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@INPROCEEDINGS{Krieg:173307,
author = {Krieg, Stefan},
title = {{F}rom quarks to hadrons and back: spectral and bulk
properties of strongly interacting matter from {L}attice
{QCD}},
reportid = {FZJ-2014-06718},
year = {2014},
abstract = {Computing, from first principles, the hadron masses to
percent accuracy [Science 322, 1224], is only possible
through simulations of Lattice Quantum Chromodynamics (QCD).
With the advent of the present class of Pflop Machines and
novel simulation algorithms, we now can proceed to compute
per-mille effects in the particle spectrum, i.e. the
proton-neutron mass difference. This difference is due to a
subtle cancellation of already small effects (due to the
mass difference of the up- and down-quarks and the presence
of electromagnetic interactions). I will report on a Project
[Phys.Rev.Lett. 111, 252001 and arXiv:1406.4088] to compute
this and other mass differences using simulations of Lattice
QCD and Quantum Electrodynamics and discuss the new
simulations methods and highly efficient code employed. In
the case of the proton and the neutron, quarks and gluons
are confined to the hadron. If we, however, increase the
temperature of the system sufficiently, both particles will
'melt' and quarks and gluons behave as free particles
('quark-gluon-plasma'). This transition is described by the
Equation of State (EoS) of QCD [JHEP 1011,077]. I will
discuss an ongoing project (e.g. [Nucl.Phys. A904-905,
869c]) aimed at calculating the EoS including the effects of
a dynamical charm quark, which is relevant for temperatures
larger than 300-400 MeV.},
month = {Aug},
date = {2014-08-11},
organization = {XXVI IUPAP Conference on Computational
Physics, Boston (USA), 11 Aug 2014 - 14
Aug 2014},
subtyp = {Other},
cin = {JSC},
cid = {I:(DE-Juel1)JSC-20090406},
pnm = {411 - Computational Science and Mathematical Methods
(POF2-411)},
pid = {G:(DE-HGF)POF2-411},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/173307},
}