87 citations · 538 across the 24 of their papers we have counts for
26 papers
MGKDB: An IMAS-aligned multicode gyrokinetic simulation database for reproducible fusion turbulence modeling and data-driven analysis
Craig Michoski, David R. Hatch, Dongyang Kuang +14
Expensive fusion simulations are commonly preserved in code-specific formats that limit discovery, comparison, and reuse. We present the Multiscale GyroKinetic DataBase (MGKDB), an…
Confinement transition to gravitational waves in the one-flavor Hyper Stealth Dark Matter theory
V. Ayyar, R. C. Brower, G. T. Fleming +11
The thermodynamics of the gauge theory with a single flavor of fundamental quarks is analyzed on the lattice with dynamical fermion simulations, which is the low-energy sec…
Finite Temperature Transition in Hyper Stealth Dark Matter using Möbius Domain Wall Fermions
Venkitesh Ayyar, Nobuyuki Matsumoto, Aaron S. Meyer +1
The first-order confinement transition of a strongly coupled composite dark matter theory can provide a possible source of gravitational waves in the early universe. In this work,…
Exploring Composite Dark Matter with an SU(4) gauge theory with 1 fermion flavor
Venkitesh Ayyar, LSD collaboration
Several SU(N) gauge theories have been explored as candidates for producing stable dark matter particles that can explain their relative abundance, while also evading current const…
The Operator Product Expansion for Radial Lattice Quantization of 3D Theory
Venkitesh Ayyar, Richard C. Brower, George T. Fleming +4
At its critical point, the three-dimensional lattice Ising model is described by a conformal field theory (CFT), the 3d Ising CFT. Instead of carrying out simulations on Euclidean…
Optimizing Staggered Multigrid for Exascale performance
Venkitesh Ayyar, Richard Brower, M. A. Clark +2
Adaptive multi-grid methods have proven very successful in dealing with critical slow down for the Wilson-Dirac solver in lattice gauge theory. Multi-grid algorithms developed for…
Identifying Transients in the Dark Energy Survey using Convolutional Neural Networks
Venkitesh Ayyar, Robert Knop, Autumn Awbrey +2
The ability to discover new transients via image differencing without direct human intervention is an important task in observational astronomy. For these kind of image classificat…
Optimization of Software on High Performance Computing Platforms for the LUX-ZEPLIN Dark Matter Experiment
Venkitesh Ayyar, Wahid Bhimji, Maria Elena Monzani +3
High Energy Physics experiments like the LUX-ZEPLIN dark matter experiment face unique challenges when running their computation on High Performance Computing resources. In this pa…
The use of Convolutional Neural Networks for signal-background classification in Particle Physics experiments
Venkitesh Ayyar, Wahid Bhimji, Lisa Gerhardt +2
The success of Convolutional Neural Networks (CNNs) in image classification has prompted efforts to study their use for classifying image data obtained in Particle Physics experime…
Radiative contribution to the composite-Higgs potential in a two-representation lattice model
Venkitesh Ayyar, Maarten Golterman, Daniel C. Hackett +4
Working in a two-representation lattice gauge theory that is close to a composite Higgs model, we calculate the low-energy constant CLR which controls the contribution of the elect…
Partial compositeness and baryon matrix elements on the lattice
Venkitesh Ayyar, Thomas DeGrand, Daniel C. Hackett +4
Partial compositeness is a mechanism for the generation of fermion masses which replaces a direct Higgs coupling to the fermions by a linear mixing with heavy composite partners. W…
Finite-temperature phase structure of SU(4) gauge theory with multiple fermion representations
Venkitesh Ayyar, Thomas DeGrand, Daniel C. Hackett +4
We investigate the phase structure of SU(4) gauge theory with the gauge field simultaneously coupled to two flavors of fermion in the fundamental representation and two flavors of…
Automated lattice data generation
Venkitesh Ayyar, Daniel C. Hackett, William I. Jay +1
The process of generating ensembles of gauge configurations (and measuring various observables over them) can be tedious and error-prone when done "by hand". In practice, most of t…
Baryon spectrum of SU(4) composite Higgs theory with two distinct fermion representations
Venkitesh Ayyar, Thomas DeGrand, Daniel C. Hackett +4
We use lattice simulations to compute the baryon spectrum of SU(4) lattice gauge theory coupled to dynamical fermions in the fundamental and two-index antisymmetric (sextet) repres…
Benchmark results in the 2D lattice Thirring model with a chemical potential
Venkitesh Ayyar, Shailesh Chandrasekharan, Jarno Rantaharju
We study the two dimensional lattice Thirring model in the presence of a fermion chemical po- tential. Our model is asymptotically free, contains massive fermions that mimic a bary…
Confinement study of an SU(4) gauge theory with fermions in multiple representations
Venkitesh Ayyar, Daniel Hackett, William Jay +1
We discuss the phase diagnostics used in our finite-temperature study of an SU(4) gauge theory with dynamical fermions in both the fundamental and two-index antisymmetric represent…
Spectroscopy of SU(4) composite Higgs theory with two distinct fermion representations
Venkitesh Ayyar, Thomas DeGrand, Maarten Golterman +5
We have simulated the SU(4) lattice gauge theory coupled to dynamical fermions in the fundamental and two-index antisymmetric (sextet) representations simultaneously. Such theories…
Chiral Transition of SU(4) Gauge Theory with Fermions in Multiple Representations
Venkitesh Ayyar, Thomas DeGrand, Daniel C. Hackett +4
We report preliminary results on the finite temperature behavior of SU(4) gauge theory with dynamical quarks in both the fundamental and two-index antisymmetric representations. Th…
Generating a non-perturbative mass gap using Feynman diagrams in an asymptotically free theory
Venkitesh Ayyar, Shailesh Chandrasekharan
Using the example of a two dimensional four-fermion lattice field theory we demonstrate that Feynman diagrams can generate a mass gap when massless fermions interact via a marginal…
Search for a continuum limit of the PMS phase
Venkitesh Ayyar
Previous studies of a simple four-fermion model with staggered fermions in 3D have shown the existence of an exotic quantum critical point, where one may be able to define a contin…
Fermion masses through four-fermion condensates
Venkitesh Ayyar, Shailesh Chandrasekharan
Fermion masses can be generated through four-fermion condensates when symmetries prevent fermion bilinear condensates from forming. This less explored mechanism of fermion mass gen…
Exotic Quantum Critical Points with Staggered Fermions
Venkitesh Ayyar
We study two flavors of massless staggered fermions interacting via an on-site four-fermion inter- action and argue that the model contains an exotic quantum critical point separat…
Origin of fermion masses without spontaneous symmetry breaking
Venkitesh Ayyar, Shailesh Chandrasekharan
Using a simple three dimensional lattice four-fermion model we argue that massless fermions can become massive due to interactions without the need for any spontaneous symmetry bre…
Fermion mass generation without a condensate
Venkitesh Ayyar
We study a lattice field theory model containing two flavors of massless staggered fermions with an onsite four-fermion interaction. The symmetry of the model forbids non-zero ferm…