2020/08/31 by Kostya Trachenko, K. Trachenko
Engineering · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Dissipation #Energy (signal processing) #Materials science #Mechanics #Physics #Quantum, superfluid, helium dynamics #Thermodynamics #Thermoelastic and Magnetoelastic Phenomena #cond-mat.dis-nn #cond-mat.stat-mech #hep-th
paper · pdf · doi:10.1088/2399-6528/ac03a7
published as J. Phys. Commun. 5, 065002 (2021)
arxiv created 2021/03/12 · openalex publication_date 2021/05/20 · arxiv updated 2021/06/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Abstract The effect of anharmonicity (coupling) in the field theory generally results in dissipation of plane waves. It has been appreciated that anharmonicity and ensuing dissipation of plane waves can be accompanied by the emergence of the gapped momentum state. Here, we show that the same effect can lead to a gapped energy state and a dispersion relation where the frequency (energy) gap emerges explicitly. We discuss several notable properties of gapped energy and momentum states and connections between them.