{"id":"https://openalex.org/keywords/second-sound","display_name":"second sound","description":"A wave-like mode of heat transport in superfluids, arising from coupled oscillations of temperature and fluid density.","display_name_alternatives":[],"ids":{"openalex":"https://openalex.org/keywords/second-sound","wikidata":"https://www.wikidata.org/wiki/Q233699"},"primary_topic":{"id":"https://openalex.org/T11965","display_name":"Quantum, superfluid, helium dynamics","score":0.4615,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11965","display_name":"Quantum, superfluid, helium dynamics","score":0.4615,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11565","display_name":"Thermoelastic and Magnetoelastic Phenomena","score":0.1373,"subfield":{"id":"https://openalex.org/subfields/2211","display_name":"Mechanics of Materials"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"works_count":2324,"cited_by_count":44717,"works_api_url":"https://api.openalex.org/works?filter=keywords.id:keywords/second-sound","updated_date":"2026-10-19T04:06:21","created_date":"2022-04-12T19:38:12"}