112 citations · 1.1k across the 53 of their papers we have counts for
10 papers · 2 filters
Three-particle scattering amplitudes from lattice QCD
Fernando Romero-López
Lattice QCD already offers the possibility of extracting three-hadron scattering quantities from first principles. In the last few years, significant progress has been achieved in…
Scattering from generalised lattice theory
Marco Garofalo, Fernando Romero-López, Akaki Rusetsky +1
We investigate numerically different techniques to extract scattering amplitudes from the Euclidean Lattice ϕ4 theory with two fields, having different masses. We present an explor…
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…
Implementing the three-particle quantization condition for and related systems
Tyler D. Blanton, Fernando Romero-López, Stephen R. Sharpe
Recently, the formalism needed to relate the finite-volume spectrum of systems of nondegenerate spinless particles has been derived. In this work we discuss a range of issues that…
scattering at Large
Jorge Baeza-Ballesteros, Pilar Hernández, Fernando Romero-López
We study the Large scaling of pion-pion scattering amplitudes for degenerate quark flavors. We focus on the standard isospin-2 channel and the adjoint-a…
Testing a new method for scattering in finite volume in the theory
Marco Garofalo, Fernando Romero-López, Akaki Rusetsky +1
We test an alternative proposal by Bruno and Hansen [1] to extract the scattering length from lattice simulations in a finite volume. For this, we use a scalar theory with tw…
Singlet channel scattering in a Composite Higgs model on the lattice
Vincent Drach, Patrick Fritzsch, Antonio Rago +1
We present the first calculation of the scattering amplitude in the singlet channel beyond QCD. The calculation is performed in gauge theory with fundamental Dirac…
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…
Interactions of two and three mesons including higher partial waves from lattice QCD
Tyler D. Blanton, Andrew D. Hanlon, Ben Hörz +3
We study two- and three-meson systems composed either of pions or kaons at maximal isospin using Monte Carlo simulations of lattice QCD. Utilizing the stochastic LapH method, we ar…
Decay amplitudes to three hadrons from finite-volume matrix elements
Maxwell T. Hansen, Fernando Romero-López, Stephen R. Sharpe
We derive relations between finite-volume matrix elements and infinite-volume decay amplitudes, for processes with three spinless, degenerate and either identical or non-identical…