ZEU-NIC

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2018-04-23
14:01
[PUBDB-2018-01829] Report/Journal Article
; ; ; et al
Topological susceptibility from twisted mass fermions using spectral projectors and the gradient flow
[ arXiv:1709.06596]
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2018-03-12
12:35
OpenAccess [PUBDB-2018-01450] Dissertation / PhD Thesis

Non-perturbative investigation of current correlators in twisted mass lattice QCD
Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 209 pp. (2013) [10.18452/16770] = Dissertation, Humboldt-Universität zu Berlin, 2013  GO
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2018-03-12
12:28
OpenAccess [PUBDB-2018-01449] Dissertation / PhD Thesis
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Chiral description and physical limit of pseudoscalar decay constants with four dynamical quarks and applicability of quasi-Monte Carlo for lattice systems
Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 107 pp. (2014) [10.18452/17244] = Dissertation, Humboldt-Universität zu Berlin, 2014  GO
In dieser Arbeit werden Massen und Zerfallskonstanten von pseudoskalaren Mesonen, insbes. dem Pion und dem D-s-Meson, im Rahmen der Quantenchromodynamik (QCD) berechnet [...]
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2018-03-12
11:18
OpenAccess [PUBDB-2018-01447] Dissertation / PhD Thesis
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Investigations of chiral symmetry breaking and topological aspects of lattice QCD
Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 198 pp. (2013) [10.18452/16890] = Dissertation, Humboldt-Universität zu Berlin, 2013  GO
Die spontane Brechung der chiralen Symmetrie ist ein faszinierendes Phenomän der QCD mit fundamentalen phänomenologischen Implikationen. Die Brechung der chiral Symmetrie ist beispielsweise verantwortlich für die niedrige Masse der Pionen, welche die effektiven Goldstone Boson der spontan gebrochene Symmetrie sind [...]
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2018-02-12
16:43
OpenAccess [PUBDB-2018-01167] Journal Article
; ; ; et al
Pion vector form factor from lattice QCD at the physical point
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. [...]
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2018-02-12
16:37
OpenAccess [PUBDB-2018-01166] Journal Article
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Conformal Dimensions via Large Charge Expansion
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/$Q$. [...]
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2018-02-12
16:05
OpenAccess [PUBDB-2018-01164] Report/Journal Article
; ; ; et al
Computing the nucleon charge and axial radii directly at $\mathrm{Q^2=0}$ in lattice QCD
[arXiv:1711.11385; DESY-17-203]
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. [...]
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2018-01-29
12:29
[PUBDB-2018-00901] Lecture

Fermion algorithms
Lecture at Lattice practices (Zeuthen), 5 Apr 2017 - 6 Apr 20172017-04-052017-04-06

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2018-01-29
12:27
[PUBDB-2018-00900] Talk (non-conference)

Using locality in lattice QCD
Seminar, Meeting locationPlymouth University, 3 May 2017 - 3 May 20172017-05-032017-05-03

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2018-01-29
12:25
[PUBDB-2018-00899] Talk (non-conference)

Using locality in lattice QCD
Seminar, Meeting locationUniversity of Southampton, 13 Jan 2017 - 13 Jan 20172017-01-132017-01-13

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