Heat capacity of simple liquids in light of hydrodynamics as U(1) gauge theory
We investigate the heat capacity of simple liquids through a theoretical approach based on a quasiparticle description. By interpreting the microscopic dynamics of particles in liquids in terms of quasiparticles, we suggest a simplified understanding of the number of degrees of freedom in liquids. A...
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| Published in | Physical review. E Vol. 100; no. 1-1; p. 012103 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
United States
01.07.2019
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| Online Access | Get more information |
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| Summary: | We investigate the heat capacity of simple liquids through a theoretical approach based on a quasiparticle description. By interpreting the microscopic dynamics of particles in liquids in terms of quasiparticles, we suggest a simplified understanding of the number of degrees of freedom in liquids. A equivalence between hydrodynamics and U(1) gauge theory, which is proposed in the present paper, develops the quasiparticle description to construct a new Lagrangian which correctly reproduces the number of modes at the melting points and at the critical points. The heat capacity evaluated from this Lagrangian naturally interpolates between these two points, and agrees with the phonon theory of liquids [Sci. Rep. 2, 421 (2012)2045-232210.1038/srep00421]. |
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| ISSN: | 2470-0053 |
| DOI: | 10.1103/PhysRevE.100.012103 |