A5079397182- Quantum Chromodynamics and Particle Interactions
- Quantum Computing Algorithms and Architecture
- Nuclear physics research studies
- Particle physics theoretical and experimental studies
- Quantum and electron transport phenomena
- Neutrino Physics Research
- Quantum Information and Cryptography
- Particle accelerators and beam dynamics
- Advanced NMR Techniques and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Neural Networks and Reservoir Computing
- Particle Accelerators and Free-Electron Lasers
- Parallel Computing and Optimization Techniques
- Physics of Superconductivity and Magnetism
- Superconducting Materials and Applications
- Quantum, superfluid, helium dynamics
- Atomic and Molecular Physics
- Atomic and Subatomic Physics Research
- Quantum and Classical Electrodynamics
- Big Data Technologies and Applications
- Data Mining Algorithms and Applications
- High-Energy Particle Collisions Research
- Research Data Management Practices
- Data Quality and Management
- Advanced Data Storage Technologies
Oak Ridge National Laboratory
2023-2024
Los Alamos National Laboratory
2019-2023
Quantum Science Center
2023
University of South Carolina
2018-2020
Old Dominion University
2011-2019
Michigan State University
2019
European Organization for Nuclear Research
2019
Thomas Jefferson National Accelerator Facility
2019
William & Mary
2019
Williams (United States)
2019
In recent years local chiral interactions have been derived and implemented in quantum Monte Carlo methods order to test what extent the effective field theory framework impacts our knowledge of few- many-body systems. this Letter, we present Green's function calculations light nuclei based on family two-body presented by group a previous paper conjunction with three-body fitted bound- scattering-state observables three-nucleon sector. These include Δ intermediate states their...
In astrophysical scenarios with large neutrino density, like supernovae and the early universe, presence of neutrino-neutrino interactions can give rise to collective flavor oscillations in out-of-equilibrium dynamics a cloud. The role quantum correlations these phenomena is not yet well understood, part due complications solving for real-time evolution strongly coupled many-body system. Future fault-tolerant computers hold promise overcome much limitations provide direct access correlated...
We explore the preparation of specific nuclear states on gate-based quantum hardware using variational algorithms. Large-scale classical diagonalizations shell model have reached sizes ${10}^{9}--{10}^{10}$ basis but are still severely limited by computational resources. Quantum computing can, in principle, solve such systems exactly with exponentially fewer resources than computing. Exact solutions for large require many qubits and gate depth, approaches can effectively limit required...
Ab initio calculations of the Gamow-Teller (GT) matrix elements in $\beta$ decays $^6$He and $^{10}$C electron captures $^7$Be are carried out using both variational Green's function Monte Carlo wave functions obtained from Argonne $v_{18}$ two-nucleon Illinois-7 three-nucleon interactions, axial many-body currents derived either meson-exchange phenomenology or chiral effective field theory. The agreement with experimental data is excellent for $^7$Be, while theory overestimates by $\sim...
The Gamow-Teller (GT) matrix element contributing to tritium $\beta$ decay is calculated with trinucleon wave functions obtained from hyperspherical-harmonics solutions of the Schr\"odinger equation chiral two- and three-nucleon interactions including $\Delta$ intermediate states that have recently been constructed in configuration space. Predictions up N3LO expansion axial current (with $\Delta$'s) overestimate empirical value by 1--4 \%. By exploiting relation between low-energy constant...
Two-nucleon axial charge and current operators are derived in chiral effective field theory up to one loop. The derivation is based on time-ordered perturbation accounts for cancellations between the contributions of irreducible diagrams owing nonstatic corrections from energy denominators reducible diagrams. Ultraviolet divergencies associated with loop isolated dimensional regularization. resulting finite conserved limit, while requires renormalization. A complete set contact terms...
We study two different methods to prepare excited states on a quantum computer, key initial step dynamics within linear response theory. The first method uses unitary evolution for short time $T=\mathcal{O}(\sqrt{1-F})$ approximate the action of an excitation operator $\hat{O}$ with fidelity $F$ and success probability $P\approx1-F$. second probabilistically applies using Linear Combination Unitaries (LCU) algorithm. benchmark these techniques emulated real devices, toy model thermal...
We evaluate the Fermi and Gamow-Teller (GT) matrix elements in tritium $\beta$-decay by including charge-changing weak current corrections up to one loop recently derived nuclear chiral effective field theory ($\chi$ EFT). The trinucleon wave functions are obtained from hyperspherical-harmonics solutions of Schrodinger equation with two- three-nucleon potentials corresponding either $\chi$ EFT (the N3LO/N2LO combination) or meson-exchange phenomenology AV18/UIX combination). find that...
In this work we develop a Lorentz-covariant version of the previously derived formalism for relating finite-volume matrix elements to $\mathbf{2}+\mathcal{J}\ensuremath{\rightarrow}\mathbf{2}$ transition amplitudes. We also give various details relevant implementation in realistic numerical lattice QCD calculation. Particular focus is given role single-particle form factors disentangling effects from triangle diagram that arise when $\mathcal{J}$ couples one two hadrons. This leads new...
The magnetic form factors of $^2$H, $^3$H, and $^3$He, deuteron photodisintegration cross sections at low energies, threshold electrodisintegration backward angles in a wide range momentum transfers, are calculated with the chiral two-nucleon (and three-nucleon) interactions including $\Delta$ intermediate states that have recently been constructed configuration space. $A\,$=$\,$3 wave functions obtained from hyperspherical-harmonics solutions Schr\"odinger equation. electromagnetic current...
The authors relate an amplitude in infinite volume Minkowski spacetime to a matrix element with two currents finite Euclidean spacetime. This relation opens wide class of new observables numerical lattice QCD computations, such as Compton scattering mesons and nucleons, double beta decays, radiative corrections single decays hadrons stable under the strong interactions.
Weak interactions between quarks induce a parity-violating (PV) component in the nucleon-nucleon potential. This work exploits chiral effective field theory at next-to-next-to-leading order to construct this parity-nonconserving component. The potential obtained is used investigate several PV observables, including neutron-spin rotations scattering of polarized neutrons off protons and deuterons, longitudinal asymmetries proton-proton elastic ${}^{3}$He($\stackrel{P\vec}{n}$,$p$)${}^{3}$H...
Searches for new physics can be conducted by brute force or, like the perihelion shift of Mercury, looking subtle but persistent discrepancies. This detailed paper carries out high-precision calculations $\ensuremath{\beta}$-decay spectrum ${}^{6}$He, and estimates experimental precision needed to reveal hints charged-current interactions beyond Standard Model and/or sterile neutrinos.
The evaluation of expectation values $Tr\left[\rho O\right]$ for some pure state $\rho$ and Hermitian operator $O$ is central importance in a variety quantum algorithms. Near optimal techniques developed the past require number measurements $N$ approaching Heisenberg limit $N=\mathcal{O}\left(1/\epsilon\right)$ as function target accuracy $\epsilon$. use Quantum Phase Estimation requires however long circuit depths $C=\mathcal{O}\left(1/\epsilon\right)$ making their implementation difficult...
In preparation for the 2023 NSAC Long Range Plan (LRP), members of Nuclear Science community gathered to discuss current state of, and plans further leveraging opportunities in, QIST in NP research at Quantum Information U.S. Physics Planning workshop, held Santa Fe, New Mexico on January 31 - February 1, 2023. The workshop included 45 in-person participants 53 remote attendees. outcome identified strategic requirements next 5-10 years advance quantum sensing simulations within NP, develop a...
Cross sections for inclusive neutrino scattering off deuteron induced by neutral and charge-changing weak currents are calculated from threshold up to 150 MeV energies in a chiral effective field theory including high orders the power counting. Contributions beyond leading order (LO) current found be small, increase cross obtained with LO transition operators couple of percent over whole energy range (0--150) MeV. The cutoff dependence is negligible, predicted within $\sim 2$\% of, albeit...
Description of quantum many-body dynamics is extremely challenging on classical computers, as it can involve many degrees freedom. On the other hand, time evolution states a natural application for which are designed to efficiently perform unitary transformations. In this paper we study algorithms response functions, relevant describing different reactions governed by linear response. We consider qubit-efficient mapping lattice, be performed using momentum-space basis states. analyze...
Numerical simulation is an important method for verifying the quantum circuits used to simulate low-energy nuclear states. However, real-world applications of computing theory often generate deep that place demanding memory and processing requirements on conventional methods. Here, we present advances in high-performance numerical simulations efficiently verify accuracy physics applications. Our approach employs several novel methods accelerating including 1- 2-qubit gate fusion techniques...
In this talk, we present a framework for studying structural information of resonances and bound states coupling to two-hadron scattering states. This makes use recently proposed finite volume formalism determine class observables that are experimentally inaccessible but can be accessed via lattice QCD. particular, shown finite-volume two-body matrix elements with one current insertion directly related amplitudes the external current. For systems or states, extract corresponding form factors...