Strength of the Vortex-Pinning Interaction from Real-Time Dynamics

Abstract

We present an efficient and general method to compute vortex-pinning interactions - which arise in neutron stars, superconductors, and trapped cold atoms - at arbitrary separations using real-time dynamics. This method overcomes uncertainties associated with matter redistribution by the vortex position and the related choice of ensemble that plague the typical approach of comparing energy differences between stationary pinned and unpinned configurations: uncertainties that prevent agreement in the literature on the sign and magnitude of the vortex-nucleus interaction in the crust of neutron stars. We demonstrate and validate the method with Gross-Pitaevskii-like equations for the unitary Fermi gas, and demonstrate how the technique of adiabatic state preparation with time-dependent simulation can be used to calculate vortex-pinning interactions in fermionic systems such as the vortex-nucleus interaction in the crust of neutron stars.

5 pages, 2 figures

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Cited by in corpus (21)

• Superfluidity in nuclear systems and neutron stars
• Quantized Superfluid Vortex Rings in the Unitary Fermi Gas
• Superfluidity and Superconductivity in Neutron Stars
• Neutron Stars in the Laboratory
• Time-Dependent Density Functional Theory and the Real-Time Dynamics of Fermi Superfluids
• Vortex pinning and dynamics in the neutron star crust
• A Minimal Nuclear Energy Density Functional
• Glitch rises as a test for rapid superfluid coupling in neutron stars
• Global numerical simulations of the rise of vortex-mediated pulsar glitches in full general relativity
• Life Cycle of Superfluid Vortices and Quantum Turbulence in the Unitary Fermi Gas
• Time-Dependent Density Functional Theory for Fermionic Superfluids: from Cold Atomic Gases, to Nuclei and Neutron Stars Crust
• Magnus-Induced Dynamics of Driven Skyrmions on a Quasi-One-Dimensional Periodic Substrate
• Validating Simple Dynamical Simulations of the Unitary Fermi Gas
• Superfluid vortex-mediated mutual friction in non-homogeneous neutron star interiors
• Vortices and magnetic impurities
• Insights into the physics of neutron star interiors from pulsar glitches
• Effects of pairing gap and band gap on superfluid density in the inner crust of neutron stars
• Nuclear Energy Density Functionals: What do we really know?
• Microscopic calculation of the pinning energy of a vortex in the inner crust of a neutron star
• Time-dependent nuclear energy-density functional theory toolkit for neutron star crust: Dynamics of a nucleus in a neutron superfluid
• Self-dual $CP(2)$ vortex-like solitons in the presence of magnetic impurities