Publications (9)
Learning Trivializing Flows in a theory from coarser lattices
David Albandea, Luigi Del Debbio, Pilar Hernández +3
The so-called trivializing flows were proposed to speed up Hybrid Monte Carlo simulations, where the Wilson flow was used as an approximation of a trivializing map, a transformatio…
Chiral and isospin breaking in the two-flavor Schwinger Model
David Albandea, Pilar Hernández
The Schwinger model with two massive fermions is a nontrivial theory for which no analytical solution is known. The strong coupling limit of the theory allows for different semicla…
Strong CP problem in the quantum rotor
David Albandea, Guilherme Catumba, Alberto Ramos
Recent studies have claimed that the strong problem does not occur in QCD, proposing a new order of limits in volume and topological sectors when studying observables on the l…
Learning trivializing flows
David Albandea, Luigi Del Debbio, Pilar Hernández +3
The recent introduction of machine learning techniques, especially normalizing flows, for the sampling of lattice gauge theories has shed some hope on improving the sampling effici…
Topological sampling through windings
David Albandea, Pilar Hernández, Alberto Ramos +1
We propose a modification of the Hybrid Monte Carlo (HMC) algorithm that overcomes the topological freezing of a two-dimensional gauge theory with and without fermion conten…
Learning Trivializing Flows
David Albandea, Luigi Del Debbio, Pilar Hernández +3
The recent introduction of Machine Learning techniques, especially Normalizing Flows, for the sampling of lattice gauge theories has shed some hope on improving the sampling effici…
Lattice techniques to investigate the strong problem: lessons from a toy model
David Albandea, Guilherme Catumba, Alberto Ramos
Recent studies have claimed that the strong problem does not occur in QCD, proposing a new order of limits in volume and topological sectors when studying observables on the l…
Improved topological sampling for lattice gauge theories
David Albandea, Pilar Hernández, Alberto Ramos +1
Standard sampling algorithms for lattice QCD suffer from topology freezing (or critical slowing down) when approaching the continuum limit, thus leading to poor sampling of the dis…
A first study of strong isospin breaking effects in lattice QCD using truncated polynomials
David Albandea, Simon Kuberski, Fernando P. Panadero
Computing derivatives of observables with respect to parameters of the theory is a powerful tool in lattice QCD, as it allows the study of physical effects not directly accessible…