Observation of a metallic superfluid in a numerical experiment

Abstract

We report the observation, in Monte Carlo simulations, of a novel type of quantum ordered state: {\it the metallic superfluid}. The metallic superfluid features ohmic resistance to counter-flows of protons and electrons, while featuring dissipationless co-flows of electrons and protons. One of the candidates for a physical realization of this remarkable state of matter is hydrogen or its isotopes under high compression. This adds another potential candidate to the presently known quantum dissipationless states, namely superconductors, superfluid liquids and vapours, and supersolids.

arXiv comment4 pages, 2 figures. Accepted for publication in Phys. Rev. Lett

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• First-order phase transition in easy-plane quantum antiferromagnets
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• Unconventional rotational responses of hadronic superfluids in a neutron star caused by strong entrainment and a ${\Sigma }^{-}$ hyperon gap
• Preemptive vortex-loop proliferation in multicomponent interacting Bose--Einstein condensates
• Phase structure and phase transitions in a three dimensional SU(2) superconductor
• Unusual states of vortex matter in mixtures of Bose--Einstein Condensates on rotating optical lattices
• Effects of intercomponent couplings on the appearance of time-reversal symmetry breaking fermion quadrupling state in two-component London models
• Effective model and Magnetic Properties of the Resistive Electron Quadrupling State
• Vortices and magnetic bags in Abelian models with extended scalar sectors and some of their applications
• First-order phase transition and tricritical point in multiband U(1) London superconductors
• Stability of vortex in a two-component superconductor
• Vortices and composite order in $\mathrm{SU}(N)$ theories coupled to Abelian gauge field
• Superconductivity from Doublon Condensation in the Ionic Hubbard Model
• Topological defects in mixtures of superconducting condensates with different charges
• Vortices with scalar condensates in two-component Ginzburg-Landau systems
• The phases of deuterium at extreme densities
• Current-loops, phase transitions, and the Higgs mechanism in Josephson-coupled multi-component superconductors
• Revisiting vestigial order in nematic superconductors: gauge-field mechanisms and model constraints
• Phase transitions and composite order in $\mathrm{U}(1{)}^N$ lattice London models