Zobrazeno 1 - 10
of 190
pro vyhledávání: '"Angheluta, Luiza"'
We present a mesoscale field theory unifying the modeling of growth, elasticity, and dislocations in quasicrystals. The theory is based on the amplitudes entering their density-wave representation. We introduce a free energy functional for complex am
Externí odkaz:
http://arxiv.org/abs/2407.17091
Within the context of epithelial monolayers, T1 transitions, also known as cell-intercalations, are topological rearrangements of cells that contribute to fluidity of the epithelial monolayers. We use a multi-phase field model to show that the ensemb
Externí odkaz:
http://arxiv.org/abs/2403.20100
Cellular rearrangements, as primary sources of tissue fluidization, facilitate topological transitions during tissue morphogenesis. We study the role of intrinsic cell properties such as cell polarity and cell-cell adhesion in shaping epithelial tiss
Externí odkaz:
http://arxiv.org/abs/2403.05276
Polar active matter of self-propelled particles sustain spontaneous flows through the full-integer topological defects. We study theoretically the effect of both polar and dipolar active forces on the flow profile around $\pm 1$ defects and their int
Externí odkaz:
http://arxiv.org/abs/2303.07063
Topological defects and smooth excitations determine the properties of systems showing collective order. We introduce a generic non-singular field theory that comprehensively describes defects and excitations in systems with $O(n)$ broken rotational
Externí odkaz:
http://arxiv.org/abs/2302.03035
Large-scale tissue deformation which is fundamental to tissue development hinges on local cellular rearrangements, such as T1 transitions. In the realm of the multi-phase field model, we analyse the statistical and dynamical properties of T1 transiti
Externí odkaz:
http://arxiv.org/abs/2301.11758
Autor:
Rønning, Jonas, Angheluta, Luiza
We apply the Halperin-Mazenco formalism within the Gross-Pitaevskii theory to characterise the kinematics and nucleation of quantum vortices in a two-dimensional stirred Bose Einstein condensate. We introduce a smooth defect density field measuring t
Externí odkaz:
http://arxiv.org/abs/2210.14620
Autor:
Andersen, Benjamin H., Renaud, Julian, Rønning, Jonas, Angheluta, Luiza, Doostmohammadi, Amin
Coherent flows of self-propelled particles are characterized by vortices and jets that sustain chaotic flows, referred to as active turbulence. Here, we reveal a crossover between defect-free active turbulence and active turbulence laden with topolog
Externí odkaz:
http://arxiv.org/abs/2209.10916
We study the dynamics of topological defects in active nematic films with spatially-varying activity and consider two setups: i) a constant activity gradient, and ii) a sharp jump in activity. A constant gradient of extensile (contractile) activity e
Externí odkaz:
http://arxiv.org/abs/2209.00333
We use a first-passage time approach to study the statistics of the trapping times induced by persistent motion of active particles colliding with flat boundaries. The angular first-passage time distribution and mean first-passage time is calculated
Externí odkaz:
http://arxiv.org/abs/2208.00806