
Fermion-Monopole Scattering in the Standard Model
Marieke van Beest, Philip Boyle Smith, Diego Delmastro +2
We study the scattering of fermions off 't Hooft lines in the Standard Model. A long-standing paradox suggests that the outgoing fermions necessarily carry fractional quantum numbe…
Monopoles, Scattering, and Generalized Symmetries
Marieke van Beest, Philip Boyle Smith, Diego Delmastro +2
We reconsider the problem of electrically charged, massless fermions scattering off magnetic monopoles. The interpretation of the outgoing states has long been a puzzle as, in cert…
RG flows in 2d QCD
Diego Delmastro, Jaume Gomis
2d QCD, Yang-Mills theory with gauge group G and massless quarks in representations (R_\ell, R_r) of G, flows in the infrared to a CFT or a TQFT depending on whether spectrum is ga…
Anomalies and Symmetry Fractionalization
Diego Delmastro, Jaume Gomis, Po-Shen Hsin +1
We study ordinary, zero-form symmetry and its anomalies in a system with a one-form symmetry . In a theory with one-form symmetry, the action of on charged line operator…
Infrared phases of 2d QCD
Diego Delmastro, Jaume Gomis, Matthew Yu
We derive the necessary and sufficient conditions for a 2d QCD theory of massless gluons and left and right chiral quarks in arbitrary representations of a gauge group G to develop…
Global Anomalies on the Hilbert Space
Diego Delmastro, Davide Gaiotto, Jaume Gomis
We show that certain global anomalies can be detected in an elementary fashion by analyzing the way the symmetry algebra is realized on the torus Hilbert space of the anomalous the…
Domain Walls in 4d N=1 Supersymmetric Yang-Mills
Diego Delmastro, Jaume Gomis
super Yang-Mills (SYM) with simply connected gauge group has gapped vacua arising from the spontaneously broken discrete -symmetry, where is th…
Symmetries of Abelian Chern-Simons Theories and Arithmetic
Diego Delmastro, Jaume Gomis
We determine the unitary and anti-unitary Lagrangian and quantum symmetries of arbitrary abelian Chern-Simons theories. The symmetries depend sensitively on the arithmetic properti…
Dynamics of QCD with Rank-Two Quarks And Duality
Changha Choi, Diego Delmastro, Jaume Gomis +1
Three-dimensional gauge theories coupled to fermions can develop interesting nonperturbative dynamics. Here we study in detail the dynamics of gauge theories coupled to a D…
BMS in higher space-time dimensions and Non-relativistic BMS
D. G. Delmastro
Master's thesis. We present a study of the BMS Group is higher space-time dimensions, and the extension of this group to non-relativistic systems.
Non-Relativistic BMS algebra
Carles Batlle, Diego Delmastro, Joaquim Gomis
We construct two possible candidates for the non-relativistic algebra in 4 space-time dimensions by contracting the original relativistic alge…