scholarly journals Shadows of trans-Planckian physics on cosmology and the role of the zero-point energy density

2010 ◽  
Vol 82 (4) ◽  
Author(s):  
Gianpiero Mangano
Keyword(s):  
Energy Density ◽  
Zero Point ◽  
Zero Point Energy ◽  
Point Energy

Thermodynamic Stability of Ice II and Its Hydrogen-Disordered Counterpart: Role of Zero-Point Energy

2015 ◽  
Vol 120 (8) ◽  
pp. 1843-1848 ◽  
Author(s):  
Tatsuya Nakamura ◽  
Masakazu Matsumoto ◽  
Takuma Yagasaki ◽  
Hideki Tanaka
Keyword(s):  
Thermodynamic Stability ◽  
Zero Point ◽  
Zero Point Energy ◽  
Point Energy

Dark energy and dark matter as due to zero point energy

2012 ◽  
Vol 79 (3) ◽  
pp. 327-334 ◽  
Author(s):  
BO LEHNERT
Keyword(s):  
Dark Matter ◽  
Dark Energy ◽  
Energy Density ◽  
Vacuum Energy ◽  
Mass Density ◽  
Zero Point ◽  
Vacuum Energy Density ◽  
Zero Point Energy ◽  
Observable Universe ◽  
Point Energy

AbstractAn attempt is made to explain dark energy and dark matter of the expanding universe in terms of the zero point vacuum energy. This analysis is mainly limited to later stages of an observable nearly flat universe. It is based on a revised formulation of the spectral distribution of the zero point energy, for an ensemble in a defined statistical equilibrium having finite total energy density. The steady and dynamic states are studied for a spherical cloud of zero point energy photons. The ‘antigravitational’ force due to its pressure gradient then represents dark energy, and its gravitational force due to the energy density represents dark matter. Four fundamental results come out of the theory. First, the lack of emitted radiation becomes reconcilable with the concepts of dark energy and dark matter. Second, the crucial coincidence problem of equal orders of magnitude of mass density and vacuum energy density cannot be explained by the cosmological constant, but is resolved by the present variable concepts, which originate from the same photon gas balance. Third, the present approach becomes reconcilable with cosmical dimensions and with the radius of the observable universe. Fourth, the deduced acceleration of the expansion agrees with the observed one. In addition, mass polarity of a generalized gravitation law for matter and antimatter is proposed as a source of dark flow.

Classical dynamics of dissociative adsorption for a nonactivated system: The role of zero point energy

2002 ◽  
Vol 116 (20) ◽  
pp. 9005-9013 ◽  
Author(s):  
H. F. Busnengo ◽  
C. Crespos ◽  
W. Dong ◽  
J. C. Rayez ◽  
A. Salin
Keyword(s):  
Zero Point ◽  
Dissociative Adsorption ◽  
Classical Dynamics ◽  
Zero Point Energy ◽  
Point Energy

Mesoscopic orbital paramagnetism: The role of zero-point energy

2021 ◽  
Vol 520 ◽  
pp. 167366
Author(s):  
Siddhartha Sen ◽  
Lucy Prendeville ◽  
J.M.D. Coey
Keyword(s):  
Zero Point ◽  
Zero Point Energy ◽  
Point Energy

scholarly journals Role of zero point energy in promoting ice formation in a spherical drop of water

2019 ◽  
Vol 1 (3) ◽  
Author(s):  
Prachi Parashar ◽  
K. V. Shajesh ◽  
Kimball A. Milton ◽  
Drew F. Parsons ◽  
Iver Brevik ◽  
...  
Keyword(s):  
Zero Point ◽  
Ice Formation ◽  
Zero Point Energy ◽  
Point Energy ◽  
Spherical Drop

scholarly journals ZERO-POINT ENERGY OF MASSLESS SCALAR FIELDS IN THE PRESENCE OF SOFT AND SEMIHARD BOUNDARIES IN D DIMENSIONS

1999 ◽  
Vol 14 (13) ◽  
pp. 2077-2089 ◽  
Author(s):  
F. CARUSO ◽  
R. DE PAOLA ◽  
N. F. SVAITER
Keyword(s):  
Scalar Field ◽  
Energy Density ◽  
Zero Point ◽  
Scalar Fields ◽  
Flat Space ◽  
Massless Scalar ◽  
Massless Scalar Field ◽  
Zero Point Energy ◽  
Point Energy ◽  
Renormalized Energy

The renormalized energy density of a massless scalar field defined in a D-dimensional flat space–time is computed in the presence of "soft" and "semihard" boundaries, modeled by some smoothly increasing potential functions. The sign of the renormalized energy densities for these different confining situations is investigated. The dependence of this energy on D for the cases of "hard" and "soft/semihard" boundaries are compared.

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