Variational calculations of resonant states in 4He☆
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Precise determination of lattice phase shifts and mixing angles
2016, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy PhysicsCitation Excerpt :One promising approach is to place the particles in a harmonic oscillator potential and extract phase shifts from the energy eigenvalues [25,26]. Another prominent example is the method used in Refs. [5,27], whereby a “spherical wall” is imposed on the relative separation between the two scattering particles. Phase shifts are then determined using the constraint that the wave function vanishes at the wall boundary.
Proton-proton fusion in lattice effective field theory
2015, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy PhysicsCitation Excerpt :Here we calculate the non-relativistic phase shift in the presence of the long range Coulomb force using a hard spherical wall boundary condition. This method was used in Refs. [14,40] to calculate two-body phase shift due to the short-ranged strong interaction. The spherical wall method was found to be better suited than Lüscher's method for problems involving coupled channels in Refs. [14] in lattice calculation.
No-core shell model in an effective-field-theory framework
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2023, Physical Review LettersVariational Monte Carlo calculations of n+ H 3 scattering
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Supported by NSF grant PHY81-21399 and US DOE contract W-31-109-ENG-38.
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Present address: Courant Institute for Mathematical Sciences, New York University, 251 Mercer Street, New York, NY 10012, USA.