Results 61 to 70 of about 67,287 (207)

On Conformally Coupled General Relativity

EPJ Web of Conferences, 2018
A gravity model based on the conformal symmetry is presented. To specify the structure of the general coordinate transformations the Ogievetsky theorem is applied. The nonlinear symmetry realization approach is used.
Arbuzov Andrej, Latosh Boris
doaj   +1 more source

Quantum de Sitter horizon entropy from quasicanonical bulk, edge, sphere and topological string partition functions

Journal of High Energy Physics, 2022
Motivated by the prospect of constraining microscopic models, we calculate the exact one-loop corrected de Sitter entropy (the logarithm of the sphere partition function) for every effective field theory of quantum gravity, with particles in arbitrary ...
Dionysios Anninos, Frederik Denef, Y. T. Albert Law, Zimo Sun   +3 more
doaj   +1 more source

Vestigial Plastids in Parasitic Plants: Evolutionary Remnants or Adaptive Innovations?

Plant, Cell &Environment, EarlyView.
ABSTRACT Throughout the evolutionary history of plants, chloroplasts originating from a cyanobacterial endosymbiosis have undergone remarkable adaptation and specialization, giving rise to a multitude of plastid types. The evolution toward parasitism in plants represents a particularly extreme case of such specialization.
Laia Jené, Sergi Munné‐Bosch
wiley   +1 more source

Experience and Time: A Metaphysical Approach

Analytic Philosophy, EarlyView.
ABSTRACT What is the temporal structure of conscious experience? While it is popular to think that our most basic conscious experiences are temporally extended, we will be arguing against this view, on the grounds that it makes our conscious experiences depend on the future in an implausible way.
David Builes, Michele Odisseas Impagnatiello   +1 more
wiley   +1 more source

Applications of Canonical Quantum Gravity to Cosmology [PDF]

Symmetry, 2019
We applied quantum gravitational results to spatially unbounded Friedmann universes and tried to answer some questions related to dark energy, dark matter, inflation, and the missing antimatter.
openaire   +2 more sources

A Path-integral for the Master Constraint of Loop Quantum Gravity

, 2010
In the present paper, we start from the canonical theory of loop quantum gravity and the master constraint programme. The physical inner product is expressed by using the group averaging technique for a single self-adjoint master constraint operator.
Ashtekar A, Baratin A Flori C Thiemann T, Brown L, Conway J B, Dittrich B, Dittrich B, Dittrich B, Dittrich B, Dittrich B, Engle J Han M Thiemann T, Flori C, Flori C Thiemann T, Freidel L, Giesel K, Giesel K, Giesel K, Giulini D, Giulini D, Han M, Han M Thiemann T, Han M Thiemann T, Klauder J, Muxin Han, Pietri R De, Reed M, Reisenberger M P, Thiemann T, Thiemann T, Thiemann T, Thiemann T, Thiemann T, Thiemann T, Thiemann T, Thiemann T, Thiemann T, Thiemann T   +35 more
core   +1 more source

Tudor England and Stewart Scotland Through Spanish Eyes: A Complete Transcription and Translation of Pedro de Ayala's Letter of 1498 to King Ferdinand of Castile and Queen Isabella of Aragon

Renaissance Studies, EarlyView.
Abstract Pedro de Ayala served as a diplomat for King Ferdinand II of Aragon and Queen Isabella I of Castile at the courts of Henry VII, King of England, and James IV, King of Scots. In July 1498, he wrote a letter, partly in cipher, to report to his king and queen on such matters as Spain's interests in international diplomacy; the characters and ...
Adrian William Jaime, Valeria Tapia Cruz, Mairi Cowan   +2 more
wiley   +1 more source

Grand-canonical simulation of 4D simplicial quantum gravity [PDF]

Nuclear Physics B - Proceedings Supplements, 2003
3 pages, 2 figures, LaTeX, Lattice2002(Gravity)
Horata, S., Egawa, H. S., Yukawa, T.
openaire   +3 more sources

General relativity histories theory I: The spacetime character of the canonical description

, 2003
The problem of time in canonical quantum gravity is related to the fact that the canonical description is based on the prior choice of a spacelike foliation, hence making a reference to a spacetime metric.
Anastopoulos C, Arnowitt A, Ashtekar A, Dirac P A M, Gell-Mann M, Gell-Mann M, Griffiths R B, Hartle J B, Isham C, Isham C J, Isham C J, Isham C J, Isham C J, Kuchar K, Ntina Savvidou, Omnès R, Omnès R, Savvidou K, Savvidou K, Savvidou N, Savvidou N, Thiemann T   +21 more
core   +1 more source

Canonical quantum gravity in the Vassiliev invariants arena: II. Constraints, habitats and consistency of the constraint algebra [PDF]

, 1999
In a companion paper we introduced a kinematical arena for the discussion of the constraints of canonical quantum gravity in the spin network representation based on Vassiliev invariants.
Barbero J, Borissov R, Cayetano Di Bartolo, Di Bartolo C, Freidel L, Gambini R, Gambini R, Gambini R, Jorge Griego, Jorge Pullin, Lewandowski J, Marolf D, Rodolfo Gambini, Thiemann T, Thiemann T, Thiemann T   +15 more
core   +3 more sources