The impact of large-scale tides on cosmological distortions via redshift-space power spectrum

Although the large-scale perturbations beyond a finite-volume survey region are not direct observables, these affect measurements of clustering statistics of small-scale (sub-survey) perturbations in the large-scale structure, compared with the ensemble average, via the mode-coupling effect. In this paper we show that the large-scale tides induced by scalar perturbations cause apparent anisotropic distortions in the redshift-space power spectrum of galaxies in a way depending on an alignment between the tides, the wavevector of small-scale modes and the line-of-sight direction. Using the perturbation theory of structure formation, we derive the $\textit{response}$ function of the redshift-space power spectrum to the large-scale tides. We then investigate the impact of the large-scale tides on estimation of cosmological distances and the redshift-space distortion parameter via the measured redshift-space power spectrum for a hypothetical large-volume survey, based on the Fisher matrix formalism. To do this, we treat the large-scale tides as a signal, rather than an additional source of the statistical errors, and show that a degradation in the parameter is restored if we can employ the prior on the rms amplitude expected for the standard cold dark matter (CDM) model. We also discuss whether the large-scale tides can be constrained at an accuracy better than the CDM prediction, if the effects up to a larger wavenumber in the nonlinear regime can be included.Comment: 15 pages, 3 figure

Synthesis of Poly(1,4-bis(3\u27,4\u27-ethylenedioxythiophene)-phenylene) (PBEDOT-P) in Cholesterics

Electrochemical polymerization of 1,4-bis(3\u27,4\u27-ethylenedioxythiophene)-phenylene (BEDOT-P) was performed in a cholesteric liquid crystal (CLC) as an anisotropic electrolyte solution. The surface morphology and optical properties of the polymer (poly(BEDOT-P)/CLC) thus prepared in the cholesteric electrolyte were examined

<Preliminary>A Possible Role of Oxalate Produced in the Symbiotic Culture System with a Host Plant Pinus densiflora and a Mycorrhizal Fungus Lactarius hatsudake

この論文は国立情報学研究所の学術雑誌公開支援事業により電子化されました

Preparation of iridescent-reflective poly(furan-co-phenylene)s by electrochemical polymerization in a cholesteric liquid crystal medium

Optically active poly(4,40-di(2-furyl)biphenyl) is successfully prepared by asymmetric electrochemicalpolymerization in a cholesteric liquid crystal (CLC) electrolyte. The polymer thus obtained forms a fingerprintoptical texture similar to that of the CLC electrolyte and a convexo-concave surface structure alongthe fingerprint pattern. The polymer displays iridescence under irradiation with white light, and circulardiffraction upon laser irradiation

Environmental Dependence of Artifact CD Peaks of Chiral Schiff Base 3d-4f Complexes in Soft Mater PMMA Matrix

Four chiral Schiff base binuclear 3d-4f complexes (NdNi, NdCu, GdNi, and GdCu) have been prepared and characterized by means of electronic and CD spectra, IR spectra, magnetic measurements, and X-ray crystallography (NdNi). A so-called artifact peak of solid state CD spectra, which was characteristic of oriented molecules without free molecular rotation, appeared at about 470 nm. Magnetic data of the complexes in the solid state (powder) and in PMMA cast films or solutions indicated that only GdCu preserved molecular structures in various matrixes of soft maters. For the first time, we have used the changes of intensity of artifact CD peaks to detect properties of environmental (media solid state (KBr pellets), PMMA cast films, concentration dependence of PMMA in acetone solutions, and pure acetone solution) for chiral 3d-4f complexes (GdCu). Rigid matrix keeping anisotropic orientation exhibited a decrease in the intensity of the artifact CD peak toward negative values. The present results suggest that solid state artifact CD peaks can be affected by environmental viscosity of a soft mater matrix

4-Phenyl­diazenyl-2-[(R)-(1-phenyl­ethyl)imino­meth­yl]phenol

The title chiral photochromic Schiff base compound, C21H19N3O, was synthesized from (R)-1-phenyl­ethyl­amine and the salicylaldehyde of an azobenzene derivative. The mol­ecule corresponds to the phenol–imine tautomer, the C=N and N—C bond distances being 1.279 (3) and 1.477 (3) Å, respectively. An intra­molecular O—H⋯N hydrogen bond occurs. The diazenyl group adopts a trans form with an N=N distance of 1.243 (3) Å

The theoretical interpretation of the Linear/circularly polarized light-induced molecular orientation of the azo group-containing trans-Achiral Schiff base dinuclear complex composite material

We have investigated linearly polarized UV and circularly polarized UV light-induced molecular orientation, namely increasing optical anisotropy of newly synthesized AZ containing chiral Schiff base Ni (II), Cu (II) and Zn (II) complexes, as organic/inorganic hybrid materials in polymethylmethacrylate (PMMA) cast films. The driving force and reason for polarized UV light-induced molecular orientation of AZ is so-called Weigert effect. The increase of the dichroic was measured with polarized absorption electronic spectra. In addition, we study on newly synthesized composites of AZ containing chiral Schiff base metal complexes with AZ to irradiate with not only linearly but also circularly polarized UV light (Wavelength selective (260, 318(π-π* of AZ) and 380 nm) and continuous wavelength). In addition, we comparison between simulated by TD-DFT and experimental spectra of electronic and CD spectra, and we calculated dipole moments by TD-DFT. Furthermore, we are using the CD spectrum after circularly polarized light UV irradiation, tried to observation change of supramolecular chiral order of the complexes