Christopher Körber
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View article: Di-nucleons do not form bound states at heavy pion mass
Di-nucleons do not form bound states at heavy pion mass Open
We perform a high-statistics lattice QCD calculation of the low-energy two-nucleon scattering amplitudes. In order to address discrepancies in the literature, the calculation is performed at a heavy pion mass in the limit that the light qu…
View article: Dark matter scattering off $$ ^{4}$$He in chiral effective field theory
Dark matter scattering off $$ ^{4}$$He in chiral effective field theory Open
We study dark matter scattering off $$ ^4$$ He and other light nuclei using chiral effective field theory. We consider scalar DM interactions and include both one- and two-nucleon scattering processes. The DM interactions and nuclear wa…
View article: FK /Fπ from Möbius domain-wall fermions solved on gradient-flowed HISQ ensembles
FK /Fπ from Möbius domain-wall fermions solved on gradient-flowed HISQ ensembles Open
We report the results of a lattice quantum chromodynamics calculation of FK/Fπ using Möbius domain-wall fermions computed on gradient-flowed Nf=2+1+1 highly improved staggered quark (HISQ) ensembles. The calculation is performed with five …
View article: Detailed analysis of excited-state systematics in a lattice QCD calculation of gA
Detailed analysis of excited-state systematics in a lattice QCD calculation of gA Open
Excited state contamination remains one of the most challenging sources of systematic uncertainty to control in lattice QCD calculations of nucleon matrix elements and form factors: early time separations are contaminated by excited states…
View article: Two-nucleon S -wave interactions at the SU(3) flavor-symmetric point with mud≈ msphys: A first lattice QCD calculation with the stochastic Laplacian Heaviside method
Two-nucleon S -wave interactions at the SU(3) flavor-symmetric point with mud≈ msphys: A first lattice QCD calculation with the stochastic Laplacian Heaviside method Open
We report on the first application of the stochastic Laplacian Heaviside method for computing multiparticle interactions with lattice QCD to the two-nucleon system. Like the Laplacian Heaviside method, this method allows for the constructi…
View article: Tactile Network Resource Allocation enabled by Quantum Annealing based on ILP Modeling
Tactile Network Resource Allocation enabled by Quantum Annealing based on ILP Modeling Open
Agile networks with fast adaptation and reconfiguration capabilities are required for on-demand provisioning of various network services. We propose a new methodical framework for short-time network optimization based on quantum computing …
View article: Nucleon Axial Form Factor from Domain Wall on HISQ
Nucleon Axial Form Factor from Domain Wall on HISQ Open
The Deep Underground Neutrino Experiment (DUNE) is an upcoming neutrino oscillation experiment that is poised to answer key questions about the nature of neutrinos. Lattice QCD has the ability to make significant impact upon DUNE, beginnin…
View article: Nucleon Axial Form Factor from Domain Wall on HISQ
Nucleon Axial Form Factor from Domain Wall on HISQ Open
The Deep Underground Neutrino Experiment (DUNE) is an upcoming neutrino oscillation experiment that is poised to answer key questions about the nature of neutrinos. Lattice QCD has the ability to make significant impact upon DUNE, beginnin…
View article: Renormalization of a Contact Interaction on a Lattice
Renormalization of a Contact Interaction on a Lattice Open
Contact interactions can be used to describe a system of particles at unitarity, contribute to the leading part of nuclear interactions and are numerically non-trivial because they require a proper regularization and renormalization scheme…
View article: Avoiding ergodicity problems in lattice discretizations of the Hubbard model
Avoiding ergodicity problems in lattice discretizations of the Hubbard model Open
The Hubbard model arises naturally when electron-electron interactions are\nadded to the tight-binding descriptions of many condensed matter systems. For\ninstance, the two-dimensional Hubbard model on the honeycomb lattice is central\nto …
View article: Avoiding Ergodicity Problems in Lattice Discretizations of the Hubbard Model - Data
Avoiding Ergodicity Problems in Lattice Discretizations of the Hubbard Model - Data Open
These are the datasets used to make the figures in "Avoiding Ergodicity Problems in Lattice Discretizations of the Hubbard Model". The data was generated using Isle v0.1. Install Isle in order to run the scripts proved with the data files.
View article: Avoiding Ergodicity Problems in Lattice Discretizations of the Hubbard Model - Data
Avoiding Ergodicity Problems in Lattice Discretizations of the Hubbard Model - Data Open
These are the datasets used to make the figures in "Avoiding Ergodicity Problems in Lattice Discretizations of the Hubbard Model". The data was generated using Isle v0.1. Install Isle in order to run the scripts proved with the data files.
View article: First-principle calculations of dark matter scattering off light nuclei
First-principle calculations of dark matter scattering off light nuclei Open
We study the scattering of Dark Matter particles off various light nuclei\nwithin the framework of chiral effective field theory. We focus on scalar\ninteractions and include one- and two-nucleon scattering processes whose form\nand streng…
View article: Nuclear Lattice Investigations of Fundamental Symmetries
Nuclear Lattice Investigations of Fundamental Symmetries Open
Fundamental symmetries (and their violations) play a significant role in active experimental searches of Beyond the Standard Model (BSM) signatures. An example of such phenomena is the neutron Electric Dipole Moment (EDM), a measurement of…
View article: Applying twisted boundary conditions for few-body nuclear systems
Applying twisted boundary conditions for few-body nuclear systems Open
We describe and implement twisted boundary conditions for the deuteron and triton systems within finite-volumes using the nuclear lattice EFT formalism. We investigate the finite-volume dependence of these systems with different twists ang…