85 citations · 317 across the 13 of their papers we have counts for
13 papers
Anomaly Enforced Gaplessness and Symmetry Fractionalization for Symmetries
T. Daniel Brennan
Symmetries and their anomalies give strong constraints on renormalization group (RG) flows of quantum field theories. Recently, the identification of a theory's global symmetries w…
Introduction to Generalized Global Symmetries in QFT and Particle Physics
T. Daniel Brennan, Sungwoo Hong
Generalized symmetries (also known as categorical symmetries) is a newly developing technique for studying quantum field theories. It has given us new insights into the structure o…
Coupling a Cosmic String to a TQFT
T. Daniel Brennan, Sungwoo Hong, Lian-Tao Wang
A common framework of particle physics consists of two sectors of particles, such as the Standard Model and a dark sector, with some interaction between them. In this work, we init…
Line Defect Quantum Numbers & Anomalies
T. Daniel Brennan, Clay Cordova, Thomas T. Dumitrescu
We explore the connection between the global symmetry quantum numbers of line defects and 't Hooft anomalies. Relative to local (point) operators, line defects may transform projec…
Callan-Rubakov Effect and Higher Charge Monopoles
T. Daniel Brennan
In this paper we study the interaction between magnetic monopoles and massless fermions. In the low energy limit, the monopole's magnetic field polarizes the fermions into purely i…
Index-like Theorem for Massless Fermions in Spherically Symmetric Monopole Backgrounds
T. Daniel Brennan
In this paper we study massless fermions coupled to spherically symmetric monopoles without Yukawa couplings between the Higgs and fermion fields. The corresponding Dirac o…
Defining the Deformation on
T. Daniel Brennan, Christian Ferko, Emil Martinec +1
We show that the deformation of two-dimensional quantum field theory on is well-defined and solvable at the quantum level. Flow equations for the…
A Non-Abelian Analogue of DBI from
T. Daniel Brennan, Christian Ferko, Savdeep Sethi
The Dirac action describes the physics of the Nambu-Goldstone scalars found on branes. The Born-Infeld action defines a non-linear theory of electrodynamics. The combined Dirac-Bor…
Monopole Bubbling via String Theory
T. Daniel Brennan
In this paper, we propose a string theory description of generic 't Hooft defects in supersymmetric gauge theories. We show that the space of supersymmetric…
The String Landscape, the Swampland, and the Missing Corner
T. Daniel Brennan, Federico Carta, Cumrun Vafa
We give a brief overview of the string landscape and techniques used to construct string compactifications. We then explain how this motivates the notion of the swampland and revie…
Two Loop Unification of Non-SUSY SO(10) GUT with TeV Scalars
T. Daniel Brennan
In this paper we examine gauge coupling unification of the the non-SUSY SO(10) grand unified theory proposed by Babu and Mohapatra at the two loop level. This theory breaks down to…
On the Magnetosphere of an Accelerated Pulsar
T. Daniel Brennan, Samuel E. Gralla
We report on a remarkable class of exact solutions to force-free electrodynamics that has four-current along the light cones of an arbitrary timelike worldline in flat spacetime. N…
Exact Solutions to Force-Free Electrodynamics in Black Hole Backgrounds
T. Daniel Brennan, Samuel E. Gralla, Ted Jacobson
A shared property of several of the known exact solutions to the equations of force-free electrodynamics is that their charge-current four-vector is \textit{null}. We examine the g…