Matthew J. Davis
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View article: Energetic and Structural Properties of Two-Dimensional Trapped Mesoscopic Fermi Gases
Energetic and Structural Properties of Two-Dimensional Trapped Mesoscopic Fermi Gases Open
We theoretically investigate equal-mass spin-balanced two-component Fermi gases in which pairs of atoms with opposite spins interact via a short-range isotropic model potential. We probe the distinction between two-dimensional and quasi-tw…
View article: Global variational quantum circuits for arbitrary symmetric state preparation
Global variational quantum circuits for arbitrary symmetric state preparation Open
Quantum states that are symmetric under particle exchange play a crucial role in fields such as quantum metrology and quantum error correction. We use a variational circuit composed of global one-axis twisting and global rotations to effic…
View article: Dynamics of polar-core spin vortices in inhomogeneous spin-1 Bose-Einstein condensates
Dynamics of polar-core spin vortices in inhomogeneous spin-1 Bose-Einstein condensates Open
In the easy-plane phase, a ferromagnetic spin-1 Bose-Einstein condensate is magnetized in a plane transverse to the applied Zeeman field. This phase supports polar-core spin vortices (PCVs), which consist of phase windings of transverse ma…
View article: When does a Fermi puddle become a Fermi sea? Emergence of pairing in two-dimensional trapped mesoscopic Fermi gases
When does a Fermi puddle become a Fermi sea? Emergence of pairing in two-dimensional trapped mesoscopic Fermi gases Open
Pairing lies at the heart of superfluidity in fermionic systems. Motivated by recent experiments in mesoscopic Fermi gases, we study up to six fermionic atoms with equal masses and equal populations in two different spin states, confined i…
View article: A novel HLA Class II presentation prediction algorithm deciphers immunogenic CD4 epitopes specific to KRAS G12C
A novel HLA Class II presentation prediction algorithm deciphers immunogenic CD4 epitopes specific to KRAS G12C Open
Accurate prediction of peptide presentation by HLA molecules is important for generation of effective individualized cancer vaccines and immunotherapies. While presentation prediction algorithms for HLA class I have been successfully appli…
View article: Comprehensive Longitudinal ctDNA Monitoring in Metastatic Cancer Patients Treated with an Individualized Neoantigen-directed Vaccine
Comprehensive Longitudinal ctDNA Monitoring in Metastatic Cancer Patients Treated with an Individualized Neoantigen-directed Vaccine Open
Purpose Circulating-tumor DNA (ctDNA) is an emerging, minimally invasive diagnostic and prognostic biomarker for patients receiving a variety of cancer therapies. Comprehensive and robust longitudinal monitoring of ctDNA can provide an und…
View article: Extracting work from coherence in a two-mode Bose–Einstein condensate
Extracting work from coherence in a two-mode Bose–Einstein condensate Open
We show how work can be extracted from number-state coherence in a two-mode Bose–Einstein condensate. With careful tuning of parameters, a sequence of thermodynamically reversible steps transforms a Glauber coherent state into a thermal st…
View article: Quantum thermal machine regimes in the transverse-field Ising model
Quantum thermal machine regimes in the transverse-field Ising model Open
We identify and interpret the possible quantum thermal machine regimes with a transverse-field Ising model as the working substance. In general, understanding the emergence of such regimes in a many-body quantum system is challenging due t…
View article: Mediodorsal thalamus of alcohol-dependent mice shows genetic and physiological adaptations and alcohol-biased calcium signaling
Mediodorsal thalamus of alcohol-dependent mice shows genetic and physiological adaptations and alcohol-biased calcium signaling Open
Alcohol Use Disorder (AUD) is a significant health concern characterized by cognitive dysfunction and an inability to control alcohol intake leading to severe social and health consequences. It is crucial to uncover neuroadaptations and ce…
View article: Macroscopic self-trapping in the dynamical tunneling of a Bose-Einstein condensate
Macroscopic self-trapping in the dynamical tunneling of a Bose-Einstein condensate Open
A Bose-Einstein condensate in a modulated, one-dimensional, anharmonic potential can exhibit dynamical tunneling between islands of regular motion in phase space. With increasingly repulsive atomic interactions, dynamical tunneling is pred…
View article: Extracting work from coherence in a two-mode Bose-Einstein condensate
Extracting work from coherence in a two-mode Bose-Einstein condensate Open
We show how work can be extracted from number-state coherence in a two-mode Bose-Einstein condensate. With careful tuning of parameters, a sequence of thermodynamically reversible steps transforms a Glauber coherent state into a thermal st…
View article: Dynamics of Polar-Core Spin Vortices in Inhomogeneous Spin-1 Bose-Einstein Condensates
Dynamics of Polar-Core Spin Vortices in Inhomogeneous Spin-1 Bose-Einstein Condensates Open
In the easy-plane phase, a ferromagnetic spin-1 Bose-Einstein condensate is magnetized in a plane transverse to the applied Zeeman field. This phase supports polar-core spin vortices (PCVs), which consist of phase windings of transverse ma…
View article: Melting of a vortex matter Wigner crystal
Melting of a vortex matter Wigner crystal Open
The two-dimensional One-Component Plasma (OCP) is a foundational model of the statistical mechanics of interacting particles, describing phenomena common to astrophysics, turbulence, and the Fractional Quantum Hall Effect (FQHE). Despite a…
View article: A role for ultraviolet radiation in multiple sclerosis
A role for ultraviolet radiation in multiple sclerosis Open
View article: Addition of Im Epinephrine to Standard of Care by Paramedics to Decrease Time-to-First Epinephrine Dose in Paediatric Out-of-Hospital Cardiac Arrest – a Simulation Trial
Addition of Im Epinephrine to Standard of Care by Paramedics to Decrease Time-to-First Epinephrine Dose in Paediatric Out-of-Hospital Cardiac Arrest – a Simulation Trial Open
View article: Global Variational Quantum Circuits for Arbitrary Symmetric State Preparation
Global Variational Quantum Circuits for Arbitrary Symmetric State Preparation Open
Quantum states that are symmetric under particle exchange play a crucial role in fields such as quantum metrology and quantum error correction. We use a variational circuit composed of global one-axis twisting and global rotations to effic…
View article: Bistability and nonequilibrium condensation in a driven-dissipative Josephson array: A c-field model
Bistability and nonequilibrium condensation in a driven-dissipative Josephson array: A c-field model Open
Developing theoretical models for nonequilibrium quantum systems poses significant challenges. Here we develop and study a multimode model of a driven-dissipative Josephson junction chain of atomic Bose-Einstein condensates, as realised in…
View article: Nonequilibrium Transport in a Superfluid Josephson Junction Chain: Is There Negative Differential Conductivity?
Nonequilibrium Transport in a Superfluid Josephson Junction Chain: Is There Negative Differential Conductivity? Open
We consider the far-from-equilibrium quantum transport dynamics in a 1D Josephson junction chain of multi-mode Bose-Einstein condensates. We develop a theoretical model to examine the experiment of R. Labouvie et al. [Phys. Rev. Lett. 115,…
View article: Triggering multiple sclerosis at conception and early gestation: The variation in ultraviolet radiation is as important as its intensity
Triggering multiple sclerosis at conception and early gestation: The variation in ultraviolet radiation is as important as its intensity Open
This paper offers a new concept in MS research.
View article: Report on 2102.02949v3
Report on 2102.02949v3 Open
Developing theoretical models for nonequilibrium quantum systems poses significant challenges.Here we develop and study a multimode model of a driven-dissipative Josephson junction chain of atomic Bose-Einstein condensates, as realised in …
View article: Report on 2212.11617v1
Report on 2212.11617v1 Open
We demonstrate the use of a ring-shaped Bose-Einstein condensate as a rotation sensor by measuring the interference between two counter-propagating phonon modes imprinted azimuthally around the ring.We observe rapid decay of the excitation…
View article: Many-body enhancement in a spin-chain quantum heat engine
Many-body enhancement in a spin-chain quantum heat engine Open
We show that ferromagnetic interactions can enhance the adiabatic performance of a quantum spin chain engine at low temperatures. The enhancement in work output is particular pronounced, increasing exponentially with interaction strength. …
View article: Report on 2212.11617v1
Report on 2212.11617v1 Open
We demonstrate the use of a ring-shaped Bose-Einstein condensate as a rotation sensor by measuring the interference between two counter-propagating phonon modes imprinted azimuthally around the ring.We observe rapid decay of the excitation…
View article: Correction: Provision of immobilization or ice by paramedics in Southwestern Ontario
Correction: Provision of immobilization or ice by paramedics in Southwestern Ontario Open
View article: Dynamics of thermalization of two tunnel-coupled one-dimensional quasicondensates
Dynamics of thermalization of two tunnel-coupled one-dimensional quasicondensates Open
We study the non-equilibrium dynamics of two tunnel-coupled one-dimensional\nquasicondensates following a quench of the coupling strength from zero to a\nfixed finite value. More specifically, starting from two independent\nquasicondensate…
View article: The effect of ultraviolet radiation on the incidence and severity of major mental illness using birth month, birth year, and sunspot data
The effect of ultraviolet radiation on the incidence and severity of major mental illness using birth month, birth year, and sunspot data Open
View article: Turbulent Relaxation to Equilibrium in a Two-Dimensional Quantum Vortex Gas
Turbulent Relaxation to Equilibrium in a Two-Dimensional Quantum Vortex Gas Open
We experimentally study the emergence of microcanonical equilibrium states in the turbulent relaxation dynamics of a two-dimensional chiral vortex gas. Same-sign vortices are injected into a quasi-two-dimensional disk-shaped atomic Bose-Ei…
View article: Bistability and nonequilibrium condensation in a driven-dissipative Josephson array: a c-field model
Bistability and nonequilibrium condensation in a driven-dissipative Josephson array: a c-field model Open
Developing theoretical models for nonequilibrium quantum systems poses significant challenges. Here we develop and study a multimode model of a driven-dissipative Josephson junction chain of atomic Bose-Einstein condensates, as realised in…
View article: Thermalization of a quantum Newton's cradle in a one-dimensional quasicondensate
Thermalization of a quantum Newton's cradle in a one-dimensional quasicondensate Open
We study the nonequilibrium dynamics of the quantum Newton's cradle in a\none-dimensional (1D) Bose gas in the weakly-interacting quasicondensate regime.\nThis is the opposite regime to the original quantum Newton's cradle experiment\nof K…
View article: Emergence of off-axis equilibria in a quantum vortex gas.
Emergence of off-axis equilibria in a quantum vortex gas. Open
We experimentally study the emergence of high-energy equilibrium states in a chiral vortex gas of like-circulation vortices realized within a disk-shaped atomic Bose-Einstein condensate. In contrast to the familiar triangular Abrikosov lat…