6 papers
Lattice investigation of custodial two-Higgs-doublet model at weak quartic couplings
Guilherme Catumba, Atsuki Hiraguchi, Wei-Shu Hou +5
The gauged custodial two-Higgs-doublet model, which shares the same global-symmetry properties with the standard model, is studied non-perturbatively on the lattice. The…
A Julia Code for Lattice QCD on GPUs
Guilherme Catumba, Fernando P. Panadero, Carlos Pena +1
We present a new GPU-based open source package to perform Lattice simulations developed in Julia. The code currently supports generation of SU(2) and SU(3) (pure gauge) configurati…
Stochastic automatic differentiation and the Signal to Noise problem
Guilherme Catumba, Alberto Ramos
Lattice Field theory allows to extract properties of particles in strongly coupled quantum field theories by studying Euclidean vacuum expectation values. When estimated from numer…
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…
Progress in lattice simulations for two Higgs doublet models
Guilherme Catumba, Atsuki Hiraguchi, George W. -S Hou +5
The custodial Two-Higgs-Doublet-Model with SU(2) gauge fields is studied on the lattice. This model has the same global symmetry structure as the Standard Model but the additional…
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…