Results 201 to 210 of about 766,537 (359)

Energy Symmetry Breaking of Dirac and Weyl Fermions in Magnetized Spinning Conical Geometries

open access: yesAdvanced Theory and Simulations, EarlyView.
Exact solutions for relativistic fermions in magnetized, spinning conical geometries reveal defect‐induced symmetry breaking between fermion and antifermion energies. Energy levels depend on the magnetic field, background geometry, and fractionalized spin. When the defect's spin dominates, quantum effects diminish.
Abdullah Guvendi, Omar Mustafa
wiley   +1 more source

Neutron-capture Element Abundances of 491 Stars in Milky Way Dwarf Satellite Galaxies from Medium-resolution Spectra

open access: yesThe Astrophysical Journal
The chemical compositions of evolved stars in Local Group dwarf spheroidal galaxies (dSphs) provide insight into the galaxy’s past star formation and nucleosynthesis. Neutron-capture element abundances are especially interesting.
Lauren E. Henderson   +4 more
doaj   +1 more source

"Doublet", Neutron and Neutron stars --- An essay on Landau and Neutron stars

open access: yes, 2011
The concept of extremely dense matter at supra-nuclear density was first speculated by L. Landau in the beginning of 1930s when neutron was just discovered. A historical review on these issues not only explains the interaction between micro and cosmic physics, but also has profound implications for scientific innovation.
openaire   +2 more sources

Reconstructing Three‐Dimensional Optical Anisotropy with Tomographic Müller‐Polarimetric Microscopy

open access: yesAdvanced Science, EarlyView.
Tomographic Müller polarimetric microscopy is a novel imaging technique that resolves 3D birefringent properties of bulky samples, unveiling hierarchical nanostructures at microscopic resolution. Based on incoherent visible‐light polarimetry, it achieves experimental simplicity by eliminating phase measurements.
Yang Chen   +4 more
wiley   +1 more source

A Search for Low-mass Neutron Stars in the Third Observing Run of Advanced LIGO and Virgo

open access: yesThe Astrophysical Journal
Most observed neutron stars have masses around 1.4 M _⊙ , consistent with current formation mechanisms. To date, no subsolar-mass neutron star has been observed.
Keisi Kacanja, Alexander H. Nitz
doaj   +1 more source

Hyperons in neutron stars

open access: yesZeitschrift f�r Physik A Atomic Nuclei, 1987
Generalized beta equilibrium involving nucleons, hyperons and isobars is examined for neutron star matter. The hyperons produce a considerable softening of the equation of state. It is shown that the observed masses of neutron stars can be used to settle a recent controversy concerning the nuclear compressibility.
openaire   +3 more sources

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