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We consider the effect of strong external electromagnetic fields on thermodynamic observables in QCD, through lattice simulations with 1+1+1 flavors of staggered quarks at physical quark masses. Continuum extrapolated results are presented…

High Energy Physics - Lattice · Physics 2013-01-25 G. S. Bali , F. Bruckmann , M. Constantinou , M. Costa , G. Endrodi , Z. Fodor , S. D. Katz , S. Krieg , H. Panagopoulos , A. Schafer , K. K. Szabo

We review canonical experiments on systems that have pushed the boundary between the quantum and classical worlds towards much larger scales, and discuss their unique features that enable quantum coherence to survive. Because the types of…

Quantum Physics · Physics 2015-06-19 Tristan Farrow , Vlatko Vedral

High-energy particles traversing a medium experience modified dispersion. In the Quark-Gluon Plasma, such dispersion affects jet propagation and transport properties and should be determined better. Above $\sim 2T_c$ we expect strongly…

High Energy Physics - Phenomenology · Physics 2023-07-14 Jacopo Ghiglieri , Guy D. Moore , Philipp Schicho , Niels Schlusser

Quantum electrodynamics (qed) is used to derive the differential cross sections measured in the three new experimental internal source ensemble x-ray holographies: bremsstrahlung (BXH), fluorescence (XFH), and multiple-energy (MEXH) x-ray…

Condensed Matter · Physics 2009-10-28 Gerald A. Miller , Larry B. Sorensen

We consider how two classes of heavy particles: extra vector-like families, and strongly interacting superpartners, manifest themselves below threshold, by interference of virtual loops with normal QCD processes. Quantitative estimates are…

High Energy Physics - Phenomenology · Physics 2009-10-28 Per Kraus , Frank Wilczek

The grand partition function of a model of confined quarks is exactly calculated at arbitrary temperatures and quark chemical potentials. The model is inspired by a softly BRST-broken version of QCD and possesses a quark mass function…

High Energy Physics - Phenomenology · Physics 2015-10-28 M. S. Guimaraes , B. W. Mintz , L. F. Palhares

We revisit the phase structure and thermodynamics of QCD in the low temperature and high density region, where a strong, first-order phase transition is expected beyond the critical end point. By solving the quark gap equation in the…

High Energy Physics - Phenomenology · Physics 2026-02-10 Yi Lu , Fei Gao , Yu-xin Liu

The present knowledge of QCD confining forces between static test charges is summarised, with an emphasis on lattice results. Recent developments in relating QCD potentials to quarkonium properties by use of effective field theory methods…

High Energy Physics - Phenomenology · Physics 2011-01-25 Gunnar S. Bali

The low-lying energy spectrum of the static-colour-source-anti-source system in a vacuum containing light and strange quarks is computed using lattice QCD for a range of different light quark masses. The resulting levels are described using…

High Energy Physics - Lattice · Physics 2024-06-10 John Bulava , Francesco Knechtli , Vanessa Koch , Colin Morningstar , Michael Peardon

Starting from the meson-meson Green function in 3+1 dimensional quenched lattice QCD we calculate potentials between heavy-light mesons for various light-quark mass parameters. For the valence quarks we employ the staggered scheme. The…

High Energy Physics - Lattice · Physics 2009-10-28 H. R. Fiebig , A. Mihaly , H. Markum , K. Rabitsch

The overlapping stage of heavy-ion reactions can be simulated by dynamical microscopical models, such as those built on the basis of the Molecular Dynamics (MD) approaches, allowing to study the fragment formation process. The present…

Nuclear Theory · Physics 2009-03-09 M. V. Garzelli

Monte Carlo simulations applied to the lattice formulation of quantum chromodynamics (QCD) enable a study of the theory from first principles, in a nonperturbative way. After over two decades of developments in the methodology for this…

High Energy Physics - Lattice · Physics 2007-05-23 Tereza Mendes

High energy heavy-ion collisions in laboratory produce a form of matter that can test Quantum Chromodynamics (QCD), the theory of strong interactions, at high temperatures. One of the exciting possibilities is the existence of…

High Energy Physics - Phenomenology · Physics 2020-04-10 Sourendu Gupta , Debasish Mallick , Dipak Kumar Mishra , Bedangadas Mohanty , Nu Xu

We extend our work on QCD thermodynamics with 2+1 quark flavors at nonzero chemical potential to finer lattices with $N_t=6$. We study the equation of state and other thermodynamic quantities, such as quark number densities and…

High Energy Physics - Lattice · Physics 2014-11-20 C. DeTar , L. Levkova , Steven Gottlieb , U. M. Heller , J. E. Hetrick , R. Sugar , D. Toussaint

We present a kind of model of quantum electrodynamics with nonlocal interaction, all the action and the equations of motion of charged particle and electromagnetic field are given. The main characteristics of the theory are: the model obeys…

High Energy Physics - Theory · Physics 2011-06-08 T. Mei

In this paper we study the emergence of steady electric currents in QCD as a response to a non-uniform magnetic background using lattice simulations with 2 + 1 quark flavors at the physical point, as well as leading-order chiral…

High Energy Physics - Lattice · Physics 2024-07-08 B. B. Brandt , G. Endrődi , G. Markó , A. D. M. Valois

We consider thermodynamics of the Universe within a quasiparticle approach where the collective dynamics of a system is governed by the thermal mass of the constituents. The spacetime dependence of this thermal mass leads to a negative…

High Energy Physics - Theory · Physics 2024-04-30 Amaresh Jaiswal

The far-reaching gravitational force is described by a heuristic impact model with hypothetical massless entities propagating at the speed of light in vacuum and transferring momentum and energy be- tween massive bodies through interactions…

General Physics · Physics 2018-04-12 K. Wilhelm , B. N. Dwivedi

We investigate medium effects in QCD like chromoelectric screening and quasi-particle mass generation by calculating the heavy quark potential as well as the temporal quark and gluon Coulomb gauge propagators in quenched approximation.

High Energy Physics - Lattice · Physics 2014-11-17 P. Petreczky with O. Kaczmarek , F. Karsch , E. Laermann , S. Stickan , I. Wetzorke , F. Zantow

We investigated top quark effects on virtual photon structure functions by pQCD. We include the top quark mass effects on the virtual photon structure function with the quark parton model and with the operator product expansion up to the…

High Energy Physics - Phenomenology · Physics 2011-08-17 Yoshio Kitadono