Results 91 to 100 of about 18,545 (191)

Generalized virial theorem in Palatini $f(R)$ gravity

open access: yes, 2009
We use the collision-free Boltzmann equation in Palatini $f({\mathcal{R}})$ gravity to derive the virial theorem within the context of the Palatini approach.
A. S. Sefiedgar   +8 more
core   +3 more sources

Three-body resonance states just below the antiproton and hydrogen dissociation threshold

open access: yesEPJ Web of Conferences, 2018
We analyze two shallow resonance states below the antiproton hydrogen dissociation threshold with a non-adiabatic three-body calculation. Rearrangement correlation between initial channel and protonium formation channel is explicitly included in the ...
Yamashita Takuma, Kino Yasushi
doaj   +1 more source

Clausius/Cosserat/Maxwell/Weyl Equations: The Virial Theorem Revisited [PDF]

open access: yes, 2015
In 1870, R. Clausius found the virial theorem which amounts to introduce the trace of the stress tensor when studying the foundations of thermodynamics, as a way to relate the absolute temperature of an ideal gas to the mean kinetic energy of its ...
Pommaret, Jean-François
core   +3 more sources

The Virial Theorem for Retarded Gravity

open access: yesInternational Journal of Modern Physics D, 2023
The general theory of relativity (GR) is symmetric under smooth coordinate transformations also known as diffeomorphisms. The general coordinate transformation group has a linear subgroup denoted the Lorentz group of symmetry which is maintained also in the weak field approximation to GR.
openaire   +1 more source

Closed-Shell and Chemical Bonding Effects are Almost Negligible in Two-Digit Z Elements

open access: yesCHIMIA, 1988
In an atom, the total binding energy of Z electrons is close to EGG = Z2.4 rydberg, with observed (available up to Z = 17) and calculated non-relativistic values decreasing from 1.036 EGG for Z = 5 to 0.996 EGG for Z = 90; and relativistic values going ...
Christian K. Jørgensen
doaj   +1 more source

Dynamical Structure of NGC 4486 [PDF]

open access: yesJournal of Astronomy and Space Sciences, 1987
The peculiar elliptical (EOp) galaxy NGC 4486 and two KOII comparison stars HR5450, HR6935 were observed spectroscopically using the 74-inch telescope and Image Tube at Mt. Stomlo Observatory.
Kyung-Suk Park, Mun-Suk Chun
doaj  

Reflections on dipolar quantum fluids

open access: yesComptes Rendus. Physique
We present a thermodynamic description of ultracold gases with dipolar interactions which properly accounts for the long-range nature and broken rotation invariance of the interactions.
Zwerger, Wilhelm
doaj   +1 more source

Line-of-Sight Mass Estimator and the Masses of the Milky Way and Andromeda Galaxy

open access: yesUniverse
The total mass of a galaxy group, such as the Milky Way (MW) and the Andromeda Galaxy (M 31), is typically determined from the kinematics of satellites within their virial zones. Bahcall and Tremaine (1981) proposed the v2r estimator as an alternative to
Danila Makarov   +3 more
doaj   +1 more source

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