Zobrazeno 1 - 10
of 166
pro vyhledávání: '"Sibani, Paolo"'
Optimization and expansion are two modes of staged evolution of complex systems where macroscopic observables change at a decreasing, respectively increasing, rate. A prime example of evolutionary expansion, Gross Domestic Product (GDP) time series g
Externí odkaz:
http://arxiv.org/abs/2203.17087
Publikováno v:
Physica A 587 (2022) 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
Externí odkaz:
http://arxiv.org/abs/2101.01237
Publikováno v:
Eur. Phys. J. B (2021) 94 :37
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 transitions fr
Externí odkaz:
http://arxiv.org/abs/2008.12684
Autor:
Sibani, Paolo, Kirketerp, Jacob Møller
Publikováno v:
Phys. Rev. E 102, 042131 (2020)
Thermoremanent magnetization data for the 3D Edwards-Anderson spin glass are generated using the Waiting Time Method as simulational tool and interpreted using Record Dynamics. We verify that clusters of contiguous spins are overturned by quakes, non
Externí odkaz:
http://arxiv.org/abs/2006.11214
Autor:
Sibani, Paolo, Rasmussen, Steen
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:
http://arxiv.org/abs/2003.11502
Autor:
Sibani, Paolo, Svaneborg, Carsten
Publikováno v:
Phys. Rev. E 99, 042607 (2019)
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
Externí odkaz:
http://arxiv.org/abs/1901.07379
Publikováno v:
Phys. Rev. E 98, 020602 (2018)
Aging is a ubiquitous relaxation dynamic in disordered materials. It ensues after a rapid quench from an equilibrium "fluid" state into a non-equilibrium, history-dependent jammed state. We propose a physically motivated description that contrasts sh
Externí odkaz:
http://arxiv.org/abs/1803.06580
Autor:
Sibani, Paolo, Boettcher, Stefan
Publikováno v:
Phys. Rev. B 98, 054202 (2018)
Isothermal simulational data for the 3D Edwards-Anderson spin glass are collected at several temperatures below $T_{\rm c}$ and, in analogy with a recent model of dense colloidal suspensions,interpreted in terms of clusters of contiguous spins overtu
Externí odkaz:
http://arxiv.org/abs/1802.08845
Publikováno v:
In Physica A: Statistical Mechanics and its Applications 1 February 2022 587
Autor:
Arthur, Rudy, Sibani, Paolo
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
Externí odkaz:
http://arxiv.org/abs/1608.04568