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Nuclear Theory·nucl-th

Wednesday·March 29, 2023

3 papers—1 primary·2 cross-listed

All3Primary1Cross-lists2
  1. 01

    Wormhole Model for Neon-20

    Nicholas S. Manton · Maciej Dunajski

    A quantum mechanical model for the Neon-20 nucleus is developed that allows for the splitting of a bipyramidal structure of five alpha-partices into an alpha-particle and an Oxygen-16 nucleus. The geometry of the configuration space is assumed to be a 3-dimensional spatial wormhole, and on the wormhole background there is an attractive short-range potential. This leads to a radial Schrödinger equation of the Heun form, which simplifies for threshold bound states to an associated Legendre equation that has explicit solutions. The energies of the true bound states for all spin/parities are numerically calculated, and match those of the well-established , , and certain higher rotational bands of Neon-20.

    nucl-thhep-thmath-phmath.MPNPA(2023)·2 citations
  2. 02

    Randomized measurement protocols for lattice gauge theories

    Jacob Bringewatt🇺🇸 · Jonathan Kunjummen🇺🇸 · Niklas Mueller🇺🇸

    Randomized measurement protocols, including classical shadows, entanglement tomography, and randomized benchmarking are powerful techniques to estimate observables, perform state tomography, or extract the entanglement properties of quantum states. While unraveling the intricate structure of quantum states is generally difficult and resource-intensive, quantum systems in nature are often tightly constrained by symmetries. This can be leveraged by the symmetry-conscious randomized measurement schemes we propose, yielding clear advantages over symmetry-blind randomization such as reducing measurement costs, enabling symmetry-based error mitigation in experiments, allowing differentiated measurement of (lattice) gauge theory entanglement structure, and, potentially, the verification of topologically ordered states in existing and near-term experiments. Crucially, unlike symmetry-blind randomized measurement protocols, these latter tasks can be performed without relearning symmetries via full reconstruction of the density matrix.

    ↳ quant-phcond-mat.stat-mechhep-latnucl-thQuantum(2024)·23 citations
  3. 03

    Diffractive scattering at next-to-leading order in the dipole picture

    Heikki Mäntysaari🇫🇮

    We discuss recent developments towards next-to-leading order (NLO) accuracy in the dipole picture. We review recent NLO results for exclusive vector meson production and diffractive structure functions, and discuss how it is becoming possible to describe both inclusive and exclusive DIS data simultaneously within the Color Glass Condensate framework at NLO accuracy. These developments will make it possible to probe the gluon saturation phenomena in detail especially when nuclear-DIS data from the EIC become available.

    ↳ hep-phnucl-thActa Phys.Polon.Supp.(2023)·0 citations

Affiliations

first authorsco-authorsvia INSPIRE