local energy density
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2018 ◽  
Vol 27 (14) ◽  
pp. 1847022 ◽  
Author(s):  
Jens Boos

When a positively charged impurity is placed inside a cold metal, the resulting charge density around that object exhibits characteristic ripples to negative values, known as Friedel oscillations. In this essay, we describe a somewhat analogous effect in (i) linearized higher-derivative gravity and (ii) linearized infinite-derivative “ghost-free” gravity: when a gravitational impurity (point particle) is placed in Minkowski vacuum, the local energy density [Formula: see text] (with [Formula: see text]) exhibits oscillations to negative values. The wavelength of these oscillations is roughly given by (i) the Pauli–Villars regularization scale and (ii) the scale of nonlocality. We hence dub this phenomena gravitational Friedel oscillations.


2016 ◽  
Vol 33 (22) ◽  
pp. 225003 ◽  
Author(s):  
Sebastian Fischetti ◽  
Andrew Hickling ◽  
Toby Wiseman

RSC Advances ◽  
2015 ◽  
Vol 5 (44) ◽  
pp. 35274-35281 ◽  
Author(s):  
Maolin Bo ◽  
Yongling Guo ◽  
Yongli Huang ◽  
Yonghui Liu ◽  
Yan Wang ◽  
...  

Atomic undercoordination shortens the interatomic bond, deepens the energy level, raises the local energy density and lowers the atomic cohesive energy of Na solid skins and clusters.


2011 ◽  
Vol 84 (2) ◽  
Author(s):  
D. Gambacurta ◽  
L. Li ◽  
G. Colò ◽  
U. Lombardo ◽  
N. Van Giai ◽  
...  

2011 ◽  
Vol 2011.24 (0) ◽  
pp. 225-226
Author(s):  
Masanori KOHYAMA ◽  
Shigeki SAITOU ◽  
Shingo TANAKA ◽  
Yoshinori SHIIHARA ◽  
Shoji ISHIBASHI

2010 ◽  
Vol 25 (21n23) ◽  
pp. 1923-1926 ◽  
Author(s):  
M. YAMAGAMI ◽  
Y. R. SHIMIZU ◽  
T. NAKATSUKASA

We propose a local energy density functional for global description of pairing correlations by focusing on the neutron excess dependence. We show the clear correlation between pairing gaps and effective mass parameters as a function of neutron excess. This effect can be taken into account to the density functional by the isovector density dependence in the particle-particle channel.


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