Combined Feed
https://feeds.library.caltech.edu/people/van-Kolck-U/combined.rss
A Caltech Library Repository Feedhttp://www.rssboard.org/rss-specificationpython-feedgenenTue, 28 Nov 2023 19:22:20 +0000Nuclear matter on a lattice
https://resolver.caltech.edu/CaltechAUTHORS:MULprc00
Authors: MÃ¼ller, H.-M.; Koonin, S. E.; Seki, R.; van Kolck, U.
Year: 2000
DOI: 10.1103/PhysRevC.61.044320
We investigate nuclear matter on a cubic lattice. An exact thermal formalism is applied to nucleons with a Hamiltonian that accommodates on-site and next-neighbor parts of the central, spin-, and isospin-exchange interactions. We describe the nuclear matter Monte Carlo methods which contain elements from shell model Monte Carlo methods and from numerical simulations of the Hubbard model. We show that energy and basic saturation properties of nuclear matter can be reproduced. Evidence of a first-order phase transition from an uncorrelated Fermi gas to a clustered system is observed by computing mechanical and thermodynamical quantities such as compressibility, heat capacity, entropy, and grand potential. We compare symmetry energy and first sound velocities with literature and find reasonable agreement.https://authors.library.caltech.edu/records/8kspa-km373Effective field theory of nucleon-nucleon scattering on large discrete lattices
https://resolver.caltech.edu/CaltechAUTHORS:SEKprc06
Authors: Seki, Ryoichi; van Kolck, U.
Year: 2006
DOI: 10.1103/PhysRevC.73.044006
Nuclear effective field theory is applied to the effective-range expansion of S-wave nucleon-nucleon scattering on a discrete lattice. Lattice regularization is demonstrated to yield the effective-range expansion in the same way as in the usual continuous open space. The relation between the effective-range parameters and the potential parameters is presented in the limit of a large lattice.https://authors.library.caltech.edu/records/xxgex-4ed85Electric dipole moments of nucleons, nuclei, and atoms: The Standard Model and beyond
https://resolver.caltech.edu/CaltechAUTHORS:20130809-084130584
Authors: Engel, Jonathan; Ramsey-Musolf, Michael J.; van Kolck, U.
Year: 2013
DOI: 10.1016/j.ppnp.2013.03.003
Searches for the permanent electric dipole moments (EDMs) of molecules, atoms, nucleons and nuclei provide powerful probes of CP violation both within the Standard Model and beyond the Standard Model (BSM). The interpretation of experimental EDM limits requires careful delineation of physics at a wide range of scales, from the long-range atomic and molecular scales to the short-distance dynamics of physics at or beyond the Fermi scale. In this review, we provide a framework for disentangling contributions from physics at these disparate scales, building out from the set of dimension four and six effective operators that embody CP violation at the Fermi scale. We survey computations of hadronic and nuclear matrix elements associated with Fermi-scale CP violation in systems of experimental interest and quantify the present level of theoretical uncertainty in these calculations. Using representative BSM scenarios of current interest, we discuss ways in which the interplay of physics at various scales can generate EDMs at a potentially observable level.https://authors.library.caltech.edu/records/5hr94-4ct04