Out-of-equilibrium superfluids in Bjorken, Gubser and FLRW flows reach hydrodynamic attractors after an initial-condition-dependent attractor time, with a novel nonlinear constant-anisotropy regime in Gubser evolution.
Introduction to superfluidity -- Field-theoretical approach and applications
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abstract
In this pedagogical introduction, I discuss theoretical aspects of superfluidity and superconductivity, mostly using a field-theoretical formalism. While the emphasis is on general concepts and mechanisms behind superfluidity, I also discuss various applications in low-energy and high-energy physics. Besides some introductory and standard topics such as superfluid helium and superfluidity in a simple scalar field theory, the lecture notes also include more advanced chapters, for instance discussions of the covariant two-fluid formalism and Cooper pairing with mismatched Fermi surfaces.
verdicts
UNVERDICTED 3representative citing papers
Three homogeneous universes with distinct matter content obey the same thermodynamic equation for energy density, implying vanishing cosmological constant in vacuum.
Leading order chiral perturbation theory yields the minimal energy condition for vortex nucleation in the pion condensed phase, with vortices carrying quantized angular momentum and self-confining pions.
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Thermodynamics of homogeneous Universes: de Sitter, Bonnor-Melvin and static Einstein
Three homogeneous universes with distinct matter content obey the same thermodynamic equation for energy density, implying vanishing cosmological constant in vacuum.
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Minimal superfluid vortices in chiral perturbation theory
Leading order chiral perturbation theory yields the minimal energy condition for vortex nucleation in the pion condensed phase, with vortices carrying quantized angular momentum and self-confining pions.