The Axial Magnetic Effect manifests itself as an equilibrium energy flow of massless fermions induced by the axial (chiral) magnetic field. Here we study the Axial Magnetic Effect in the quenched ...SU(2) lattice gauge theory with massless overlap fermions at finite temperature. We numerically observe that in the low-temperature hadron phase the effect is absent due to the quark confinement. In the high-temperature deconfinement phase the energy flow is an increasing function of the temperature which reaches the predicted asymptotic T2 behavior at high temperatures. We find, however, that energy flow is about one order of magnitude lower compared to a theoretical prediction.
Thin films of azo-calix4resorcinarene (AZO) and poly(9-vinylcarbazole) (PVK) have been deposited by the method of spin coating and are studied for the optical detection of volatile organic vapour ...molecules. Both types of films were exposed to a range of concentrations of the vapours of benzene, toluene,
n-hexane,
m-xylene, and 1-butanol, and films' interaction with the above molecules was monitored using surface plasmon resonance (SPR) method. The films optical parameters change as a result of such interaction; these changes were determined from the theoretical data fitting of the measured SPR curves. The reflection intensity was also monitored as a function of time at a fixed angle of incidence near the reflectivity minima of the SPR curves. Mechanism of interaction with the studied vapour molecules is discussed in terms of capillary condensation of the vapour molecules inside the nanoporous matrix of PVK and AZO films. The films' responsivity is found to correlate with the solubility of AZO and PVK molecules in the above solvents.
Analytic Continuation in Lattice QC2D Begun, A.; Bornyakov, V. G.; Gerasimeniuk, N. V. ...
Physics of particles and nuclei,
07/2021, Letnik:
52, Številka:
4
Journal Article
Recenzirano
We simulate the lattice QC
2
D with
staggered fermionic action at imaginary and real quark chemical potential
at one temperature slightly above
. We apply a few methods to make analytic continuation ...of the quark number density using our numerical results for imaginary
. Comparing the outcome of the analytic continuation procedures with our results at real
we determine the most effective way to make the analytic continuation. We believe this method can be applied to thelattice QCD data.
In the course of the study of Upper Riphean aluminosiliciclastic red beds in the South Urals researchers discovered an assemblage of discoidal structures interpreted as fossilized microbial colonies; ...their occurrence in close proximity to primitive paleosols suggests that the colonies could represent the earliest non-marine macroscopic communities. The Late Riphean microbial colonies from the Zilmerdak Formation occur in desiccated depositional environments in close proximity to primitive paleosols and are thought to be adapted to withstand salinity excursions and short periods of subaerial exposure.
Using first-principle lattice simulations, we demonstrate that in the background of a strong magnetic field (around \(10^{20}\) T), the electroweak sector of the vacuum experiences two consecutive ...crossover transitions associated with dramatic changes in the zero-temperature dynamics of the vector \(W\) bosons and the scalar Higgs particles, respectively. Above the first crossover, we observe the appearance of large, inhomogeneous structures consistent with a classical picture of the formation of \(W\) and \(Z\) condensates pierced by vortices. The presence of the \(W\) and \(Z\) condensates supports the emergence of the exotic superconducting and superfluid properties induced by a strong magnetic field in the vacuum. We find evidence that the vortices form a disordered solid or a liquid rather than a crystal. The second transition restores the electroweak symmetry. Such conditions can be realized in the near-horizon region of the magnetized black holes.
Sign problem in finite density lattice QCD Goy, V. A.; Bornyakov, V.; Boyda, D. ...
Progress of theoretical and experimental physics,
03/2017, Letnik:
2017, Številka:
3
Journal Article
A measurement of the top quark pair-production cross section in the lepton + jets decay channel is presented. It is based on 4.6 fb-1of $\sqrt{s}$ = 7 TeV pp collision data collected during 2011 by ...the ATLAS experiment at the CERN Large Hadron Collider. A three-class, multidimensional event classifier based on support vector machines is used to differentiate $t\bar{t}$ events from backgrounds. The $t\bar{t}$ production cross section is found to be σ$t\bar{t}$ = 168.5 ± 0.7(stat)$^{+6.2}_{-5.9}$(syst)$^{+ 3.4}_{-3.2}$(lumi) pb. In conclusion, the result is consistent with the Standard Model prediction based on QCD calculations at next-to-next-to-leading order.
We present the results of first-principle numerical simulations of Euclidean SU(3) Yang-Mills plasma rotating with a high imaginary angular frequency. The rigid Euclidean rotation is introduced via ...``rotwisted'' boundary conditions along imaginary time direction. The Polyakov loop in the co-rotating Euclidean reference frame shows the emergence of a spatially inhomogeneous confining-deconfining phase through a broad crossover transition. A continuation of our numerical results to Minkowski spacetime suggests that the gluon plasma, rotating at real angular frequencies, produces a new inhomogeneous phase possessing the confining phase near the rotation axis and the deconfinement phase in the outer regions. The inhomogeneous phase structure has a purely kinematic origin, rooted in the Tolman-Ehrenfest effect in a rotating medium. We also derive the Euclidean version of the Tolman-Ehrenfest law in imaginary time formalism and discuss two definitions of temperature at imaginary Euclidean rotation.
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