Strong coupling from non-equilibrium Monte Carlo simulations

Autor: Olmo Francesconi, Marco Panero, David Preti

Publikováno v: Journal of High Energy Physics, Vol 2020, Iss 7, Pp 1-42 (2020)

Abstract We compute the running coupling of non-Abelian gauge theories in the Schrödinger-functional scheme, by means of non-equilibrium Monte Carlo simulations on the lattice.

Externí odkaz: https://doaj.org/article/520803adcd014326b7a0e39b7b474d35

Efficient computations of continuous action densities of states for lattice models

Autor: Biagio Lucini, Olmo Francesconi, Markus Holzmann, David Lancaster, Antonio Rago

Publikováno v: 32nd IUPAP Conference on Computational Physics
32nd IUPAP Conference on Computational Physics, Aug 2021, Online, United Kingdom
Lucini, B, Francesconi, O, Holzmann, M, Lancaster, D & Rago, A 2022, ' Efficient computations of continuous action densities of states for lattice models ', Journal of Physics: Conference Series, vol. 2207, no. 1, 012052 . https://doi.org/10.1088/1742-6596/2207/1/012052

The Logarithmic Linear Relaxation (LLR) algorithm is an efficient method for computing densities of states for systems with a continuous spectrum. A key feature of this method is exponential error reduction, which allows us to evaluate the density of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61cbc35b8282fa542d885503dbf94cf0
https://hal.archives-ouvertes.fr/hal-03433043

Density of State Method for Complex Action Systems

Autor: Olmo Francesconi, Biagio Lucini, Antonio Rago, Markus Holzmann

Publikováno v: Acta Phys.Polon.Supp.
11th International Winter Workshop "Excited QCD" 2019
11th International Winter Workshop "Excited QCD" 2019, Jan 2019, Schladming, Austria. pp.121-126, ⟨10.5506/APhysPolBSupp.13.121⟩

International audience; While importance sampling Monte Carlo algorithms have proved to be a crucial tool for numerical studies in modern physics, they fail when we consider complex action systems. The density of states approach provides a way to sim

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::39f5f1832b6eb7485baafb3f1a2c3701
https://cronfa.swan.ac.uk/Record/cronfa21397/Download/21397__16609__64b502131f6548d4b7a5a1a5206aff68.pdf

Computing general observables in lattice models with complex actions

Autor: Antonio Rago, Markus Holzmann, Olmo Francesconi, Biagio Lucini, Jarno Rantaharju

Publikováno v: 37th International Symposium on Lattice Field Theory
37th International Symposium on Lattice Field Theory, Jun 2019, Wuhan, China
Proceedings of 37th International Symposium on Lattice Field Theory — PoS(LATTICE2019)
PoS
37th International Symposium on Lattice Field Theory, Jun 2019, Wuhan, China. pp.200, ⟨10.22323/1.363.0200⟩

The study of QFTs at finite density is hindered by the presence of the so-called sign problem. The action definition of such systems is, in fact, complex-valued making standard importance sampling Monte Carlo methods ineffective. In this work, we sha

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f33f1de4046fb172d72be79159a38967
https://hal.archives-ouvertes.fr/hal-02416934