Search results for " Wilson"
showing 10 items of 13 documents
Structure of longitudinal chromomagnetic fields in high energy collisions
2014
We compute expectation values of spatial Wilson loops in the forward light cone of high-energy collisions. We consider ensembles of gauge field configurations generated from a classical Gaussian effective action as well as solutions of high-energy renormalization group evolution with fixed and running coupling. The initial fields correspond to a color field condensate exhibiting domain-like structure over distance scales of order the saturation scale. At later times universal scaling emerges at large distances for all ensembles, with a nontrivial critical exponent. Finally, we compare the results for the Wilson loop to the two-point correlator of magnetic fields.
Zaburzenia metabolizmu miedzi w przebiegu choroby Wilsona
2022
Choroba Wilsona jest rzadką chorobą genetyczną charakteryzującą się zaburzonym metabolizmem miedzi. Dziedziczona jest w sposób autosomalny recesywny. Kluczowym organem odpowiedzialnym za metabo- lizowanie miedzi jest wątroba. Specyficzność substratową do jonów miedzi posiada białko transportowe ATP-aza typu P-ATP7B. Enzym przyczynia się do fizjologicznego transportu miedzi we wnętrzu komórki i jego wydalania z organizmu. Zmiany w genie kodującym białko ATP7B powodują nieprawidłowe funkcjonowania enzymu i brak jego współpracy z białkiem opiekuńczym ATOX1. W efekcie miedź nie zostaje przyłączona do ceruloplazminy oraz nie jest wydalana do jelit. Następuje gromadzenie pierwiastka we wnętrzu ko…
Che ci fa Carlo Scarpa in scena a Oslo?
2017
Lo spettacolo teatrale Edda (di Jon Fosse per la regia di Robert Wilson), apre una riflessione sul significato dell’astrazione. Quando i riferimenti culturali rappresentano la riduzione in simboli della realtà, e quando invece sono irriconoscibili segni?
Light Quark Masses from Lattice Quark Propagators at Large Momenta
1999
We compute non-perturbatively the average up-down and strange quark masses from the large momentum (short-distance) behaviour of the quark propagator in the Landau gauge. This method, which has never been applied so far, does not require the explicit calculation of the quark mass renormalization constant. Calculations were performed in the quenched approximation, by using O(a)-improved Wilson fermions. The main results of this study are ml^RI(2GeV)=5.8(6)MeV and ms^RI(2GeV)=136(11)MeV. Using the relations between different schemes, obtained from the available four-loop anomalous dimensions, we also find ml^RGI=7.6(8)MeV and ms^RGI=177(14)MeV, and the MSbar-masses, ml^MS(2GeV)=4.8(5)MeV and …
Leading isospin breaking effects in the HVP contribution to $a_{\mu}$ and to the running of $\alpha$
2021
The 38th International Symposium on Lattice Field Theory, LATTICE2021, Zoom/Gather@Massachusetts Institute of Technology, USA, 26 Jul 2021 - 30 Jul 2021; Proceedings of Science / International School for Advanced Studies (LATTICE2021), 106 (2021). doi:10.22323/1.396.0106
Dynamical twisted mass fermions with light quarks
2007
We present results of dynamical simulations with 2 flavours of degenerate Wilson twisted mass quarks at maximal twist in the range of pseudo scalar masses from 300 to 550 MeV. The simulations are performed at one value of the lattice spacing a \lesssim 0.1 fm. In order to have O(a) improvement and aiming at small residual cutoff effects, the theory is tuned to maximal twist by requiring the vanishing of the untwisted quark mass. Precise results for the pseudo scalar decay constant and the pseudo scalar mass are confronted with chiral perturbation theory predictions and the low energy constants F, \bar{l}_3 and \bar{l}_4 are evaluated with small statistical errors.
Stany Zjednoczone w I wojnie światowej a odzyskanie niepodległości przez Polskę w 1918 roku w ujęciu współczesnej szkolnej narracji podręcznikowej
2018
Accotding to many historians, the US accession to the war in 1917 was of significant importance for the final resolution of the conflict, and thus also the revival of the independedt Polish state. In the article, we analyse this issue on the basic of contemporary Polish school history education. Textbooks for high school and technical school students were used as the source. Their authors agreed that "the entrance of Uncle Sam into the game", that is, the accession of the United States to the war in 1917 was one of the landmark moments in its over four - year history. The US president Thomas W. Wilson from January 8, 1918, in which a separate point about the revival of the independent Polis…
Remarks on strange-quark simulations with Wilson fermions
2020
Physical review / D 102(7), 074506 (1-10) (2020). doi:10.1103/PhysRevD.102.074506
On the strength of the U A (1) anomaly at the chiral phase transition in N f = 2 QCD
2016
We study the thermal transition of QCD with two degenerate light flavours by lattice simulations using $O(a)$-improved Wilson quarks. Temperature scans are performed at a fixed value of $N_t = (aT)^{-1}=16$, where $a$ is the lattice spacing and $T$ the temperature, at three fixed zero-temperature pion masses between 200 MeV and 540 MeV. In this range we find that the transition is consistent with a broad crossover. As a probe of the restoration of chiral symmetry, we study the static screening spectrum. We observe a degeneracy between the transverse isovector vector and axial-vector channels starting from the transition temperature. Particularly striking is the strong reduction of the split…