Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Giacomo Gradenigo"'
Publikováno v:
Physical Review Research, Vol 2, Iss 2, p 023399 (2020)
We present here a unifying perspective for the lack of equipartition in nonlinear ordered systems and the low-temperature phase-space fragmentation in disordered systems. We demonstrate that they are just two manifestation of the same underlying phen
Externí odkaz:
https://doaj.org/article/e217c7f3768e47358e2a1b63fa25aec5
Autor:
Giacomo Gradenigo, Eric Bertin
Publikováno v:
Entropy, Vol 19, Iss 10, p 517 (2017)
Broadly distributed random variables with a power-law distribution f ( m ) ∼ m - ( 1 + α ) are known to generate condensation effects. This means that, when the exponent α lies in a certain interval, the largest variable in a sum of N (independen
Externí odkaz:
https://doaj.org/article/6831d4a485c44367b58169152d05bd83
Publikováno v:
SciPost Physics, Vol 14, Iss 6, p 144 (2023)
By means of enhanced Monte Carlo numerical simulations parallelized on GPUs we study the critical properties of the spin-glass-like model for the mode-locked glassy random laser, a $4$-spin model with complex spins with a global spherical constraint
Externí odkaz:
https://doaj.org/article/58da3084b8854238b16173e9bcfbeb9e
Autor:
Giacomo Gradenigo, Roberto Livi
Publikováno v:
Foundations of physics (Dordr., Online) 51 (2021): 66-1–66-12. doi:10.1007/s10701-021-00470-9
info:cnr-pdr/source/autori:Gradenigo G.; Livi R./titolo:Symplectic Quantization I: Dynamics of Quantum Fluctuations in a Relativistic Field Theory/doi:10.1007%2Fs10701-021-00470-9/rivista:Foundations of physics (Dordr., Online)/anno:2021/pagina_da:66-1/pagina_a:66-12/intervallo_pagine:66-1–66-12/volume:51
info:cnr-pdr/source/autori:Gradenigo G.; Livi R./titolo:Symplectic Quantization I: Dynamics of Quantum Fluctuations in a Relativistic Field Theory/doi:10.1007%2Fs10701-021-00470-9/rivista:Foundations of physics (Dordr., Online)/anno:2021/pagina_da:66-1/pagina_a:66-12/intervallo_pagine:66-1–66-12/volume:51
We propose here a new symplectic quantization scheme, where quantum fluctuations of a scalar field theory stem from two main assumptions: relativistic invariance and equiprobability of the field configurations with identical value of the action. In t
Publikováno v:
European Physical Journal E: Soft matter and biological physics
European Physical Journal E: Soft matter and biological physics, EDP Sciences: EPJ, 2021, 44 (3), ⟨10.1140/epje/s10189-021-00046-5⟩
The European physical journal. E, Soft matter (Online) 44 (2021). doi:10.1140/epje/s10189-021-00046-5
info:cnr-pdr/source/autori:Gradenigo G.; Iubini S.; Livi R.; Majumdar S.N./titolo:Condensation transition and ensemble inequivalence in the discrete nonlinear Schrödinger equation/doi:10.1140%2Fepje%2Fs10189-021-00046-5/rivista:The European physical journal. E, Soft matter (Online)/anno:2021/pagina_da:/pagina_a:/intervallo_pagine:/volume:44
European Physical Journal E: Soft matter and biological physics, EDP Sciences: EPJ, 2021, 44 (3), ⟨10.1140/epje/s10189-021-00046-5⟩
The European physical journal. E, Soft matter (Online) 44 (2021). doi:10.1140/epje/s10189-021-00046-5
info:cnr-pdr/source/autori:Gradenigo G.; Iubini S.; Livi R.; Majumdar S.N./titolo:Condensation transition and ensemble inequivalence in the discrete nonlinear Schrödinger equation/doi:10.1140%2Fepje%2Fs10189-021-00046-5/rivista:The European physical journal. E, Soft matter (Online)/anno:2021/pagina_da:/pagina_a:/intervallo_pagine:/volume:44
The thermodynamics of the discrete nonlinear Schr\"odinger equation in the vicinity of infinite temperature is explicitly solved in the microcanonical ensemble by means of large-deviation techniques. A first-order phase transition between a thermaliz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a83fa8d8cb2dd1e6d270b00bb5f1b912
https://hal.archives-ouvertes.fr/hal-03388432
https://hal.archives-ouvertes.fr/hal-03388432
Autor:
Giacomo Gradenigo
The symplectic quantization scheme proposed for matter scalar fields in the companion paper "Symplectic quantization I" is generalized here to the case of space-time quantum fluctuations. Symplectic quantization considers an explicit dependence of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ecb8599d7c52d54eb13f7b35873a57dd
http://arxiv.org/abs/2101.01795
http://arxiv.org/abs/2101.01795
Autor:
Giacomo Gradenigo, Matteo Paoluzzi
As shown by early studies on mean-field models of the glass transition, the geometrical features of the energy landscape provide fundamental information on the dynamical transition at the Mode-Coupling temperature $T_d$. We show that active particles
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ff173944cd9b4090e47a156b4f96d62
Publikováno v:
Journal of statistical mechanics 2021 (2021). doi:10.1088/1742-5468/abda26
info:cnr-pdr/source/autori:Gradenigo G.; Iubini S.; Livi R.; Majumdar S.N./titolo:Localization transition in the discrete nonlinear Schrödinger equation: Ensembles inequivalence and negative temperatures/doi:10.1088%2F1742-5468%2Fabda26/rivista:Journal of statistical mechanics/anno:2021/pagina_da:/pagina_a:/intervallo_pagine:/volume:2021
Journal of Statistical Mechanics: Theory and Experiment
Journal of Statistical Mechanics: Theory and Experiment, IOP Publishing, 2021
info:cnr-pdr/source/autori:Gradenigo G.; Iubini S.; Livi R.; Majumdar S.N./titolo:Localization transition in the discrete nonlinear Schrödinger equation: Ensembles inequivalence and negative temperatures/doi:10.1088%2F1742-5468%2Fabda26/rivista:Journal of statistical mechanics/anno:2021/pagina_da:/pagina_a:/intervallo_pagine:/volume:2021
Journal of Statistical Mechanics: Theory and Experiment
Journal of Statistical Mechanics: Theory and Experiment, IOP Publishing, 2021
We present a detailed account of a first-order localization transition in the Discrete Nonlinear Schr\"odinger Equation, where the localized phase is associated to the high energy region in parameter space. We show that, due to ensemble inequivalence
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d3a8788e202332b91360444a861f6ea
http://www.cnr.it/prodotto/i/452776
http://www.cnr.it/prodotto/i/452776
Publikováno v:
The European physical journal. E, Soft matter. 44(3)
The thermodynamics of the discrete nonlinear Schrödinger equation in the vicinity of infinite temperature is explicitly solved in the microcanonical ensemble by means of large-deviation techniques. A first-order phase transition between a thermalize
Publikováno v:
Physical review letters
123 (2019): 038002-1–038002-5. doi:10.1103/PhysRevLett.123.038002
info:cnr-pdr/source/autori:Plati, A.; Baldassarri, A.; Gnoli, A.; Gradenigo, G.; Puglisi, A./titolo:Dynamical Collective Memory in Fluidized Granular Materials/doi:10.1103%2FPhysRevLett.123.038002/rivista:Physical review letters (Print)/anno:2019/pagina_da:038002-1/pagina_a:038002-5/intervallo_pagine:038002-1–038002-5/volume:123
123 (2019): 038002-1–038002-5. doi:10.1103/PhysRevLett.123.038002
info:cnr-pdr/source/autori:Plati, A.; Baldassarri, A.; Gnoli, A.; Gradenigo, G.; Puglisi, A./titolo:Dynamical Collective Memory in Fluidized Granular Materials/doi:10.1103%2FPhysRevLett.123.038002/rivista:Physical review letters (Print)/anno:2019/pagina_da:038002-1/pagina_a:038002-5/intervallo_pagine:038002-1–038002-5/volume:123
Recent experiments with rotational diffusion of a probe in a vibrated granular media revealed a rich scenario, ranging from the dilute gas to the dense liquid with cage effects and an unexpected superdiffusive behavior at large times. Here we setup a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8956b0299c7bd469578963695cb7bd8d
http://arxiv.org/abs/1907.02389
http://arxiv.org/abs/1907.02389