scholarly journals Vacuum polarization of the quantized massive scalar field in Reissner-Nordström spacetime

2010 ◽  
Vol 81 (12) ◽  
Author(s):  
Jerzy Matyjasek ◽  
Dariusz Tryniecki ◽  
Katarzyna Zwierzchowska
Keyword(s):  
Scalar Field ◽  
Vacuum Polarization ◽  
Massive Scalar ◽  
Massive Scalar Field

scholarly journals ENTROPY OF SCALAR FIELD NEAR A SCHWARZSCHILD BLACK HOLE HORIZON

2006 ◽  
Vol 21 (30) ◽  
pp. 6183-6190 ◽  
Author(s):  
M. R. SETARE
Keyword(s):  
Black Hole ◽  
Scalar Field ◽  
Spherical Shell ◽  
Polarization Effect ◽  
Vacuum Polarization ◽  
Mixed Boundary Condition ◽  
Mixed Boundary ◽  
Massive Scalar ◽  
Schwarzschild Black Hole ◽  
Massive Scalar Field

In this paper we compute the correction to the entropy of Schwarzschild black hole due to the vacuum polarization effect of massive scalar field. The Schwarzschild black hole is supposed to be confined in spherical shell. The scalar field obeying mixed boundary condition on the spherical shell.

scholarly journals Vacuum Polarization and Scalar Field Effects in the Early Universe

1988 ◽  
Vol 130 ◽  
pp. 515-515
Author(s):  
S. Gottlöber ◽  
V. Müller ◽  
H. J. Haubold ◽  
J. P. Mücket
Keyword(s):  
Scalar Field ◽  
Vacuum Polarization ◽  
Particle Production ◽  
Energy Condition ◽  
Time Interval ◽  
Massive Scalar ◽  
Massive Scalar Field ◽  
Quantum Process ◽  
Polarization Effects ◽  
The Universe

Talcing into account vacuum polarization effects and a coherent massive scalar field we consider a singularity free cosmological model from which an intermediate inflationary stage follows quite naturally. According to the ideas of Tryon, Fomin, Zeldovich and others on the spontaneous creation of an universe by a quantum process the newly created universe must be closed. Its evolution starts from a finite initial value a of the order of the Planck length with a zero velocity ho = 0 (h - Hubble parameter). Therefore, in this moment an effective source term not fulfilling the strong energy condition must be dominant. It can originate fron a coherent massive scalar field (mass m) with zero kinetic energy and/or the vacuum polarization (considered here in the form of a modified gravitational Lagrangian with quadratic terms of the Ricci scalar). The corresponding general Lagrangian reads (c = h =1) where ∝ is a negative coupling constant and Lmat is the Lagrangian of other possible existing matter. Both the massive scalar field and the vacuum polarization effects drive the universe to expand exponentially for a definite time interval depending on the initial radius a0 and the parameters m and ∝, during which all other matter being originally present is diluted. The following small oscillations superimposed on the dust-like power law behaviour of the scale factor cause an intensive particle production, and the universe heats up to a radiation dominated Friedmann universe. This process must terminate before baryogenesis. The matching of the different phases of the cosmological evolution and the requirement to fit the parameters of the observed universe lead to a definite parameter range for m and |∝| well below the Planck values. In consequence the present mass density must be equal to the critical one (Ω = 1) with high accuracy.

scholarly journals Log to log-log crossover of entanglement in a (1+1) -dimensional massive scalar field

2021 ◽  
Vol 103 (12) ◽  
Author(s):  
Parul Jain ◽  
S. Mahesh Chandran ◽  
S. Shankaranarayanan
Keyword(s):  
Scalar Field ◽  
Massive Scalar ◽  
Massive Scalar Field

scholarly journals Casimir effect for a massive scalar field under mixed boundary conditions

2003 ◽  
Vol 33 (4) ◽  
pp. 860-866 ◽  
Author(s):  
A.C. Aguiar Pinto ◽  
T.M. Britto ◽  
R. Bunchaft ◽  
F. Pascoal ◽  
F.S.S. da Rosa
Keyword(s):  
Scalar Field ◽  
Boundary Conditions ◽  
Mixed Boundary ◽  
Casimir Effect ◽  
Mixed Boundary Conditions ◽  
Massive Scalar ◽  
Massive Scalar Field

Charged Black Holes with Massive Scalar Field

2009 ◽  
Author(s):  
D. Georgieva ◽  
I. Stefanov ◽  
M. Todorov ◽  
S. Yazadjiev ◽  
Michail D. Todorov ◽  
...  
Keyword(s):  
Black Holes ◽  
Scalar Field ◽  
Massive Scalar ◽  
Massive Scalar Field ◽  
Charged Black Holes

scholarly journals Entanglement of coupled massive scalar field in background of dilaton black hole

2009 ◽  
Vol 677 (3-4) ◽  
pp. 186-189 ◽  
Author(s):  
Jieci Wang ◽  
Qiyuan Pan ◽  
Songbai Chen ◽  
Jiliang Jing
Keyword(s):  
Black Hole ◽  
Scalar Field ◽  
Massive Scalar ◽  
Massive Scalar Field ◽  
Dilaton Black Hole
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