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We analyze superpositions of ortho- and para-Helium states, considering the possible existence of stationary and metastable states in the system. In particular, the metastable superposition of 1s2s ortho and para states seems to be…

Quantum Physics · Physics 2008-08-12 Pedro Sancho , Luis Plaja

On the basis of microscopic theory it is demonstrated how the coupling between the electrons by means of magnetization fluctuations in ferromagnetic metal with orthorhombic symmetry gives rise equal spin pairing superconducting state with…

Superconductivity · Physics 2015-06-22 V. P. Mineev

Gibbs free energy models are derived from the calculated electronic and phonon structure of two possible models of $\gamma$-alumina, a defective spinel phase and a hydrogenated spinel phase. The intrinsic vacancies and hydrogen in the two…

Materials Science · Physics 2015-06-19 Yunguo Li , Cláudio M. Lousada , Pavel A. Korzhavyic

Urea denatures proteins due to its strong tendency to dehydrate the first solvation shell via urea-residue preferential binding. However, even after extensive experimental and computational investigations, the influence of urea on the…

Soft Condensed Matter · Physics 2022-12-05 Luis A. Baptista , Yani Zhao , Kurt Kremer , Debashish Mukherji , Robinson Cortes-Huerto

In molecules like hydrogen, most chemical bonds are formed by sharing two electrons from each atom in the bonding molecular orbital (two-center-two-electron (2c2e) bonding). There are, however, different kinds of chemical bonding. The I3-…

Strongly Correlated Electrons · Physics 2023-09-06 Daigorou Hirai , Keita Kojima , Naoyuki Katayama , Mitsuaki Kawamura , Daisuke Nishio-Hamane , Zenji Hiroi

The enthalpies of solution of H in Zr binary intermetallic compounds formed with Cu, Cr, Fe, Mo, Ni, Nb, Sn and V were calculated by means of density functional theory simulations and compared to that of H in {\alpha}-Zr. It is predicted…

Materials Science · Physics 2014-01-23 P. A. Burr , S. T. Murphy , S. C. Lumley , M. R. Wenman , R. W. Grimes

Tungsten oxide-organic layered hybrid materials have been studied by infrared and Raman spectroscopy, and demonstrate a difference in bonding nature as the length of the interlayer organic `spacer' molecule is increased.…

Soft Condensed Matter · Physics 2007-05-23 B. Ingham , S. V. Chong , J. L. Tallon

We have performed Molecular Dynamics simulations of ectoine, hydroxyectoine and urea in explicit solvent. Special attention has been spent on the local surrounding structure of water molecules. Our results indicate that ectoine and…

Soft Condensed Matter · Physics 2011-10-06 Jens Smiatek , Rakesh Kumar Harishchandra , Oliver Rubner , Hans-Joachim Galla , Andreas Heuer

The adiabatic connection formalism, usually based on the first-order perturbation theory, has been generalized to an arbitrary order. The generalization stems from the observation that the formalism can be derived from a properly arranged…

Chemical Physics · Physics 2023-10-18 Andreas Savin , Jacek Karwowski

Two Heegaard Floer knot complexes are called stably equivalent if an acyclic complex can be added to each complex to make them filtered chain homotopy equivalent. Hom showed that if two knots are concordant, then their knot complexes are…

Geometric Topology · Mathematics 2020-03-11 Samantha Allen

Recently the identification of 3He-A with the axial state has been questioned. It is suggested that the A-phase can actually be in the axiplanar state. We point out in the present paper that experiments in a film geometry may be useful to…

Condensed Matter · Physics 2009-10-22 S. K. Yip

Electronic tunability in crystals with weakly-bound layers can be achieved through layer stacking order. One such example is MoTe$_2$, where the low-temperature orthorhombic T$_d$ phase is topological and host to Weyl quasiparticles. The…

Materials Science · Physics 2019-04-17 John A. Schneeloch , Chunruo Duan , Xiaoping Wang , Jun Liu , Junjie Yang , Despina Louca

A gas-phase formation route is proposed for the recently detected propargylimine molecule. In analogy to other imines, such as cyanomethanimine, the addition of a reactive radical (C$_2$H in the present case) to methanimine (CH$_2$NH})…

Astrophysics of Galaxies · Physics 2020-11-18 Jacopo Lupi , Cristina Puzzarini , Vincenzo Barone

An earlier paper, entitled "P-hierarchy on $\beta\omega$", investigated the relations between ordinal ultrafilters and the so-called P-hierarchy. This study is continued in the present paper and focuses on the aspects of characterization of…

Logic · Mathematics 2012-11-15 Andrzej Starosolski

Small molecules are often found to exhibit extraordinarily diverse biological activities. Metformin is one of them. It is widely used as anti-diabetic drug for type-two diabetes. In addition to that, metformin hydrochloride shows…

Biomolecules · Quantitative Biology 2018-02-08 Sayantan Mondal , Rudra N Samajdar , Saumyak Mukherjee , Aninda J Bhattacharyya , Biman Bagchi

We discuss the relationship between entropic uncertainty relations and entanglement. We present two methods for deriving separability criteria in terms of entropic uncertainty relations. Especially we show how any entropic uncertainty…

Quantum Physics · Physics 2009-11-10 Otfried Guehne , Maciej Lewenstein

The chemical bond is one of the most powerful, yet controversial concepts in chemistry, explaining property trends in solids. Recently, a novel type of chemical bonding has been identified in several higher chalcogenides, characterized by a…

Topological crystalline insulators (TCI) possess electronic states protected by crystal symmetries, rather than time-reversal symmetry. We show that the transition metal oxides with heavy transition metals are able to support nontrivial…

Strongly Correlated Electrons · Physics 2015-06-12 Mehdi Kargarian , Gregory A. Fiete

We extend an operational characterization of entanglement in terms of stabilizer groups from pure states to mixed states. For a density matrix $\rho_{AB}$, a stabilizer is a factorized unitary matrix $u_A \otimes u_B$ that, under…

Quantum Physics · Physics 2025-07-04 Xiaole Jiang , Daniel Kabat , Gilad Lifschytz , Aakash Marthandan

The linearized Debye-H\"uckel theory for liquid state is shown to provide thermodynamically consistent virial and energy routes for any potential and for any dimensionality. The importance of this result for bounded potentials is discussed.

Statistical Mechanics · Physics 2009-11-14 Andrés Santos , Riccardo Fantoni , Achille Giacometti