Zobrazeno 1 - 10
of 116
pro vyhledávání: '"Paolo Sibani"'
Publikováno v:
Entropy, Vol 19, Iss 5, p 192 (2017)
Applications of entropy principles to evolution and ecology are of tantamount importance given the central role spatiotemporal structuring plays in both evolution and ecological succession. We obtain here a qualitative interpretation of the role of e
Externí odkaz:
https://doaj.org/article/449b80d0b354487cb0c38f1dd4763dd1
Autor:
Paolo Sibani, Steen Rasmussen
Publikováno v:
The 2021 Conference on Artificial Life.
Publikováno v:
Sibani, P, Boettcher, S & Jensen, H J 2021, ' Record dynamics of evolving metastable systems : theory and applications ', European Physical Journal B. Condensed Matter and Complex Systems, vol. 94, no. 1, 37 . https://doi.org/10.1140/epjb/s10051-020-00039-x
Abstract Record Dynamics (RD) deals with complex systems evolving through a sequence of metastable stages. These are macroscopically distinguishable and appear stationary, except for the sudden and rapid changes, called quakes, which induce the trans
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae0356fcbfdfbdf1b4a4aa2bdcb5b26a
http://hdl.handle.net/10044/1/88303
http://hdl.handle.net/10044/1/88303
Autor:
Jacob Møller Kirketerp, Paolo Sibani
Publikováno v:
Sibani, P & Kirketerp, J M 2020, ' Record-dynamics description of spin-glass thermoremanent magnetization : A numerical and analytical study ', Physical Review E, vol. 102, no. 4, 042131 . https://doi.org/10.1103/PhysRevE.102.042131
Thermoremanent magnetization data for the three-dimensional Edwards-Anderson (EA) spin glass are generated using the waiting time method as a simulational tool and interpreted using record dynamics. We verify that clusters of contiguous spins are ove
Publikováno v:
Boettcher, S, Gago, P A & Sibani, P 2022, ' Extreme fluctuations driving the relaxation in glassy energy landscapes ', Physica A: Statistical Mechanics and its Applications, vol. 587, 126522 . https://doi.org/10.1016/j.physa.2021.126522
Cooperative events requiring anomalously large fluctuations are a defining characteristic for the onset of glassy relaxation across many materials. The importance of such intermittent events has been noted in systems as diverse as superconductors, me
Autor:
Steen Rasmussen, Paolo Sibani
Publikováno v:
Sibani, P & Rasmussen, S 2020, ' Human wealth evolution : trends and fluctuations ', Physica A: Statistical Mechanics and its Applications, vol. 558, 124985 . https://doi.org/10.1016/j.physa.2020.124985
Is a causal description of human wealth history conceivable? To investigate the matter we introduce a simple causal albeit strongly aggregated model, assuming that the observed wealth growth is mainly driven by human collaborative efforts whose inten
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df0cd176ce3df6d8e8fdfe3691b6ef7b
Autor:
Paolo Sibani, Rudy Arthur
Publikováno v:
Arthur, R & Sibani, P 2017, ' Decision Making on Fitness Landscapes ', Physica A: Statistical Mechanics and its Applications, vol. 471, pp. 696–704 . https://doi.org/10.1016/j.physa.2016.12.068
We discuss fitness landscapes and how they can be modified to account for co-evolution. We are interested in using the landscape as a way to model rational decision making in a toy economic system. We develop a model very similar to the Tangled Natur
Autor:
Paolo Sibani, Carsten Svaneborg
Publikováno v:
Sibani, P & Svaneborg, C 2019, ' Dynamics of dense hard sphere colloidal systems : A numerical analysis ', Physical Review E, vol. 99, no. 4, 042607 . https://doi.org/10.1103/PhysRevE.99.042607
The applicability to dense hard sphere colloidal suspensions of a general coarse-graining approach called Record Dynamics (RD) is tested by extensive molecular dynamics simulations. We reproduce known results as logarithmic diffusion and the logarith
Autor:
Paolo Sibani, Steen Rasmussen
Publikováno v:
Rasmussen, S & Sibani, P 2019, ' Two modes of evolution : optimization and expansion ', Artificial Life, vol. 25, no. 1, pp. 9-21 . https://doi.org/10.1162/artl_a_00277
We document and discuss two different modes of evolution across multiple systems, optimization and expansion. The former suffices in systems whose size and interactions do not change substantially over time, while the latter is a key property of open
Autor:
Paolo Sibani, Stefan Boettcher
Publikováno v:
Sibani, P & Boettcher, S 2018, ' Mesoscopic real-space structures in spin-glass aging : the Edwards-Anderson model ', Physical Review B, vol. 98, no. 5, 054202 . https://doi.org/10.1103/PhysRevB.98.054202
Isothermal simulational data for the three-dimensional Edwards-Anderson (E-A) spin glass are collected at several temperatures below ${T}_{\mathrm{c}}$ and, in analogy with a recent model of dense colloidal suspensions, interpreted in terms of cluste