Results 111 to 120 of about 966,659 (353)

A superconductor to superfluid phase transition in liquid metallic hydrogen

, 2004
Although hydrogen is the simplest of atoms, it does not form the simplest of solids or liquids. Quantum effects in these phases are considerable (a consequence of the light proton mass) and they have a demonstrable and often puzzling influence on many ...
Asle Sudbø, DJ Stevenson, E Babaev, E Babaev, Egor Babaev, F Datchi, J Jaffe, J Jaffe, J Smiseth, K Fossheim, K Moulopolos, N. W. Ashcroft, NW Ashcroft, NW Ashcroft, O Penrose, RJ Hemley, T Guillot   +16 more
core   +1 more source

Multimodal Data‐Driven Microstructure Characterization

Advanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang, Santiago Benito, Özge Özgün, Sebastian Weber, Markus Stricker   +4 more
wiley   +1 more source

Fine Structure Constant, Domain Walls, and Generalized Uncertainty Principle in the Universe

International Journal of Mathematics and Mathematical Sciences, 2011
We study the corrections to the fine structure constant from the generalized uncertainty principle in the spacetime of a domain wall. We also calculate the corrections to the standard formula to the energy of the electron in the hydrogen atom to the ...
Luigi Tedesco
doaj   +1 more source

Lowering of the Kinetic Energy in Interacting Quantum Systems

, 2002
Interactions never lower the ground state kinetic energy of a quantum system. However, at nonzero temperature, where the system occupies a thermal distribution of states, interactions can reduce the kinetic energy below the noninteracting value. This can
A. B. Migdal, Burkhard Militzer, D. Saumon, D. M. Ceperley, D. M. Ceperley, D. M. Ceperley, E. L. Pollock, G. Baym, L. D. Landau, N. W. Ashcroft   +9 more
core   +1 more source

Ground state of nonassociative hydrogen and upper bounds on the magnetic charge of elementary particles [PDF]

, 2021
Martin Bojowald, Suddhasattwa Brahma, Umut Büyükçam, Martijn van Kuppeveld   +3 more
openalex   +1 more source

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

Hydrogen molecule in a magnetic field: The lowest states of theΠmanifold and the global ground state of the parallel configuration [PDF]

, 1998
T. Detmer, Peter Schmelcher, Lorenz S. Cederbaum   +2 more
openalex   +1 more source

Copper Nanocrystallization in Anodic Oxide Films of Ti–Cu‐Based Bulk Metallic Glass and Its Effect on the Corrosion Resistance and Cytocompatibility

Advanced Engineering Materials, EarlyView.
Viktoriia Shtefan, Thorgund Nemec, Ute Hempel, Annett Gebert and coworkers demonstrate that anodic treatment of Ti–Cu‐based metallic glass in a nontoxic pyrophosphate electrolyte forms a protective bilayered Ti/Zr‐oxide film enriched with Cu nanocrystals.
Viktoriia Shtefan, Nora Fernández Navas, Thorgund Nemec, Ivan Kaban, Ute Hempel, Andrea Voss, Volker Hoffmann, Darius Pohl, Annett Gebert   +8 more
wiley   +1 more source

Towards the Solution of the Many-Electron Problem in Real Materials: Equation of State of the Hydrogen Chain with State-of-the-Art Many-Body Methods

Physical Review X, 2017
We present numerical results for the equation of state of an infinite chain of hydrogen atoms. A variety of modern many-body methods are employed, with exhaustive cross-checks and validation.
Mario Motta, David M. Ceperley, Garnet Kin-Lic Chan, John A. Gomez, Emanuel Gull, Sheng Guo, Carlos A. Jiménez-Hoyos, Tran Nguyen Lan, Jia Li, Fengjie Ma, Andrew J. Millis, Nikolay V. Prokof’ev, Ushnish Ray, Gustavo E. Scuseria, Sandro Sorella, Edwin M. Stoudenmire, Qiming Sun, Igor S. Tupitsyn, Steven R. White, Dominika Zgid, Shiwei Zhang   +20 more
doaj   +1 more source

Pressure Shifts in High-Precision Hydrogen Spectroscopy: I. Long-Range Atom-Atom and Atom-Molecule Interactions

, 2019
We study the theoretical foundations for the pressure shifts in high-precision atomic beam spectrosopy of hydrogen, with a particular emphasis on transitions involving higher excited P states.
Adhikari, C. M., Dawes, R., Jentschura, U. D., Kolachevsky, N., Matveev, A.   +4 more
core   +1 more source