57 citations · 253 across the 20 of their papers we have counts for
21 papers
The two-flavor Schwinger model at 50: Solving Coleman's puzzles
Gabriel Cuomo, Ross Dempsey, Andrei Katsevich +4
In his 1976 paper "More about the massive Schwinger model", Coleman introduced -dimensional Quantum Electrodynamics coupled to two charged massive fermions. By applying Abelia…
Vacuum structure of gapped QCD theories from the infinite Hamiltonian lattice
Ross Dempsey, Anna-Maria E. Glück, Silviu S. Pufu +1
Gapped two-dimensional gauge theories with massless fermions generically have rich vacuum structures consisting of many degenerate vacua related by the action of topological line o…
Conformal collider bootstrap in SYM
Ross Dempsey, Robin Karlsson, Silviu S. Pufu +2
We use a combination of perturbation theory, holography, supersymmetric localization, integrability, and numerical conformal bootstrap methods to constrain the energy-energy correl…
Integral constraints for super-Yang-Mills from a squashed sphere
Shai M. Chester, Ross Dempsey, Debaditya Pramanik +1
Supersymmetric localization and Ward identities have been used in the past several years to derive two integral constraints on the four-point function of the stress-tensor multiple…
Infinite matrix product states for -dimensional gauge theories
Ross Dempsey, Anna-Maria E. Glück, Silviu S. Pufu +1
We present a matrix product operator construction that allows us to represent the lattice Hamiltonians of (abelian or non-abelian) gauge theories in a local and manifestly translat…
Higher-derivative corrections in M-theory from precision numerical bootstrap
Shai M. Chester, Ross Dempsey, Silviu S. Pufu
We study higher-derivative corrections to the graviton scattering amplitude in M-theory, via the stress tensor correlator of 3d $\text{U}(N)_k\times \text{U}(N)_{-…
More About the Lattice Hamiltonian for Adjoint QCD
Ross Dempsey, Silviu S. Pufu, Benjamin T. Søgaard +1
In our earlier work arXiv:2311.09334, we introduced a lattice Hamiltonian for Adjoint QCD using staggered Majorana fermions. We found the gauge invariant space of states explic…
Small Circle Expansion for Adjoint QCD with Periodic Boundary Conditions
Ross Dempsey, Igor R. Klebanov, Silviu S. Pufu +1
We study -dimensional gauge theory coupled to one adjoint multiplet of Majorana fermions on a small spatial circle of circumference . Using periodic boundary…
Global Symmetry and Integral Constraint on Superconformal Lines in Four Dimensions
Ross Dempsey, Bendeguz Offertaler, Silviu S. Pufu +1
We study properties of point-like impurities preserving flavor symmetry and supersymmetry in four-dimensional field theories. At large distances, such impurities are…
Level Repulsion in super-Yang-Mills via Integrability, Holography, and the Bootstrap
Shai M. Chester, Ross Dempsey, Silviu S. Pufu
We combine supersymmetric localization with the numerical conformal bootstrap to bound the scaling dimension and OPE coefficient of the lowest-dimension operator in $\mathcal{N} =…
Lattice Hamiltonian for Adjoint QCD
Ross Dempsey, Igor R. Klebanov, Silviu S. Pufu +1
We introduce a Hamiltonian lattice model for the -dimensional gauge theory coupled to one adjoint Majorana fermion of mass . The discretization of the co…
Phase Diagram of the Two-Flavor Schwinger Model at Zero Temperature
Ross Dempsey, Igor R. Klebanov, Silviu S. Pufu +2
We examine the phase structure of the two-flavor Schwinger model as a function of the -angle and the two masses, and . In particular, we find interesting effects at $…
Compactifying the Kerr-Schild Double Copy
Ross Dempsey, Peter Weck
We show that the classical double copy relationship for Kerr-Schild spacetimes can be dimensionally reduced to give a natural notion of the double copy for Kaluza-Klein theory with…
Adjoint Majorana QCD at Finite
Ross Dempsey, Igor R. Klebanov, Loki L. Lin +1
The mass spectrum of -dimensional gauge theory coupled to a Majorana fermion in the adjoint representation has been studied in the large limit using Light…
Discrete Chiral Symmetry and Mass Shift in Lattice Hamiltonian Approach to Schwinger Model
Ross Dempsey, Igor R. Klebanov, Silviu S. Pufu +1
We revisit the lattice formulation of the Schwinger model using the Kogut-Susskind Hamiltonian approach with staggered fermions. This model, introduced by Banks et al., contains th…
Bootstrapping super-Yang-Mills on the conformal manifold
Shai M. Chester, Ross Dempsey, Silviu S. Pufu
We combine supersymmetric localization results with numerical bootstrap techniques to compute upper bounds on the low-lying CFT data of super-Yang-Mills theory as a…
Exact Symmetries and Threshold States in Two-Dimensional Models for QCD
Ross Dempsey, Igor R. Klebanov, Silviu S. Pufu
Two-dimensional SU gauge theory coupled to a Majorana fermion in the adjoint representation is a nice toy model for higher-dimensional gauge dynamics. It possesses a multitude…
Formation of Orion Fingers
Ross Dempsey, Nadia L. Zakamska, James E. Owen
"Orion fingers" are a system of dozens of bowshocks, with the wings of shocks pointing to a common system of origin, which is centered on a dynamically disintegrating system of sev…
Kerr-Schild Double Copy and Complex Worldlines
Ibrahima Bah, Ross Dempsey, Peter Weck
We use the classical double copy to identify a necessary condition for Maxwell theory sources to constitute single copies of Kerr-Schild solutions to Einstein's equations. In the c…
The spatial extension of extended narrow line regions in MaNGA AGN
Jianhang Chen, Yong Shi, Ross Dempsey +10
In this work, we revisit the size-luminosity relation of the extended narrow line regions (ENLRs) using a large sample of nearby active galactic nuclei (AGN) from the Mapping Nearb…
The Size-Luminosity Relationship of Quasar Narrow-Line Regions
Ross Dempsey, Nadia Zakamska
The presence of an active galactic nucleus (AGN) can strongly affect its host. Due to the copious radiative power of the nucleus, the effects of radiative feedback can be detected…