Results 201 to 210 of about 49,504 (245)

Transmembrane association of DDR1 and DDR2 mediated by Leucine zipper motifs. [PDF]

open access: yesMagn Reson Lett
Huang F   +6 more
europepmc   +1 more source

Unique conformational dynamics and protein recognition of A-to-I hyper-edited dsRNA. [PDF]

open access: yesNucleic Acids Res
Müller-Hermes C   +6 more
europepmc   +1 more source

Nonperturbative solutions for canonical quantum gravity

open access: yesNonperturbative solutions for canonical quantum gravity
openaire  

Canonical Quantum Gravity

, 2017
Letting aside temporarily the possibility to unify all forces in a single consistent framework, a question one can ask oneself is whether quantum mechanics can resolve a particular singularity, such as the big bang or that inside a black hole.
G. Calcagni
semanticscholar   +2 more sources

Unimodular theory of canonical quantum gravity.

Physical Review D, 1989
Einstein's theory of gravity is reformulated so that the cosmological constant becomes an integration constant of the theory, rather than a "coupling" constant. However, in the Hamiltonian form of the theory, the Hamiltonian constraint is missing, while the usual momentum constraints are still present.
W. G. Unruh
semanticscholar   +3 more sources

Time and the interpretation of canonical quantum gravity.

Physical Review D, 1989
The unsatisfactory status of the interpretation of the wave function of the Universe in canonical quantum gravity is reviewed. The ``naive interpretation'' obtained by straightforwardly applying the standard interpretive rules to the canonical quantization of general relativity is manifestly unacceptable; the ``WKB interpretation'' has only a limited ...
W. G. Unruh, W. G. Unruh, Robert M. Wald
semanticscholar   +3 more sources

Time and complex numbers in canonical quantum gravity.

Physical Review D, 1993
It is noted that not only time but also the imaginary unit is absent from the Wheeler-DeWitt equation (WDE), the basic equation of canonical quantum gravity. This leads to a severe problem in an attempt to recover the time-dependent Schrodinger equation from the WDE. It is suggested that the problem will be solved if the WDE is actually complex and not
Julian B. Barbour
semanticscholar   +3 more sources

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