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http://hdl.handle.net/2445/194064
Title: | Fluctuations in 2D fire-ant collectives |
Author: | Argelich Evangelio, Bernat |
Director/Tutor: | Fernández-Nieves, Alberto Planet Latorre, Ramon |
Keywords: | Fluctuacions (Física) Matèria activa Treballs de fi de grau Fluctuations (Physics) Active matter Bachelor's theses |
Issue Date: | Jan-2023 |
Abstract: | Active matter resides far from equilibrium since its constituents are constantly dissipating energy by converting ambient or internal energy into work. Previous studies showed that active matter exhibit giant number fluctuations(GNF). By studying fire-ant systems, we find that in the course of time, ants exhibit two distinctive phases: ’active’, where essentially all ants move, and ’inactive’, where a large fraction of ants are stationary. In both states, we find giant number fluctuations. However, the underlying origin for this result is different. In the ’active’ case, the results are genuinely the same resulting in GNF like in other active matter systems. In the ’inactive’ case, the GNF we see are due to the inhomogeneous nature of the system in this phase |
Note: | Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2022-2023, Tutors: Alberto Fernández-Nieves, Ramón Planet Latorre |
URI: | http://hdl.handle.net/2445/194064 |
Appears in Collections: | Treballs Finals de Grau (TFG) - Física |
Files in This Item:
File | Description | Size | Format | |
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ARGELICH EVANGELIO BERNAT_7074556.pdf | 3.18 MB | Adobe PDF | View/Open |
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