Viscous Properties of a Degenerate One-Dimensional Fermi Gas
We study the viscous properties of a system of weakly interacting spin-1/2 fermions in one dimension. Accounting for the effect of interactions on the quasiparticle energy spectrum, we obtain the bulk viscosity of this system at low temperatures. Our result is valid for frequencies that are small co...
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| Veröffentlicht in: | Physical review letters 2020-08, Vol.125 (7), p.1-076601, Article 076601 |
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| container_title | Physical review letters |
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| creator | DeGottardi, Wade Matveev, K. A. |
| description | We study the viscous properties of a system of weakly interacting spin-1/2 fermions in one dimension. Accounting for the effect of interactions on the quasiparticle energy spectrum, we obtain the bulk viscosity of this system at low temperatures. Our result is valid for frequencies that are small compared with the rate of fermion backscattering. For frequencies larger than this exponentially small rate, the excitations of the system become decoupled from the center of mass motion, and the fluid is described by two-fluid hydrodynamics. We calculate the three transport coefficients required to describe viscous dissipation in this regime. |
| doi_str_mv | 10.1103/PhysRevLett.125.076601 |
| format | Article |
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A.</creator><creatorcontrib>DeGottardi, Wade ; Matveev, K. A. ; Argonne National Laboratory (ANL), Argonne, IL (United States)</creatorcontrib><description>We study the viscous properties of a system of weakly interacting spin-1/2 fermions in one dimension. Accounting for the effect of interactions on the quasiparticle energy spectrum, we obtain the bulk viscosity of this system at low temperatures. Our result is valid for frequencies that are small compared with the rate of fermion backscattering. For frequencies larger than this exponentially small rate, the excitations of the system become decoupled from the center of mass motion, and the fluid is described by two-fluid hydrodynamics. 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We calculate the three transport coefficients required to describe viscous dissipation in this regime.</description><subject>Backscattering</subject><subject>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</subject><subject>Elementary excitations</subject><subject>Energy spectra</subject><subject>Fermi gases</subject><subject>Fermions</subject><subject>Fluid dynamics</subject><subject>Fluid flow</subject><subject>Hydrodynamics</subject><subject>Low temperature</subject><subject>Transport properties</subject><issn>0031-9007</issn><issn>1079-7114</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNpdkEFLAzEQhYMoWKt_QRa9eNk6s7tJNuBFWluFQouo15Ddztot7aYmqdB_b7QexMMwl4_Hex9jlwgDRMhv58u9f6bPKYUwwIwPQAoBeMR6CFKlErE4Zj2AHFMFIE_ZmfcrAMBMlD1299b62u58Mnd2Sy605BPbJCYZ0Tt15EygZNZROmo31PnWdmadjMlt2mRi_Dk7acza08Xv77PX8cPL8DGdziZPw_tpWhegQmqw4cVCFlXOm1LFyhXPcwWLTFK8SipTUyV5ozIQRjZCKLVoeJkhcZktuMj77OqQa31ota_bQPWytl1HddAouChjYJ_dHKCtsx878kFv4jRar01HcaDOirwUClGqiF7_Q1d25-K0H0oBRuw7UByo2lnvHTV669qNcXuNoL_N6z_mdTSvD-bzL8Ondzw</recordid><startdate>20200814</startdate><enddate>20200814</enddate><creator>DeGottardi, Wade</creator><creator>Matveev, K. 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| ispartof | Physical review letters, 2020-08, Vol.125 (7), p.1-076601, Article 076601 |
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| language | eng |
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| source | American Physical Society Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Backscattering CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY Elementary excitations Energy spectra Fermi gases Fermions Fluid dynamics Fluid flow Hydrodynamics Low temperature Transport properties |
| title | Viscous Properties of a Degenerate One-Dimensional Fermi Gas |
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