253 citations · 3.4k across the 96 of their papers we have counts for
13 papers · 1 filter
Hubbard-Stratonovich-like Transformations for Few-Body Interactions
Christopher Körber, Evan Berkowitz, Thomas Luu
Through the development of many-body methodology and algorithms, it has become possible to describe quantum systems composed of a large number of particles with great accuracy. Ess…
Sampling General N-Body Interactions with Auxiliary Fields
Christopher Körber, Evan Berkowitz, Thomas Luu
We present a general auxiliary field transformation which generates effective interactions containing all possible N-body contact terms. The strength of the induced terms can analy…
Neutron-proton scattering at next-to-next-to-leading order in Nuclear Lattice Effective Field Theory
Jose Manuel Alarcón, Dechuan Du, Nico Klein +6
We present a systematic study of neutron-proton scattering in Nuclear Lattice Effective Field Theory (NLEFT), in terms of the computationally efficient radial Hamiltonian method. O…
Applying Twisted Boundary Conditions for Few-body Nuclear Systems
Christopher Körber, Thomas Luu
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-v…
Ab initio alpha-alpha scattering
Serdar Elhatisari, Dean Lee, Gautam Rupak +5
Processes involving alpha particles and alpha-like nuclei comprise a major part of stellar nucleosynthesis and hypothesized mechanisms for thermonuclear supernovae. In an effort to…
Nuclear Lattice Simulations using Symmetry-Sign Extrapolation
Timo A. Lähde, Thomas Luu, Dean Lee +4
Projection Monte Carlo calculations of lattice Chiral Effective Field Theory suffer from sign oscillations to a varying degree dependent on the number of protons and neutrons. Henc…
Quark mass variation constraints from Big Bang nucleosynthesis
Paulo F. Bedaque, Thomas Luu, Lucas Platter
We study the impact on the primordial abundances of light elements created by a variation of the quark masses at the time of Big Bang nucleosynthesis (BBN). In order to navigate th…
Nucleon-Nucleon Scattering in a Harmonic Potential
Thomas Luu, Martin Savage, Achim Schwenk +1
The discrete energy-eigenvalues of two nucleons interacting with a finite-range nuclear force and confined to a harmonic potential are used to numerically reconstruct the free-spac…
Electromagnetic excitation rates for nuclear isomers in a hot dense plasma
T. C. Luu, J. L. Friar, A. C. Hayes
In high neutron flux environments where isomers can be strongly populated by nucleonic reactions, isotope abundances from reaction network chains can be affected by the population…
Effective Interactions for the Three-Body Problem
T. C. Luu, S. Bogner, W. C. Haxton +1
The three-body energy-dependent effective interaction given by the Bloch-Horowitz (BH) equation is evaluated for various shell-model oscillator spaces. The results are applied to t…
Perturbative Effective Theory in an Oscillator Basis?
W. C. Haxton, T. Luu
The effective interaction/operator problem in nuclear physics is believed to be highly nonperturbative, requiring extended high-momentum spaces for accurate solution. We trace this…
The Canonical Nuclear Many-Body Problem as an Effective Theory
W. C. Haxton, T. Luu
Recently it was argued that it might be possible treat the conventional nuclear structure problem -- nonrelativistic point nucleons interacting through a static and rather singular…
Beyond the Shell Model: The Canonical Nuclear Many-Body Problem as an Effective Theory
W. C. Haxton, C. -L. Song
We describe a strategy for attacking the canonical nuclear structure problem ---bound-state properties of a system of point nucleons interacting via a two-body potential---which in…