Condensed Matter

2109 Submissions

[3] viXra:2109.0212 [pdf] submitted on 2021-09-30 21:45:49

Infrared Spectroscopy of the Two Esters from 2,3,4,5-Tetrahydro-Oxepine Derivatives, New Nano Molecules

Authors: Ricardo Gobato, Alireza Heidari, Lauro Figueroa Valverde, Abhijit Mitra, Marcela Rosas Nexticapa, Maria López Ramos, Maria Virginia del Socorro Mateu Armad, Magdalena Alvarez Ramirez, Francisco Díaz Cedillo, Ibtihal Kadhim Kareem Dosh
Comments: 4 Pages.

The work focused on determining the Infrared spectroscopy (IRS) of the two compounds calculated are from two esters (compounds C1 and C2) from 2,3,4,5-Tetrahydro-oxepine derivatives, here called C1 and C2. The IRS was obtained via computational methods ab initio Restricted Hartree-Fock. Optimization of molecular structure via UFF, followed by PM3, RHF/EPR-II and RHF/STO-6G, thus obtaining a stable structure, in STP. The molecule was obtained, whose composition is C: 81.7%; H: 7.1%; N: 3.4%; O: 7.8%, 411.53536 g, and molecular formula: C28H29NO2 for C1 and C: 70.6%; H: 7.4%; N: 10.3%; O: 11.7%, 544.68439 g, and molecular formula: C32H40N4O4. The highest vibrational absorbance frequency peaks for the C1 and C2 molecule are found at the frequency of 1793.58 cm-1, 1867.14 cm-1 and 1956.39 cm-1, for C1 and 1368.99 cm-1, 1409.43 cm-1 and 1790.47 cm-1, for C2, respectively. Limitations our study has so far been limited to computational simulation via quantum mechanics (QM) an applied theory. Our results and calculations are compatible with the theory of QM.
Category: Condensed Matter

[2] viXra:2109.0119 [pdf] submitted on 2021-09-12 10:04:45

An Arabic Dictionary: "Al-Mujam al-W\'{a}fi" Or, "Adhunik Arabi-Bangla Abhidhan" and the Onsager's Solution

Authors: Anindya Kumar Biswas
Comments: 18 Pages.

We consult an Arabic dictionary: "al-Mujam al-w\'{a}fi" or, "adhunik arabi-bangla abhidhan" by Dr. M. Fazlur Rahman. We draw the natural logarithm of the number of words, normalised, starting with a letter vs the natural logarithm of the rank of the letter. We find that the words underlie a magnetisation curve. The magnetisation curve i.e. the graph of reduced magnetisation vs reduced temperature is the exact Onsager solution of two dimensional Ising model in the absence of external magnetic field.
Category: Condensed Matter

[1] viXra:2109.0050 [pdf] submitted on 2021-09-07 00:50:10

Feynman Diagrams to Explain Superconductivity in Ybco

Authors: Valeriy Kizka
Comments: 6 Pages. 4 Figures. DOI: 10.13140/RG.2.2.33254.96329

Using the Feynman diagrams, I tried to explain the existence of a pseudogap in YBCO and why below the critical temperature, the YBCO sample has zero resistivity, but a finite value of the superconducting current flowing through the sample.
Category: Condensed Matter