326 research outputs found
From bubbles to foam: dilute to dense evolution of hadronic wave function at high energy
We derive the evolution of a hadronic light cone wave function with energy at
weak coupling. Our derivation is valid both in the high and the low partonic
density limit, and thus encompasses both the JIMWLK and the KLWMIJ evolution.
The hadronic wave function is shown to evolve by the action of the
Bogoliubov-type operator, which diagonalizes on the soft gluon sector the
light-cone hamiltonian in the presence of an arbitrary valence charge density.
We find explicitly the action of this operator on the soft as well as the
valence degrees of freedom of the theory.Comment: 30 page
Pomeron loop and running coupling effects in high energy QCD evolution
Within the framework of a (1+1)-dimensional model which mimics evolution and
scattering in QCD at high energy, we study the influence of the running of the
coupling on the high-energy dynamics with Pomeron loops. We find that the
particle number fluctuations are strongly suppressed by the running of the
coupling, by at least one order of magnitude as compared to the case of a fixed
coupling, for all the rapidities that we have investigated, up to Y=200. This
reflects the slowing down of the evolution by running coupling effects, in
particular, the large rapidity evolution which is required for the formation of
the saturation front via diffusion. We conclude that, for all energies of
interest, processes like deep inelastic scattering or forward particle
production can be reliably studied within the framework of a mean-field
approximation (like the Balitsky-Kovchegov equation) which includes running
coupling effects.Comment: 23 pages, 8 figure
ΠΠΎΠΊΡΡΡΠΈΡ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ Π΄Π²ΡΠΌΠ΅ΡΠ½ΠΎ ΡΠΏΠΎΡΡΠ΄ΠΎΡΠ΅Π½Π½ΠΎΠ³ΠΎ Π»ΠΈΠ½Π΅ΠΉΠ½ΠΎ-ΡΠ΅ΠΏΠΎΡΠ΅ΡΠ½ΠΎΠ³ΠΎ ΡΠ³Π»Π΅ΡΠΎΠ΄Π° Π΄Π»Ρ Π·Π°ΡΠΈΡΡ ΡΠΈΡΠ°Π½ΠΎΠ²ΡΡ ΠΈΠΌΠΏΠ»Π°Π½ΡΠ°ΡΠΎΠ² ΠΎΡ ΠΌΠΈΠΊΡΠΎΠ±Π½ΠΎΠΉ ΠΊΠΎΠ»ΠΎΠ½ΠΈΠ·Π°ΡΠΈΠΈ
Purpose of the study β to evaluate the antibacterial activity and biological compatibility of alloy coatings based on two-dimensionally ordered linear chain carbon (TDOLCC).Materials and Methods. Coatings based on TDOLCC were synthesized using alloying additions like nitrogen (TDOLCC+N) and silver (TDOLCC+Ag) on the surfaces of titanium plates and polystyrene plates by the ion-stimulated carbon condensation in a vacuum. The authors examined the superficial bactericidal activity of the coatings and its resistance to mechanical effects. Coated plates were evaluated in respect of rate of microbial biofilms formation by clinical isolates with multiple and extreme antibiotic resistance. Specimens were colored with crystal violet solution to visualize the biofilms. Cytotoxic effect of coatings was evaluated in respect of primary culture of fibroblasts and keratinocyte cell line HaCaT.Results. The authors observed pronounced superficial bactericidal effect of TDOLCC+Ag coating in respect of microorganisms of several taxonomic groups independently of their resistance to antibacterial drugs. TDOLCC+Ag coating proved capable to completely prevent microbial biofilm formation by antibiotic resistant clinical isolates of S. aureus and P. aeruginosa. Silvercontaining coating demonstrated mechanical resistance and preservation of close to baseline level of superficial bactericidal activity even after lengthy abrasion treatment. TDOLCC based coatings did not cause any cytotoxic effects. Structure of monolayers formed in cavities coated by TDOLCC+N and TDOLCC+Ag was indistinguishable from the monolayers in cavities of control plates.Π¦Π΅Π»Ρ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ β ΠΎΡΠ΅Π½ΠΈΡΡ Π°Π½ΡΠΈΠ±Π°ΠΊΡΠ΅ΡΠΈΠ°Π»ΡΠ½ΡΡ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΈ Π±ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΡΡ ΡΠΎΠ²ΠΌΠ΅ΡΡΠΈΠΌΠΎΡΡΡ Π»Π΅Π³ΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΠΏΠΎΠΊΡΡΡΠΈΠΉ ΠΌΠ΅ΡΠ°Π»Π»ΠΎΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΠΉ Π΄Π»Ρ ΠΎΡΡΠ΅ΠΎΡΠΈΠ½ΡΠ΅Π·Π° Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ Π΄Π²ΡΠΌΠ΅ΡΠ½ΠΎ ΡΠΏΠΎΡΡΠ΄ΠΎΡΠ΅Π½Π½ΠΎΠ³ΠΎ Π»ΠΈΠ½Π΅ΠΉΠ½ΠΎ-ΡΠ΅ΠΏΠΎΡΠ΅ΡΠ½ΠΎΠ³ΠΎ ΡΠ³Π»Π΅ΡΠΎΠ΄Π° (ΠΠ£ ΠΠ¦Π£).ΠΠ°ΡΠ΅ΡΠΈΠ°Π» ΠΈ ΠΌΠ΅ΡΠΎΠ΄Ρ. ΠΠ΅ΡΠΎΠ΄ΠΎΠΌ ΠΈΠΎΠ½Π½ΠΎ-ΡΡΠΈΠΌΡΠ»ΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠΉ ΠΊΠΎΠ½Π΄Π΅Π½ΡΠ°ΡΠΈΠΈ ΡΠ³Π»Π΅ΡΠΎΠ΄Π° Π² Π²Π°ΠΊΡΡΠΌΠ΅ Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΡΡ
ΡΠΈΡΠ°Π½ΠΎΠ²ΡΡ
ΠΏΠ»Π°ΡΡΠΈΠ½ ΠΈ ΠΏΠΎΠ»ΠΈΡΡΠΈΡΠΎΠ»ΠΎΠ²ΡΡ
ΠΏΠ»Π°Π½ΡΠ΅ΡΠΎΠ² ΡΠΈΠ½ΡΠ΅Π·ΠΈΡΠΎΠ²Π°Π½Ρ ΠΏΠΎΠΊΡΡΡΠΈΡ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΠΠ£ ΠΠ¦Π£ Ρ Π»Π΅Π³ΠΈΡΡΡΡΠΈΠΌΠΈ Π΄ΠΎΠ±Π°Π²ΠΊΠ°ΠΌΠΈ: Π°Π·ΠΎΡΠΎΠΌ (ΠΠ£ ΠΠ¦Π£+N) ΠΈ ΡΠ΅ΡΠ΅Π±ΡΠΎΠΌ (ΠΠ£ ΠΠ¦Π£+Ag). ΠΠ·ΡΡΠ΅Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠ½Π°Ρ Π±Π°ΠΊΡΠ΅ΡΠΈΡΠΈΠ΄Π½Π°Ρ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΏΠΎΠΊΡΡΡΠΈΠΉ ΠΈ Π΅Π΅ ΡΡΡΠΎΠΉΡΠΈΠ²ΠΎΡΡΡ ΠΊ ΠΌΠ΅Ρ
Π°Π½ΠΈΡΠ΅ΡΠΊΠΈΠΌ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΡΠΌ. ΠΠ° ΠΏΠ»Π°ΡΡΠΈΠ½Π°Ρ
Ρ ΠΏΠΎΠΊΡΡΡΠΈΡΠΌΠΈ ΠΎΡΠ΅Π½Π΅Π½Π° ΠΈΠ½ΡΠ΅Π½ΡΠΈΠ²Π½ΠΎΡΡΡ ΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΌΠΈΠΊΡΠΎΠ±Π½ΡΡ
Π±ΠΈΠΎΠΏΠ»Π΅Π½ΠΎΠΊ ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ ΠΈΠ·ΠΎΠ»ΡΡΠ°ΠΌΠΈ ΠΌΠΈΠΊΡΠΎΠΎΡΠ³Π°Π½ΠΈΠ·ΠΌΠΎΠ² ΡΠΎ ΠΌΠ½ΠΎΠΆΠ΅ΡΡΠ²Π΅Π½Π½ΠΎΠΉ ΠΈ ΡΠΊΡΡΡΠ΅ΠΌΠ°Π»ΡΠ½ΠΎΠΉ Π°Π½ΡΠΈΠ±ΠΈΠΎΡΠΈΠΊΠΎΡΠ΅Π·ΠΈΡΡΠ΅Π½ΡΠ½ΠΎΡΡΡΡ, Π΄Π»Ρ Π²ΠΈΠ·ΡΠ°Π»ΠΈΠ·Π°ΡΠΈΠΈ ΡΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
Π±ΠΈΠΎΠΏΠ»Π΅Π½ΠΎΠΊ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΎ ΠΎΠΊΡΠ°ΡΠΈΠ²Π°Π½ΠΈΠ΅ ΠΎΠ±ΡΠ°Π·ΡΠΎΠ² ΡΠ°ΡΡΠ²ΠΎΡΠΎΠΌ ΠΊΡΠΈΡΡΠ°Π»Π»ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠΈΠΎΠ»Π΅ΡΠΎΠ²ΠΎΠ³ΠΎ. ΠΡΠ΅Π½ΠΊΠ° ΡΠΈΡΠΎΡΠΎΠΊΡΠΈΡΠ½ΠΎΡΡΠΈ ΠΏΠΎΠΊΡΡΡΠΈΠΉ Π²ΡΠΏΠΎΠ»Π½Π΅Π½Π° Π² ΠΎΡΠ½ΠΎΡΠ΅Π½ΠΈΠΈ ΠΏΠ΅ΡΠ²ΠΈΡΠ½ΠΎΠΉ ΠΊΡΠ»ΡΡΡΡΡ ΡΠΈΠ±ΡΠΎΠ±Π»Π°ΡΡΠΎΠ² ΠΈ ΠΊΠ»Π΅ΡΠΎΡΠ½ΠΎΠΉ Π»ΠΈΠ½ΠΈΠΈ ΠΊΠ΅ΡΠ°ΡΠΈΠ½ΠΎΡΠΈΡΠΎΠ² HaCaT.Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ. ΠΡΡΠ²Π»Π΅Π½ Π²ΡΡΠ°ΠΆΠ΅Π½Π½ΡΠΉ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠ½ΡΠΉ Π±Π°ΠΊΡΠ΅ΡΠΈΡΠΈΠ΄Π½ΡΠΉ ΡΡΡΠ΅ΠΊΡ ΠΏΠΎΠΊΡΡΡΠΈΠΉ ΠΠ£ ΠΠ¦Π£+Ag Π² ΠΎΡΠ½ΠΎΡΠ΅Π½ΠΈΠΈ ΠΌΠΈΠΊΡΠΎΠΎΡΠ³Π°Π½ΠΈΠ·ΠΌΠΎΠ² Π½Π΅ΡΠΊΠΎΠ»ΡΠΊΠΈΡ
ΡΠ°ΠΊΡΠΎΠ½ΠΎΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
Π³ΡΡΠΏΠΏ, Π½Π΅ Π·Π°Π²ΠΈΡΡΡΠΈΠΉ ΠΎΡ ΠΈΡ
ΡΡΡΠΎΠΉΡΠΈΠ²ΠΎΡΡΠΈ ΠΊ Π°Π½ΡΠΈΠ±Π°ΠΊΡΠ΅ΡΠΈΠ°Π»ΡΠ½ΡΠΌ ΠΏΡΠ΅ΠΏΠ°ΡΠ°ΡΠ°ΠΌ. ΠΠ»Ρ ΠΏΠΎΠΊΡΡΡΠΈΡ ΠΠ£ ΠΠ¦Π£+Ag ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½Π° ΡΠΏΠΎΡΠΎΠ±Π½ΠΎΡΡΡ ΠΏΠΎΠ»Π½ΠΎΠ³ΠΎ ΠΏΡΠ΅Π΄ΠΎΡΠ²ΡΠ°ΡΠ΅Π½ΠΈΡ ΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΌΠΈΠΊΡΠΎΠ±Π½ΡΡ
Π±ΠΈΠΎΠΏΠ»Π΅Π½ΠΎΠΊ Π°Π½ΡΠΈΠ±ΠΈΠΎΡΠΈΠΊΠΎ-ΡΠ΅Π·ΠΈΡΡΠ΅Π½ΡΠ½ΡΠΌΠΈ ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ ΠΈΠ·ΠΎΠ»ΡΡΠ°ΠΌΠΈ S. aureus ΠΈ P. aeruginosa. ΠΠΎΠΊΠ°Π·Π°Π½Π° ΠΌΠ΅Ρ
Π°Π½ΠΈΡΠ΅ΡΠΊΠ°Ρ ΡΡΡΠΎΠΉΡΠΈΠ²ΠΎΡΡΡ ΡΠ΅ΡΠ΅Π±ΡΠΎΡΠΎΠ΄Π΅ΡΠΆΠ°ΡΠ΅Π³ΠΎ ΠΏΠΎΠΊΡΡΡΠΈΡ Ρ ΡΠΎΡ
ΡΠ°Π½Π΅Π½ΠΈΠ΅ΠΌ ΡΡΠΎΠ²Π½Ρ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠ½ΠΎΠΉ Π±Π°ΠΊΡΠ΅ΡΠΈΡΠΈΠ΄Π½ΠΎΠΉ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ, Π±Π»ΠΈΠ·ΠΊΠΎΠ³ΠΎ ΠΊ ΠΈΡΡ
ΠΎΠ΄Π½ΠΎΠΌΡ, Π΄Π°ΠΆΠ΅ ΠΏΠΎΡΠ»Π΅ ΠΏΡΠΎΠ΄ΠΎΠ»ΠΆΠΈΡΠ΅Π»ΡΠ½ΠΎΠΉ Π°Π±ΡΠ°Π·ΠΈΠ²Π½ΠΎΠΉ ΠΎΠ±ΡΠ°Π±ΠΎΡΠΊΠΈ. ΠΠΎΠΊΡΡΡΠΈΡ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΠΠ£ ΠΠ¦Π£ Π½Π΅ Π²ΡΠ·ΡΠ²Π°Π»ΠΈ ΡΠΈΡΠΎΡΠΎΠΊΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΡΡΠ΅ΠΊΡΠΎΠ². Π‘ΡΡΡΠΊΡΡΡΠ° ΠΌΠΎΠ½ΠΎΡΠ»ΠΎΡ, ΡΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ Π² Π»ΡΠ½ΠΊΠ°Ρ
Ρ ΠΏΠΎΠΊΡΡΡΠΈΡΠΌΠΈ ΠΠ£ ΠΠ¦Π£+N ΠΈ ΠΠ£ ΠΠ¦Π£+Ag, Π±ΡΠ»Π° Π½Π΅ΠΎΡΠ»ΠΈΡΠΈΠΌΠ° ΠΎΡ Π»ΡΠ½ΠΎΠΊ ΠΊΠΎΠ½ΡΡΠΎΠ»ΡΠ½ΡΡ
ΠΏΠ»Π°Π½ΡΠ΅ΡΠΎΠ²
The Investigation of Influence Polyisobutilene Additions to Kerosene at the Efficiency of Combustion
Surface Polymer Network Model and Effective Membrane Curvature Elasticity
A microscopic model of a surface polymer network - membrane system is
introduced, with contact polymer surface interactions that can be either
repulsive or attractive and sliplinks of functionality four randomly
distributed over the supporting membrane surface anchoring the polymers to it.
For the supporting surface perturbed from a planar configuration and a small
relative number of surface sliplinks, we investigate an expansion of the free
energy in terms of the local curvatures of the surface and the surface density
of sliplinks, obtained through the application of the Balian - Bloch -
Duplantier multiple surface scattering method. As a result, the dependence of
the curvature elastic modulus, the Gaussian modulus as well as of the
spontaneous curvature of the "dressed" membrane, ~{\sl i.e.} polymer network
plus membrane matrix, is obtained on the mean polymer bulk end to end
separation and the surface density of sliplinks.Comment: 15 pages with one included compressed uuencoded figure
Limits on the monopole magnetic field from measurements of the electric dipole moments of atoms, molecules and the neutron
A radial magnetic field can induce a time invariance violating electric
dipole moment (EDM) in quantum systems. The EDMs of the Tl, Cs, Xe and Hg atoms
and the neutron that are produced by such a field are estimated. The
contributions of such a field to the constants, of the T,P-odd
interactions and are also estimated for the TlF, HgF and YbF molecules (where
() is the electron (nuclear) spin and is the molecular
axis). The best limit on the contact monopole field can be obtained from the
measured value of the Tl EDM. The possibility of such a field being produced
from polarization of the vacuum of electrically charged magnetic monopoles
(dyons) by a Coulomb field is discussed, as well as the limit on these dyons.
An alternative mechanism involves chromomagnetic and chromoelectric fields in
QCD.Comment: Uses RevTex, 16 pages, 4 postscript figures. An explanation of why
there is no orbital contribution to the EDM has been added, and the
presentation has been improved in genera
Parity nonconservation in heavy atoms: The radiative correction enhanced by the strong electric field of the nucleus
Parity nonconservation due to the nuclear weak charge is considered. We
demonstrate that the radiative corrections to this effect due to the vacuum
fluctuations of the characteristic size larger than the nuclear radius
and smaller than the electron Compton wave-length are enhanced
because of the strong electric field of the nucleus. The parameter that allows
one to classify the corrections is the large logarithm .
The vacuum polarization contribution is enhanced by the second power of the
logarithm. Although the self-energy and the vertex corrections do not vanish,
they contain only the first power of the logarithm. The value of the radiative
correction is 0.4% for Cs and 0.9% for Tl, Pb, and Bi. We discuss also how the
correction affects the interpretation of the experimental data on parity
nonconservation in atoms.Comment: 4 pages, 3 figures, RevTe
Subcarrier Wave Quantum Key Distribution in Telecommunication Network with Bitrate 800 kbit/s
In the course of work on creating the first quantum communication network in Russia we demonstrated quantum key distribution in metropolitan optical network infrastructure. A single-pass subcarrier wave quantum cryptography scheme was used in the experiments. BB84 protocol with strong reference was chosen for performing key distribution. The registered sifted key rate in an optical cable with 1.5 dB loss was 800 Kbit/s. Signal visibility exceeded 98%, and quantum bit error rate value was 1%. The achieved result is a record for this type of systems
A QCD motivated model for soft interactions at high energies
In this paper we develop an approach to soft scattering processes at high
energies,which is based on two mechanisms: Good-Walker mechanism for low mass
diffractionand multi-Pomeron interactions for high mass diffraction. The
pricipal idea, that allows us to specify the theory for Pomeron interactions,
is that the so called soft processes occur at rather short distances
(r^2 \propto 1 /^2 \propto \alpha'_\pom \approx 0.01 GeV^{-2}), where
perturbative QCD is valid. The value of the Pomeron slope \alpha'_\pom was
obtained from the fit to experimental data. Using this theoretical approach we
suggest a model that fits all soft data in the ISR-Tevatron energy range, the
total, elastic, single and double diffractive cross sections, including
dependence of the differential elastic cross section, and the mass dependence
of single diffraction. In this model we calculate the survival probability of
diffractive Higgs production, and obtained a value for this observable, which
is smaller than 1% at the LHC energy range.Comment: 33pp,20 figures in eps file
On the role of longitudinal momenta in high energy hadron-hadron scattering
We demonstrate a new method for the calculation of inelastic scattering
cross-section, which in contrary to the Regge-based methods takes into account
the energy momentum conservation law. By virtue of this method it was shown
that the main contribution to integral expressing inelastic scattering
cross-sections comes not from the multi-Regge domain. In particular this leads
to the fact that accounting of longitudinal momenta contribution to
virtualities is sufficient and results in the new mechanism of cross-section
growth. The necessity of taking into account the large number of interference
contributions is shown and the approximate method for this purpose is
developed. By considering the interference contributions from a single fitting
constant achieved a qualitative agreement of the total and inelastic cross
sections with experimental data.Comment: 38 pages, 19 figures (A misspelled author's name corrected
- β¦