63 citations · 288 across the 16 of their papers we have counts for
17 papers
Fractional Hydrodynamic Transport from the Witten Anomaly
Joe Davighi, Nakarin Lohitsiri, Napat Poovuttikul
We study the physical consequences of 't Hooft anomalies in the high-temperature limit of relativistic quantum field theories with , or more generally , global symm…
WZW terms without anomalies: generalised symmetries in chiral Lagrangians
Joe Davighi, Nakarin Lohitsiri
We consider a 4d non-linear sigma model on the coset $(\mathrm{SU}(N)_L \times \mathrm{SU}(N)_R \times \mathrm{SU}(2))/(\mathrm{SU}(N)_{L+R}\times \mathrm{U}(1))\cong \mathrm{SU}(N…
A Non-Perturbative Mixed Anomaly and Fractional Hydrodynamic Transport
Joe Davighi, Nakarin Lohitsiri, Napat Poovuttikul
We present a new non-perturbative 't Hooft anomaly afflicting a quantum field theory with symmetry group in four dimensions. We use the Adams spectral s…
Remarks on QCD with fundamental and adjoint matter
Mohamed M. Anber, Nakarin Lohitsiri, Tin Sulejmanpasic
We study 4-dimensional SU(N) gauge theory with one adjoint Weyl fermion and fundamental matter - either bosonic or fermionic. Symmetries, their 't Hooft anomalies, and the Vafa-Wit…
Toric 2-group anomalies via cobordism
Joe Davighi, Nakarin Lohitsiri
2-group symmetries arise in physics when a 0-form symmetry and a 1-form symmetry intertwine, forming a generalised group-like structure. Specialising to the cas…
Anomalies of non-Abelian finite groups via cobordism
Joe Davighi, Ben Gripaios, Nakarin Lohitsiri
We use cobordism theory to analyse anomalies of finite non-abelian symmetries in 4 spacetime dimensions. By applying the method of `anomaly interplay', which uses functoriality of…
Comments on QCD and anomalies with fundamental and adjoint matter
Nakarin Lohitsiri, Tin Sulejmanpasic
't Hooft anomaly matching is powerful for constraining the low energy phases of gauge theories. In 3d one common anomaly is the parity anomaly in a -symmetric theory where one c…
On Discrete Anomalies in Chiral Gauge Theories
Philip Boyle Smith, Avner Karasik, Nakarin Lohitsiri +1
We study two well-known chiral gauge theories with fermions in the symmetric, anti-symmetric and fundamental representations. We give a detailed description of the global s…
Omega vs. pi, and 6d anomaly cancellation
Joe Davighi, Nakarin Lohitsiri
In this note we review the role of homotopy groups in determining non-perturbative (henceforth `global') gauge anomalies, in light of recent progress understanding global anomalies…
The algebra of anomaly interplay
Joe Davighi, Nakarin Lohitsiri
We give a general description of the interplay that can occur between local and global anomalies, in terms of (co)bordism. Mathematically, such an interplay is encoded in the non-c…
Anomaly interplay in gauge theories
Joe Davighi, Nakarin Lohitsiri
We discuss anomaly cancellation in gauge theories in four dimensions. For a gauge theory defined with a spin structure, the vanishing of the bordism group $Ω_5^{\text…
Global anomalies in the Standard Model(s) and Beyond
Joe Davighi, Ben Gripaios, Nakarin Lohitsiri
We analyse global anomalies and related constraints in the Standard Model (SM) and various Beyond the Standard Model (BSM) theories. We begin by considering four distinct, but equa…
If the Weak Were Strong and the Strong Were Weak
Nakarin Lohitsiri, David Tong
We explore the phase structure of the Standard Model as the relative strengths of the SU(2) weak force and SU(3) strong force are varied. With a single generation of fermions, the…
Hypercharge Quantisation and Fermat's Last Theorem
Nakarin Lohitsiri, David Tong
What values of the Standard Model hypercharges result in a mathematically consistent quantum field theory? We show that the constraints imposed by the lack of gauge anomalies can b…
ADHM and the 4d Quantum Hall Effect
Alec Barns-Graham, Nick Dorey, Nakarin Lohitsiri +2
Yang-Mills instantons are solitonic particles in d=4+1 dimensional gauge theories. We construct and analyse the quantum Hall states that arise when these particles are restricted t…
Holographic DC conductivity and Onsager relations
Aristomenis Donos, Jerome P. Gauntlett, Tom Griffin +2
Within holography the DC conductivity can be obtained by solving a system of Stokes equations for an auxiliary fluid living on the black hole horizon. We show that these equations…
Magnetothermoelectric Response from Holography
Mike Blake, Aristomenis Donos, Nakarin Lohitsiri
In this note we study the effects of a magnetic field on transport using holographic models with broken translational invariance. We show that, after carefully subtracting off non-…