“Artificial vacuum” for T-violation experiment

We point out the possible use of matrix isolation spectroscopy in experimental tests of fundamental physics. As a concrete example we show how this technique might be applied to measuring the T-violation electron electric dipole moment d_e. We estimate that a dipole moment could be detected down to d_e ∼ 6 × 10⁻²⁸e cm, in comparison to the current limit of d_e < 10⁻²⁴e cm.     

Numerical simulations and experiment ofreverberation loss in shallow water

I.IntroductionUndcrwatersoundrevcrberationhasrccentlybecomeatopicofgreatinterestlI-3l.Sincethcrcverberationincludescombincdeffcctsofsoundpropagahonandscattering,andthesoundpropagationinshallowwaterismuchmorecomplicatedthanthatinthedeepsea,itisnecessarytOstudycarefullybothintheoryandexperimcnt.Fortheshortrangereverberationinshal1owwatcrtheray-basedmodelisavai1ab1e,whilefOr1ongrangethewave-basedmodelmustbeusedbecauscofcomp1icatcdmu1tipaths,refractioneffcctsandfrequencydependence.Thenorma1-mode…     

The second-order effects in the “rotating disk” experiment

We find the second-order inv/c effects in the four different modifications of the rotating disk experiment whose first-order effects have been analyzed and the experimental results obtained by us reported in another paper. The differences between our absolute space-time theory and the Newtonian ether theory are within effects of second order inv/c. We propose experiments for the measurement of the second-order effects on the rotating disk that can be considered asexperimenta crucis between both theories.     

Results of the search for strange quark matter and Q-balls with the SLIM experiment

The SLIM experiment at the Chacaltaya high altitude laboratory was sensitive to nuclearites and Q-balls which could be present in the cosmic radiation as possible Dark Matter components. It was sensitive also to strangelets, i.e. small lumps of Strange Quark Matter predicted at such altitudes by various phenomenological models. The analysis of 427 m² of Nuclear Track Detectors exposed for 4.22 years showed no candidate event. New upper limits on the flux of downgoing nuclearites and Q-balls at the 90% C.L. were established. The null result also restricts models for strangelets propagation through the Earth atmosphere.     

Proposal for sequential Stern–Gerlach experiment with programmable quantum processors

The historical significance of the Stern–Gerlach(SG) experiment lies in its provision of the initial evidence for space quantization. Over time, its sequential form has evolved into an elegant paradigm that effectively illustrates the fundamental principles of quantum theory. To date, the practical implementation of the sequential SG experiment has not been fully achieved. In this study, we demonstrate the capability of programmable quantum processors to simulate the sequential SG experiment. Th...     

A combined error calibration technique with experiment for frequency-space spectrum estimation

1 IntroductionDirection-finding technique based on the characteristic-value decompose of array covariancematrix is sensitive to the model errors and makes it difficult to realize a precise system. Themodel errors are dominatly composed of chan-nel ndsmatching, sensor coupling and locationerror. And each of them will bring great affection to the whole system. Some analyses of theseaspects have beed made ajnd a few results attai.ed[1--ic]. But all of these methods are basedon traditional MUSI…     

TheΔN=2 interaction and one-nucleon transfer reactions

Influence of theN=2 interaction on the one-nucleon transfer reactions is considered. The expressions for the (d, p) and (d, t) differential cross sections are derived in terms of the DWBA theory. Some modifications of obtained expressions convenient for numerical calculations are discussed.     

The interaction of water with SiMo interface. A core and valence photoemission investigation

Core level photoemission with MgKα radiation (hv = 1253.6 eV) and valence photoemission (hv = 21.2 eV) are presented for Si(1 1 1)-Mo interfaces at various Mo coverages (up to 3.2·10¹⁵ at cm⁻²) exposed to 6000 L of H₂O. The metal deposition strongly enhances the oxidation of Si with the complete H₂O dissociation and the formation of a SiO₂-like compound. The results are consistent with an interface growth with the formation of silicide islands.     

The interphase mass transfer in liquid–liquid systems with Marangoni effect

The European Physical Journal Special Topics - In this paper, we review the related studies on the interphase mass transfer process accompanied with Marangoni effect in liquid-liquid systems. The...     

Is the hydrophobic effect unique to water? The relation between solvation properties and network structure in water and modified water models

The properties of water as a solvent are related to the structure of its liquid phase which in turn depends on the intermolecular potential. In order to explore this relationship we investigate the properties of liquids formed by a number of modified water models. Changing the molecular geometry changes short-range molecular correlations and the network of hydrogen bonds. The solubility and anomalously low entropy of non-polar solutes is only slightly reduced. Reducing the hydrogen-bond strength increases the solubility and removes the low entropy of solution of uncharged spheres. We conclude that the hydrophobic effect depends on the existence of hydrogen bonds and other strong intermolecular interactions but not on the presence of a three-dimensional network.     

The “IR EXPERT” Information System for Solving Spectral and Structural Problems

The algorithms and characteristic features of realization of a new IR spectroscopy system IR EXPERT are considered. The special features of the system for solving problems in predicting the structure of compounds by its spectral parameters, verification of the proposed hypothesis, and construction of IR spectra models according to the structure of a compound on the basis of structural similarity and theoretical calculations are discussed.     

Are neutron stars with crystalline color-superconducting cores relevant for the LIGO experiment?

We estimate the maximal deformation that can be sustained by a rotating neutron star with a crystalline color-superconducting quark core. Our results suggest that current gravitational-wave data from the Laser Interferometer Gravitational-Wave Observatory have already reached the level where a detection would have been possible over a wide range of the poorly constrained QCD parameters. This leads to the nontrivial conclusion that compact objects do not contain maximally strained color crystalline cores drawn from this range of parameter space. We discuss the uncertainties associated with our simple model and how it can be improved in the future.     

The equivalent potential of water molecules for electronic structure of lysine

In order to get more reliable electronic structures of proteins in aqueous solution, it is necessary to construct a potential of water molecules for protein’s electronic structure calculation. The lysine is a hydrophilic amino acid. It is positively charged (Lys+) in neutral water solution. The first-principles, all-electron, ab initio calcula-tions, based on the density functional theory, have been performed to construct such an equivalent potential of water molecules for lysine (Lys+). The process consists of three parts. First, the electronic structure of the cluster containing Lys+ and water molecules is calculated. By adjusting the positions of water molecules, the geometric structure of the cluster having minimum total energy is determined. Then, based on the structure, the electronic structure of Lys+ with the potential of water molecules is calculated using the self-consistent cluster-embedding (SCCE) method. Finally, the electronic structure of Lys+ with the potential of dipoles is calculated. The dipoles are adjusted so that the electronic structure of Lys+ with the potential of dipoles is close to that of water molecules. Thus the equivalent potential of water molecules for the electronic structure of lysine is obtained. The major effect of water molecules on lysine’s electronic structure is raising the occupied eigenvalues about 0.5032 eV, and broadening energy gap 89%. The effect of water molecules on the electronic structure of lysine can be simulated by dipoles potential.     

“Principle of Indistinguishability” and Equations of Motion for Particles with Spin

In this work we review the derivation of Dirac and Weinberg equations based on a principle of indistinguishability for the (j,0) and (0,j) irreducible representations (irreps) of the homogeneous Lorentz group (HLG). We generalize this principle and explore its consequences for other irreps containing j1. We rederive Ahluwalia–Kirchbach equation using this principle and conclude that it yields equations of motion for any representation containing spin j and lower spins. We also use the obtained generators of the HLG for a given representation to explore the possibility of the existence of first order equations for that representation. We show that, except for j= , there exists no Dirac-like equation for the (j,0)(0,j) representation nor for the ( , ) representation. We rederive Kemmer–Duffin–Petieau (KDP) equation for the (1,0)( , )(0,1) representation by this method and show that the (1, )( ,1) representation satisfies a Dirac-like equation which describes a multiplet of with masses m and m/2, respectively.     

Non-QGP mechanisms for J/ψ suppression in h-A and A-A processes

The data of charmonium/bottonium suppressions in p-A collisions are analyzed by considering the shadowing effect of the gluon structure function at small x, the absorption in the target nuclei and the energy degradation of the produced $c\bar c$ pairs. The A-andx ₂-dependences of the suppression in p-A collisions are well described based on above physical considerations. The J/ψ suppression data in A-A collisions are also analyzed based on these mechanisms.     

The Essence of “Black Holes” for Elastic Waves in Solids with Cuspidal Sharpening

Doklady Physics - The effect of a “black hole” for elastic waves, discovered by M.A. Mironov and examined in detail by followers, is usually associated with propagation of elastic waves...     

The design and experimental investigation of control system for acoustic liner with adjustable impedance

1IntroductionThesoundabsorbiflglinershavebeenwidelyappliedtoductwallsofmodernaircraftturbofaneflginestoreducetheinternalIygeneratedenginenoise.Variousapproachesaimedatoptimizingtheacousticdesignhavebeendevelopedinordertoachievethehighnoisere-ductionrequiredbytheevennlorestringentnoiseregulations.However,foranygivenliningconfiguration.optimalnoiseattenuationcanonlyberealizedundertheconditionofalimitedfrequencyrange.Oncethesourceconditionchangestheoptimalconditioflcorrespondingtohigherinsertion…     

The AMADEUS experiment at DAΦNE and the analysis of KLOE data in the search for kaonic nuclear clusters

The AMADEUS experiment will perform for the first time full-acceptance studies of hadronic interactions of K^?? in light nuclei, with a complete experimental program for the case of the deeply bound kaonic nuclear states. The possible formation of a kaonic cluster could provide information concerning the modification of the kaon mass and of the $\overline{K}N $ interaction in the nuclear medium. In order to confirm or deny the existence of such exotic objects, the detection of all particles in the formation and decay processes will be performed, taking, moreover, advantage of the high luminosity reached by the recently upgraded DAΦNE accelerator. A preliminar study of this kind of hadronic interaction is being done by the AMADEUS collaboration by analyzing the KLOE data.     

The bright and dark photon number states in Young’s interference experiment

In this paper, we derive the bright and dark photon number states for spatial interference of two or more light beams and succeed in the explanation of Young's interference experiment, and also achieve a better comprehension of the well known comment of Dirac "each photon only interferences with itself". Prom the fully quantum point of view, the origin of the interference fringes consists in the mode transformation and the detection of double-slit states.