60 research outputs found
de Broglie-Bohm Interpretatin for Analytic Solutions of The Wheeler-DeWitt Equation in Spherically Symmetric Space-time
We discuss the implications of a wave function for quantum gravity, which
involves nothing but 3-dimensional geometries as arguments and is invariant
under general coordinate transformations. We derive an analytic wave function
from the Wheeler-DeWitt equation for spherically symmetric space-time with the
coordinate system arbitrary. The de Broglie-Bohm interpretation of quantum
mechanics is applied to the wave function. In this interpretation,
deterministic dynamics can be yielded from a wave function in fully quantum
regions as well as in semiclassical ones. By introducing a coordinate system
additionally, we obtain a cosmological black hole picture in compensation for
the loss of general covariance. Our analysis shows that the de Broglie-Bohm
interpretation gives quantum gravity an appropriate prescription to introduce
coordinate systems naturally and extract information from a wave function as a
result of breaking general covariance.Comment: 14 pages, REVTeX; abstract and content revise
Analytic Solutions of The Wheeler-DeWitt Equation in Spherically Symmetric Space-time
We study the quantum theory of the Einstein-Maxwell action with a
cosmological term in the spherically symmetric space-time, and explored quantum
black hole solutions in Reissner-Nordstrom-de Sitter geometry. We succeeded to
obtain analytic solutions to satisfy both the energy and momentum constraints.Comment: LaTeX file, 15 page
de Broglie-Bohm Interpretation for the Wave Function of Quantum Black Holes
We study the quantum theory of the spherically symmetric black holes. The
theory yields the wave function inside the apparent horizon, where the role of
time and space coordinates is interchanged. The de Broglie-Bohm interpretation
is applied to the wave function and then the trajectory picture on the
minisuperspace is introduced in the quantum as well as the semi-classical
region. Around the horizon large quantum fluctuations on the trajectories of
metrics and appear in our model, where the metrics are functions of
time variable and are expressed as . On the trajectories, the classical relation holds,
and the event horizon U=0 corresponds to the classical apparent horizon on
. In order to investigate the quantum fluctuation near the horizon, we
study a null ray on the dBB trajectory and compare it with the one in the
classical black hole geometry.Comment: 20 pages, Latex, 7 Postscript figure
Nuclear energy in the public sphere: Anti-nuclear movements vs. industrial lobbies in Spain (1962-1979)
The final publication is available at Springer via http://dx.doi.org/10.1007/s11024-014-9263-0This article examines the role of the Spanish Atomic Forum as the
representative of the nuclear sector in the public arena during the golden years of the
nuclear power industry from the 1960s to 1970s. It focuses on the public image
concerns of the Spanish nuclear lobby and the subsequent information campaigns
launched during the late 1970s to counteract demonstrations by the growing and
heterogeneous anti-nuclear movement. The role of advocacy of nuclear energy by
the Atomic Forum was similar to that in other countries, but the situation in Spain
had some distinguishing features. Anti-nuclear protest in Spain peaked in 1978
paralleling the debates of a new National Energy Plan in Congress, whose first draft
had envisaged a massive nuclearization of the country. We show how the approval
of the Plan in July 1979, with a significant reduction in the nuclear energy component,
was influenced by the anti-nuclear protest movements in Spain. Despite the
efforts of the Spanish Atomic Forum to counter its message, the anti-nuclear
movement was strengthened by reactions to the Three Mile Island accident in March
1979
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