David Schaich
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View article: Hyperstealth dark matter and long-lived particles
Hyperstealth dark matter and long-lived particles Open
A new dark matter candidate is proposed that arises as the lightest baryon from a confining SU(N) gauge theory which equilibrates with the Standard Model only through electroweak interactions. Surprisingly, this candidate can be as light a…
View article: Finite-temperature phase diagram of the Berenstein-Maldacena-Nastase matrix model on the lattice
Finite-temperature phase diagram of the Berenstein-Maldacena-Nastase matrix model on the lattice Open
We investigate the thermal phase structure of the Berenstein-Maldacena-Nastase matrix model using nonperturbative lattice Monte Carlo calculations. Our main analyses span 3 orders of magnitude in the coupling, involving systems with sizes …
View article: Finite-temperature phase diagram of the Berenstein-Maldacena-Nastase matrix model on the lattice
Finite-temperature phase diagram of the Berenstein-Maldacena-Nastase matrix model on the lattice Open
We investigate the thermal phase structure of the Berenstein-Maldacena-Nastase matrix model using nonperturbative lattice Monte Carlo calculations. Our main analyses span 3 orders of magnitude in the coupling, involving systems with sizes …
View article: Maximally supersymmetric Yang--Mills in three dimensions
Maximally supersymmetric Yang--Mills in three dimensions Open
We present the latest results from our ongoing lattice field theory investigations of maximally supersymmetric Yang--Mills theory in three space-time dimensions, focusing on its non-perturbative phase diagram. Exploiting a lattice formulat…
View article: Hyper Stealth Dark Matter and Long-Lived Particles
Hyper Stealth Dark Matter and Long-Lived Particles Open
A new dark matter candidate is proposed that arises as the lightest baryon from a confining $SU(N)$ gauge theory which equilibrates with the Standard Model only through electroweak interactions. Surprisingly, this candidate can be as light…
View article: Towards quantum simulation of lower-dimensional supersymmetric lattice models
Towards quantum simulation of lower-dimensional supersymmetric lattice models Open
Supersymmetric models are grounded in the intriguing concept of a hypothetical symmetry that relates bosonic and fermionic particles. This symmetry has profound implications, offering valuable extensions to the Standard Model of particle p…
View article: Towards Quantum Simulation of Lower-Dimensional Supersymmetric Lattice Models
Towards Quantum Simulation of Lower-Dimensional Supersymmetric Lattice Models Open
Supersymmetric models are grounded in the intriguing concept of a hypothetical symmetry that relates bosonic and fermionic particles. This symmetry has profound implications, offering valuable extensions to the Standard Model of particle p…
View article: Towards quantum simulation of lower-dimensional supersymmetric lattice models
Towards quantum simulation of lower-dimensional supersymmetric lattice models Open
Supersymmetric models are grounded in the intriguing concept of a hypothetical symmetry that relates bosonic and fermionic particles. This symmetry has profound implications, offering valuable extensions to the Standard Model of particle p…
View article: Stealth dark matter spectrum using Laplacian Heaviside smearing and irreducible representations
Stealth dark matter spectrum using Laplacian Heaviside smearing and irreducible representations Open
We present nonperturbative lattice calculations in the quenched approximation of the low-lying meson and baryon spectrum of the SU(4) gauge theory with fundamental fermion constituents. This theory is one instance of stealth dark matter, a…
View article: Exploring lattice supersymmetry with variational quantum deflation
Exploring lattice supersymmetry with variational quantum deflation Open
Lattice studies of spontaneous supersymmetry breaking suffer from a sign\nproblem that in principle can be evaded through novel methods enabled by\nquantum computing. Focusing on lower-dimensional lattice systems with more\nmodest resource…
View article: Nonperturbative phase diagram of two-dimensional <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="script">N</mml:mi><mml:mo>=</mml:mo><mml:mo stretchy="false">(</mml:mo><mml:mn>2</mml:mn><mml:mo>,</mml:mo><mml:mtext> </mml:mtext><mml:mn>2</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:mrow></mml:math> super-Yang-Mills theory
Nonperturbative phase diagram of two-dimensional super-Yang-Mills theory Open
We consider two-dimensional N=(2,2) Yang-Mills theory with gauge group SU(N) in Euclidean signature compactified on a torus with thermal fermion boundary conditions imposed on one cycle. We perform nonperturbative lattice analyses of this …
View article: Light scalar meson and decay constant in SU(3) gauge theory with eight dynamical flavors
Light scalar meson and decay constant in SU(3) gauge theory with eight dynamical flavors Open
The SU(3) gauge theory with Nf=8 nearly massless Dirac fermions has long been of theoretical and phenomenological interest due to the near-conformality arising from its proximity to the conformal window. One particularly interesting featur…
View article: Stealth dark matter spectrum using LapH and Irreps
Stealth dark matter spectrum using LapH and Irreps Open
We present non-perturbative lattice calculations of the low-lying meson and baryon spectrum of the SU(4) gauge theory with fundamental fermion constituents. This theory is one instance of stealth dark matter, a class of strongly coupled th…
View article: Nonperturbative phase diagram of two-dimensional ${\cal N} = (2, 2)$ super-Yang--Mills
Nonperturbative phase diagram of two-dimensional ${\cal N} = (2, 2)$ super-Yang--Mills Open
We consider two-dimensional ${\cal N} = (2, 2)$ Yang--Mills theory with gauge group SU($N$) in Euclidean signature compactified on a torus with thermal fermion boundary conditions imposed on one cycle. We perform non-perturbative lattice a…
View article: Hidden conformal symmetry from the lattice
Hidden conformal symmetry from the lattice Open
We analyze newly expanded and refined data from lattice studies of an SU(3) gauge theory with eight Dirac fermions in the fundamental representation. We focus on the light composite states emerging from these studies, consisting of a set o…
View article: First-order bulk transitions in large-$N$ lattice Yang--Mills theories using the density of states
First-order bulk transitions in large-$N$ lattice Yang--Mills theories using the density of states Open
We use the Logarithmic Linear Relaxation (LLR) density of states algorithm to study the bulk phase transitions of pure-gauge SU($N$) lattice Yang--Mills theories with $4 \leq N \leq 8$. This approach avoids super-critical slowing down at s…
View article: Nonperturbative phase diagram of two-dimensional N=(2,2) super-Yang--Mills theory --- data release
Nonperturbative phase diagram of two-dimensional N=(2,2) super-Yang--Mills theory --- data release Open
<p>This HDF5 file collects data and analysis results for non-perturbative lattice field theory calculations investigating two-dimensional supersymmetric SU(N) Yang--Mills theory with four supercharges. See the README for furthe…
View article: Deconfinement Phase Transition in Bosonic BMN Model at General Coupling
Deconfinement Phase Transition in Bosonic BMN Model at General Coupling Open
We present our analysis of the deconfinement phase transition in the bosonic BMN matrix model. The model is investigated using a non-perturbative lattice framework. We used the Polyakov loop as the order parameter to monitor the phase tran…
View article: Light Scalar Meson and Decay Constant in SU(3) Gauge Theory with Eight Dynamical Flavors
Light Scalar Meson and Decay Constant in SU(3) Gauge Theory with Eight Dynamical Flavors Open
The SU(3) gauge theory with $N_f=8$ nearly massless Dirac fermions has long been of theoretical and phenomenological interest due to the near-conformality arising from its proximity to the conformal window. One particularly interesting fea…
View article: Dataset for "Light Scalar Meson and Decay Constant in SU(3) Gauge Theory with Eight Dynamical Flavors"
Dataset for "Light Scalar Meson and Decay Constant in SU(3) Gauge Theory with Eight Dynamical Flavors" Open
Decoding File Names: Consider the file name f8l24t48b48m00889_S0.csv. We will break down the meaning of the various pieces of the filename "f8" means 8 Dirac flavors. "l24t48" means 243×48 lattice. "b48" means beta=4.8, related to the in…
View article: Hidden Conformal Symmetry from the Lattice
Hidden Conformal Symmetry from the Lattice Open
We analyze newly expanded and refined data from lattice studies of an SU(3) gauge theory with eight Dirac fermions in the fundamental representation. We focus on the light composite states emerging from these studies, consisting of a set o…
View article: Lattice Studies of 3D Maximally Supersymmetric Yang--Mills
Lattice Studies of 3D Maximally Supersymmetric Yang--Mills Open
We present ongoing investigations of maximally supersymmetric Yang--Mills ($Q = 16$ SYM) theory in three space-time dimensions. At low temperatures and large $N$ this theory is related to black branes in higher-dimensional quantum gravity.…
View article: Exploring conformality in lattice N=4 supersymmetric Yang--Mills
Exploring conformality in lattice N=4 supersymmetric Yang--Mills Open
Maximally supersymmetric Yang--Mills theory (N=4 SYM) is conformal for any value of the coupling. Lattice regularization breaks conformality through the introduction of a non-zero lattice spacing and a finite lattice volume. This proceedin…
View article: Quantum Computing for the Wess–Zumino Model
Quantum Computing for the Wess–Zumino Model Open
Future quantum computers will enable novel sign-problem-free studies of dynamical phenomena in non-perturbative quantum field theories, including real-time evolution and spontaneous supersymmetry breaking. We are investigating applications…
View article: Lattice Studies of 3D Maximally Supersymmetric Yang–Mills
Lattice Studies of 3D Maximally Supersymmetric Yang–Mills Open
We present ongoing investigations of maximally supersymmetric Yang–-Mills ($Q = 16$ SYM) theory\nin three space-time dimensions. At low temperatures and large $N$ this theory is related to black branes in higher-dimensional\nquantum gravit…
View article: Advances in using density of states for large-N Yang–Mills
Advances in using density of states for large-N Yang–Mills Open
We present work in progress using the Logarithmic Linear Relaxation (LLR) density of states algorithm to analyse first-order phase transitions in pure-gauge SU($N$) Yang--Mills theories, focusing on $N = 4$ and 6. By using the LLR algorith…
View article: Quantum Computing for the Wess-Zumino Model
Quantum Computing for the Wess-Zumino Model Open
Future quantum computers will enable novel sign-problem-free studies of dynamical phenomena in non-perturbative quantum field theories, including real-time evolution and spontaneous supersymmetry breaking. We are investigating applications…
View article: Progress applying density of states for gravitational waves
Progress applying density of states for gravitational waves Open
Many models of composite dark matter feature a first-order confinement transition in the early Universe, which would produce a stochastic background of gravitational waves that will be searched for by future gravitational-wave observatorie…
View article: Lattice studies of supersymmetric gauge theories
Lattice studies of supersymmetric gauge theories Open
Supersymmetry plays prominent roles in the study of quantum field theory and in many proposals for potential new physics beyond the standard model. Lattice field theory provides a non-perturbative regularization suitable for strongly inter…
View article: Lattice studies of supersymmetric gauge theories
Lattice studies of supersymmetric gauge theories Open
Supersymmetry plays prominent roles in the study of quantum field theory and in many proposals for potential new physics beyond the standard model. Lattice field theory provides a non-perturbative regularization suitable for strongly inter…