# ZEU-NIC

 2018-02-1216:43 [PUBDB-2018-01167] Journal Article et al Pion vector form factor from lattice QCD at the physical point Physical review / D 97(1), 014508 (2018) [10.1103/PhysRevD.97.014508]   We present an investigation of the electromagnetic pion form factor, $F_{\pi}(Q^2)$, at small values of the four-momentum transfer $Q^2 (\lesssim 0.25$ $GeV^2$), based on the gauge configurations generated by the European Twisted Mass Collaboration with $N_f = 2$ twisted-mass quarks at maximal twist including a clover term. Momentum is injected using nonperiodic boundary conditions and the calculations are carried out at a fixed lattice spacing $(a \simeq 0.09 fm)$ and with pion masses equal to its physical value, 240 MeV and 340 MeV. [...] OpenAccess: PDF PDF (PDFA); 2018-02-1216:37 [PUBDB-2018-01166] Journal Article Orlando, D. Conformal Dimensions via Large Charge Expansion Physical review letters 120(6), 061603 (2018) [10.1103/PhysRevLett.120.061603]   We construct an efficient Monte Carlo algorithm that overcomes the severe signal-to-noise ratio problems and helps us to accurately compute the conformal dimensions of large-$Q$ fields at the Wilson-Fisher fixed point in the $O$(2) universality class. Using it, we verify a recent proposal that conformal dimensions of strongly coupled conformal field theories with a global $U$(1) charge can be obtained via a series expansion in the inverse charge 1/$Q$. [...] OpenAccess: PDF PDF (PDFA); 2018-02-1216:05 [PUBDB-2018-01164] Report/Journal Article et al Computing the nucleon charge and axial radii directly at $Q^2=0$ in lattice QCD [arXiv:1711.11385; DESY-17-203] Physical review / D 97(3), 034504 (2018) [10.1103/PhysRevD.97.034504]   We describe a procedure for extracting momentum derivatives of nucleon matrix elements on the lattice directly at $Q^2=0$. This is based on the Rome method for computing momentum derivatives of quark propagators. [...] OpenAccess: PDF PDF (PDFA); 2018-01-2912:29 [PUBDB-2018-00901] Lecture Schaefer, S. Fermion algorithms Lecture at Lattice practices (Zeuthen), 5 Apr 2017 - 6 Apr 2017 2018-01-2912:27 [PUBDB-2018-00900] Talk (non-conference) Schaefer, S. Using locality in lattice QCD Seminar, Meeting locationPlymouth University, 3 May 2017 - 3 May 2017 2018-01-2912:25 [PUBDB-2018-00899] Talk (non-conference) Schaefer, S. Using locality in lattice QCD Seminar, Meeting locationUniversity of Southampton, 13 Jan 2017 - 13 Jan 2017 2018-01-2911:24 [PUBDB-2018-00889] Lecture Sommer, R. Heavy quark effective theory: a predictive EFT on the lattice Lecture at summer school EFT in Particle Physics and Cosmology Les Houches, France (), 26 Jul 2017 - 27 Jul 2017 2018-01-2911:20 [PUBDB-2018-00886] Talk (non-conference) Sommer, R. How strong are the strong interactions? Colloquium, Meeting locationDESY, Zeuthen, 6 Dec 2017 - 6 Dec 2017 2018-01-2911:18 [PUBDB-2018-00884] Talk (non-conference) Sommer, R. How strong are the strong interactions? Colloquium, Meeting locationDESY, Hamburg, 5 Dec 2017 - 5 Dec 2017 2018-01-2911:16 [PUBDB-2018-00882] Talk (non-conference) Sommer, R. How strong are the strong interactions? Seminar, Meeting locationUniversity of Mainz, 21 Nov 2017 - 21 Nov 2017