Dynamical Generation of Elementary Fermion Mass: First Lattice Evidence

Autor: G. C. Rossi, Stefano Capitani, Marco Garofalo, F. Pittler, Bartosz Kostrzewa, Carsten Urbach, Roberto Frezzotti, Petros Dimopoulos

Publikováno v: Physical Review Letters

Using lattice simulations we demonstrate from first principles the existence of a non-perturbative mechanism for elementary particle mass generation in models with gauge fields, fermions and scalars, if an exact invariance forbids power divergent fer

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa1c8ad838e77991288f9fe8df25627e
https://doi.org/10.1103/physrevlett.123.061802

Isovector axial form factors of the nucleon in two-flavor lattice QCD

Autor: Michele Della Morte, Thomas Rae, Stefano Capitani, Hartmut Wittig, Dalibor Djukanovic, Parikshit Junnarkar, Harvey B. Meyer, J. Hua, Benjamin Jäger, Georg von Hippel

Publikováno v: Stefano, C, Della Morte, M, Djukanovic, D, von Hippel, G, Hua, J, Jager, B, Junnarkar, Meyer, H, Rae, T & Wittig, H 2019, ' Isovector axial form factors of the nucleon in two-flavor lattice QCD ', International Journal of Modern Physics A (IJMPA), vol. 34, no. 2, 1950009 . https://doi.org/10.1142/S0217751X1950009X

We present a lattice calculation of the nucleon iso-vector axial and induced pseudoscalar form factors on the CLS ensembles using $N_{\rm f}=2$ dynamical flavours of non-perturbatively $\mathcal{O}(a)$-improved Wilson fermions and an $\mathcal{O}(a)$

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::084bafc99d713c089fee5541ad90314e
https://portal.findresearcher.sdu.dk/da/publications/ec26d936-898b-49dd-8db7-44203e8ca366

Testing a non-perturbative mechanism for elementary fermion mass generation: lattice setup

Autor: Bastian Knippschild, Ferenc Pittler, Giancarlo Rossi, Bartosz Kostrzewa, Petros Dimopoulos, Giulia Maria de Divitiis, Marco Garofalo, Carsten Urbach, Stefano Capitani, Roberto Frezzotti

Publikováno v: EPJ Web of Conferences, Vol 175, p 08009 (2018)

In this contribution we lay down a lattice setup that allows for the non-perturbative study of a field theoretical model where a SU(2) fermion doublet, subjected to non-Abelian gauge interactions, is also coupled to a complex scalar field doublet via

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2fdb4657b0d507e4e058cde87b9cb986
http://publikationen.ub.uni-frankfurt.de/files/49326/epjconf_lattice2018_08009.pdf

Testing a non-perturbative mechanism for elementary fermion mass generation: numerical results

Autor: Giulia Maria de Divitiis, Petros Dimopoulos, Carsten Urbach, Stefano Capitani, Ferenc Pittler, Bartosz Kostrzewa, Giancarlo Rossi, Roberto Frezzotti, Marco Garofalo, Bastian Knippschild

Publikováno v: EPJ Web of Conferences, Vol 175, p 08008 (2018)

Based on a recent proposal according to which elementary particle masses could be generated by a non-perturbative dynamical phenomenon, alternative to the Higgs mechanism, we carry out lattice simulations of a model where a non-abelian strongly inter

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f8f8eb786c86c60f294969c9032c547b
http://hdl.handle.net/2108/206000

Lattice perturbation theory

Autor: Stefano Capitani

Publikováno v: Physics Reports. 382:113-302

The consideration of quantum fields defined on a spacetime lattice provides computational techniques which are invaluable for studying gauge theories nonperturbatively from first principles. Perturbation theory is an essential aspect of computations

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f38b2e48b87cf290df57fe18db629aa
https://doi.org/10.1016/s0370-1573(03)00211-4