Zobrazeno 1 - 10
of 350
pro vyhledávání: '"Orlandini, Enzo"'
Spontaneous formation of knots in long polymers at equilibrium is inevitable but becomes rare in sufficiently short chains. Here, we show that knotting and knot complexity increase by orders of magnitude in diblock polymers with a fraction $p$ of sel
Externí odkaz:
http://arxiv.org/abs/2407.07191
Autor:
Sposini, Vittoria, Nampoothiri, Sankaran, Chechkin, Aleksei, Orlandini, Enzo, Seno, Flavio, Baldovin, Fulvio
Publikováno v:
Phys. Rev. Lett. 132, 117101 (2024)
Redundancy in biology may be explained by the need to optimize extreme searching processes, where one or few among many particles are requested to reach the target like in human fertilization. We show that non-Gaussian rare fluctuations in Brownian d
Externí odkaz:
http://arxiv.org/abs/2403.10143
Autor:
Sposini, Vittoria, Nampoothiri, Sankaran, Chechkin, Aleksei, Orlandini, Enzo, Seno, Flavio, Baldovin, Fulvio
Publikováno v:
Phys. Rev. E 109, 034120 (2024)
Diffusing diffusivity models, polymers in the grand canonical ensemble and polydisperse, and continuous-time random walks all exhibit stages of non-Gaussian diffusion. Is non-Gaussian targeting more efficient than Gaussian? We address this question,
Externí odkaz:
http://arxiv.org/abs/2403.10138
Autor:
Head, Louise C., Negro, Giuseppe, Carenza, Livio N., Keogh, Ryan R., Gonnella, Giuseppe, Morozov, Alexander, Orlandini, Enzo, Shendruk, Tyler N., Tiribocchi, Adriano, Marenduzzo, Davide
Quasiparticles are low-energy excitations with important roles in condensed matter physics. An intriguing example is provided by Majorana fermions, quasiparticles which are identical to their antiparticles. Despite being implicated in neutrino oscill
Externí odkaz:
http://arxiv.org/abs/2402.16149
Autor:
Bonato, Andrea, Corbett, Dom, Kitaev, Sergey, Marenduzzo, Davide, Morozov, Alexander, Orlandini, Enzo
The 3D folding of a mammalian gene can be studied by a polymer model, where the chromatin fibre is represented by a semiflexible polymer which interacts with multivalent proteins, representing complexes of DNA-binding transcription factors and RNA po
Externí odkaz:
http://arxiv.org/abs/2312.12159
Autor:
Bonato, Andrea, Corbett, Dom, Kitaev, Sergey, Marenduzzo, Davide, Morozov, Alexander, Orlandini, Enzo
Polymer physics models suggest that chromatin spontaneously folds into loop networks with transcription units (TUs), such as enhancers and promoters, as anchors. Here we use combinatoric arguments to enumerate the emergent chromatin loop networks, bo
Externí odkaz:
http://arxiv.org/abs/2312.12154
Publikováno v:
J. Chem. Theory Comput. 19, 6011-6022 (2023)
Explainable and interpretable unsupervised machine learning helps understand the underlying structure of data. We introduce an ensemble analysis of machine learning models to consolidate their interpretation. Its application shows that restricted Bol
Externí odkaz:
http://arxiv.org/abs/2303.15228
Publikováno v:
Macromolecules 56, 2899 (2023)
Simulated configurations of flexible knotted rings confined inside a spherical cavity are fed into long-short term memory neural networks (LSTM NNs) designed to distinguish knot types. The results show that they perform well in knot recognition even
Externí odkaz:
http://arxiv.org/abs/2212.11822
Autor:
Negro, Giuseppe, Carenza, Livio Nicola, Gonnella, Giuseppe, Marenduzzo, Davide, Orlandini, Enzo
We study the phase behaviour of cholesteric liquid crystal shells with different geometries. We compare the cases of tangential and no anchoring at the surface, focussing on the former case, which leads to a competition between the intrinsic tendency
Externí odkaz:
http://arxiv.org/abs/2210.04877
Publikováno v:
J. Phys. A: Math. Theor. 55 354003 (2022)
Three-dimensional Monte Carlo simulations provide a striking confirmation to a recent theoretical prediction: the Brownian non-Gaussian diffusion of critical self-avoiding walks. Although the mean square displacement of the polymer center of mass gro
Externí odkaz:
http://arxiv.org/abs/2209.09771