Nonlinear energy dissipation and transfers in coarsening systems
During coarsening, small structures disappear, leaving behind only large ones. Here we study the spectral energy transfers in Model A, where the order parameter ϕ evolves via nonconserved dynamics. We show that the nonlinear interactions dissipate fluctuations and facilitate energy transfers among the Fourier modes so that only ϕ(k=0), where k is the wave number, survives at the end and approaches the asymptotic value +1 or -1. We contrast the coarsening evolution for the initial conditions with 〈ϕ(x,t=0)〉=0 and with uniformly positive or negative ϕ(x,t=0).
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:107 |
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| Enthalten in: |
Physical review. E - 107(2023), 3-1 vom: 26. März, Seite 034207 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Verma, Mahendra K [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 19.04.2023 Date Revised 19.04.2023 published: Print Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1103/PhysRevE.107.034207 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM35576895X |
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| 500 | |a published: Print | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a During coarsening, small structures disappear, leaving behind only large ones. Here we study the spectral energy transfers in Model A, where the order parameter ϕ evolves via nonconserved dynamics. We show that the nonlinear interactions dissipate fluctuations and facilitate energy transfers among the Fourier modes so that only ϕ(k=0), where k is the wave number, survives at the end and approaches the asymptotic value +1 or -1. We contrast the coarsening evolution for the initial conditions with 〈ϕ(x,t=0)〉=0 and with uniformly positive or negative ϕ(x,t=0) | ||
| 650 | 4 | |a Journal Article | |
| 700 | 1 | |a Agrawal, Ramgopal |e verfasserin |4 aut | |
| 700 | 1 | |a Yadav, Pradeep Kumar |e verfasserin |4 aut | |
| 700 | 1 | |a Puri, Sanjay |e verfasserin |4 aut | |
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