499 citations · 10.2k across the 260 of their papers we have counts for
14 papers · 2 filters
Simulation of an ensemble of twisted mass clover-improved fermions at physical quark masses
Jacob Finkenrath, Constantia Alexandrou, Simone Bacchio +7
We present a general strategy aimed at generating configurations with quarks at their physical mass using maximally twisted mass fermions to ensure automatic imp…
The pion vector form factor from Lattice QCD at the physical point
C. Alexandrou, S. Bacchio, P. Dimopoulos +9
We present an investigation of the electromagnetic pion form factor, , at small values of the four-momentum transfer ( GeV), based on the gauge c…
Higgs-Yukawa model on the lattice
David Y. -J. Chu, Karl Jansen, Bastian Knippschild +1
We present results from two projects on lattice calculations for the Higgs-Yukawa model. First we report progress on the search of first-order thermal phase transitions in the pres…
Computation of parton distributions from the quasi-PDF approach at the physical point
Constantia Alexandrou, Simone Bacchio, Krzysztof Cichy +6
We show the first results for parton distribution functions within the proton at the physical pion mass, employing the method of quasi-distributions. In particular, we present the…
Progress in computing parton distribution functions from the quasi-PDF approach
Constantia Alexandrou, Krzysztof Cichy, Martha Constantinou +5
We discuss the current developments by the European Twisted Mass Collaboration in extracting parton distribution functions from the quasi-PDF approach. We concentrate on the non-pe…
Topological susceptibility from twisted mass fermions using spectral projectors and the gradient flow
Constantia Alexandrou, Andreas Athenodorou, Krzysztof Cichy +5
We compare lattice QCD determinations of topological susceptibility using a gluonic definition from the gradient flow and a fermionic definition from the spectral projector method.…
Comparison of topological charge definitions in Lattice QCD
Constantia Alexandrou, Andreas Athenodorou, Krzysztof Cichy +5
In this paper, we show a comparison of different definitions of the topological charge on the lattice. We concentrate on one small-volume ensemble with 2 flavours of dynamical, max…
Nonperturbative renormalization of nonlocal quark bilinears for quasi-PDFs on the lattice using an auxiliary field
Jeremy Green, Karl Jansen, Fernanda Steffens
Quasi-PDFs provide a path toward an ab initio calculation of parton distribution functions (PDFs) using lattice QCD. One of the problems faced in calculations of quasi-PDFs is the…
Efficient Basis Formulation for (1+1)-Dimensional SU(2) Lattice Gauge Theory: Spectral calculations with matrix product states
Mari Carmen Bañuls, Krzysztof Cichy, J. Ignacio Cirac +2
We propose an explicit formulation of the physical subspace for a (1+1)-dimensional SU(2) lattice gauge theory, where the gauge degrees of freedom are integrated out. Our formulati…
Nucleon electromagnetic form factors using lattice simulations at the physical point
Constantia Alexandrou, Martha Constantinou, Kyriakos Hadjiyiannakou +4
We present results for the nucleon electromagnetic form factors using an ensemble of maximally twisted mass clover-improved fermions with pion mass of about 130 MeV. We use multipl…
A complete non-perturbative renormalization prescription for quasi-PDFs
Constantia Alexandrou, Krzysztof Cichy, Martha Constantinou +4
In this work we present, for the first time, the non-perturbative renormalization for the unpolarized, helicity and transversity quasi-PDFs, in an RI' scheme. The proposed prescrip…
Nucleon axial form factors using lattice QCD simulations with a physical value of the pion mass
Constantia Alexandrou, Martha Constantinou, Kyriakos Hadjiyiannakou +4
We present results on the nucleon axial and induced pseudo-scalar form factors using an ensemble of two degenerate twisted mass clover-improved fermions generated at the physical v…
Nucleon electromagnetic and axial form factors with N=2 twisted mass fermions at the physical point
Constantia Alexandrou, Martha Constantinou, Kyriakos Hadjiyiannakou +5
We present results for the nucleon electromagnetic and axial form factors using an N=2 twisted mass fermion ensemble with pion mass of about 131 MeV. We use multiple sink-sourc…
Parton Distributions from Lattice QCD with Momentum Smearing
Constantia Alexandrou, Krzysztof Cichy, Martha Constantinou +4
In this work we continue our effort to explore a recent proposal, which allows light-cone distributions to be extracted from purely spatial correlations, being thus accessible to l…