scholarly journals $ {\Lambda_{{\overline {\text{MS}} }}} $ from the static potential for QCD with n f  = 2 dynamical quark flavors

2012 ◽  
Vol 2012 (1) ◽  
Author(s):  
Karl Jansen ◽  
Felix Karbstein ◽  
Attila Nagy ◽  
Marc Wagner
Keyword(s):  
Static Potential ◽  
Quark Flavors ◽  
Dynamical Quark

scholarly journals ⟨x⟩ and ⟨x2⟩ of the pion PDF from lattice QCD with Nf=2+1+1 dynamical quark flavors

2019 ◽  
Vol 99 (1) ◽  
Author(s):  
M. Oehm ◽  
C. Alexandrou ◽  
M. Constantinou ◽  
K. Jansen ◽  
G. Koutsou ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
Quark Flavors ◽  
Dynamical Quark

scholarly journals B semileptonic decays with 2+1 dynamical quark flavors

2005 ◽  
Author(s):  
Emel Gulez ◽  
Christine Davies ◽  
Alan Gray ◽  
Peter Lepage ◽  
Junko Shigemitsu ◽  
...  
Keyword(s):  
Semileptonic Decays ◽  
Quark Flavors ◽  
Dynamical Quark

The Contribution of Phonon-Scattered Electrons to High-Resolution Electron Micrographs of Crystals

1990 ◽  
Vol 48 (1) ◽  
pp. 62-63
Author(s):  
H. Kohl
Keyword(s):  
High Resolution ◽  
Spherical Aberration ◽  
High Resolution Electron Microscopy ◽  
Static Potential ◽  
Qualitative Comparison ◽  
The Past ◽  
Resolution Electron ◽  
High Resolution Images ◽  
High Resolution Electron Micrographs ◽  
Extract Information

High-Resolution Electron Microscopy is able to determine structures of crystals and interfaces with a spatial resolution of somewhat less than 2 Å. As the image is strongly dependent on instrumental parameters, notably the defocus and the spherical aberration, the interpretation of micrographs necessitates a comparison with calculated images. Whereas one has often been content with a qualitative comparison of theory with experiment in the past, one is currently striving for quantitative procedures to extract information from the images [1,2]. For the calculations one starts by assuming a static potential, thus neglecting inelastic scattering processes.We shall confine the discussion to periodic specimens. All electrons, which have only been elastically scattered, are confined to very few directions, the Bragg spots. In-elastically scattered electrons, however, can be found in any direction. Therefore the influence of inelastic processes on the elastically (= Bragg) scattered electrons can be described as an attenuation [3]. For the calculation of high-resolution images this procedure would be correct only if we had an imaging energy filter capable of removing all phonon-scattered electrons. This is not realizable in practice. We are therefore forced to include the contribution of the phonon-scattered electrons.

scholarly journals Updates on the QCD phase diagram from lattice

2021 ◽  
Vol 31 (1) ◽  
Author(s):  
Sayantan Sharma
Keyword(s):  
Phase Diagram ◽  
Lattice Gauge Theory ◽  
Topological Properties ◽  
Chiral Phase ◽  
Qcd Phase Diagram ◽  
Qcd Vacuum ◽  
Lattice Gauge ◽  
Massless Quark ◽  
Quark Flavors

AbstractDifferent aspects of the phase diagram of strongly interacting matter described by quantum chromodynamics (QCD), which have emerged from the recent studies using lattice gauge theory techniques, are discussed. A special emphasis is given on understanding the role of the anomalous axial U(1) symmetry in determining the order of the finite temperature chiral phase transition in QCD with two massless quark flavors and tracing its origin to the topological properties of the QCD vacuum.

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