Results 1 to 10 of about 2,694 (262)

Quantum mechanics from general relativity and the quantum Friedmann equation

European Physical Journal C: Particles and Fields
We demonstrate that the recently introduced linear equation, reformulating the first Friedmann equation, is the first-order WKB expansion of a quantum cosmological equation.
M. Matone, N. Dimakis
doaj   +1 more source

Minisuperspace cosmology in extended geometric trinity of gravity

European Physical Journal C: Particles and Fields
We investigate Extended Geometric Trinity of Gravity at both classical and quantum cosmological levels using the minisuperspace approach. Adopting Noether symmetries to select viable models, we examine metric-affine theories of gravity, in particular the
Emmanuele Battista, Salvatore Capozziello, Stefano Pastore   +2 more
doaj   +1 more source

On the Choice of Variable for Quantization of Conformal GR

Universe
The possibility of using spin connection components as basic quantization variables of a conformal version of general relativity is studied. The considered model contains gravitational degrees of freedom and a scalar dilaton field.
A. B. Arbuzov, A. A. Nikitenko
doaj   +1 more source

Time dilation in quantum systems and decoherence

New Journal of Physics, 2017
Both quantum mechanics and general relativity are based on principles that defy our daily intuitions, such as time dilation, quantum interference and entanglement.
Igor Pikovski, Magdalena Zych, Fabio Costa, Časlav Brukner   +3 more
doaj   +1 more source

On the Wavefunction Collapse

Quanta, 2016
Wavefunction collapse is usually seen as a discontinuous violation of the unitary evolution of a quantum system, caused by the observation. Moreover, the collapse appears to be nonlocal in a sense which seems at odds with general relativity.
Ovidiu Cristinel Stoica
doaj   +1 more source

About the Absolute Analogy Between Electromagnetism and Gravitomagnetism

Reports in Advances of Physical Sciences
This study proposes a new formulation of gravitational field dynamics using Maxwell-like equations, thus offering an alternative to Einstein’s general theory of relativity.
Borros Arneth
doaj   +1 more source

Many Phases in a Hairy Box in Three Dimensions

Universe
In this paper, I investigate gravitational thermodynamics of the Einstein–Maxwell–scalar system in three dimensions without a cosmological constant. In a previous work by Krishnan, Shekhar, and Bala Subramanian, it was argued that this system has no BH ...
Shoichiro Miyashita
doaj   +1 more source

Rotating effects on the scalar field in the cosmic string spacetime, in the spacetime with space-like dislocation and in the spacetime with a spiral dislocation

European Physical Journal C: Particles and Fields, 2018
In the interface between general relativity and relativistic quantum mechanics, we analyse rotating effects on the scalar field subject to a hard-wall confining potential.
R. L. L. Vitória, K. Bakke
doaj   +1 more source

Testing quantum theory on curved spacetime with quantum networks

Physical Review Research
Quantum technologies present new opportunities for fundamental tests of nature. One potential application is to probe the interplay between quantum physics and general relativity—a field of physics with no empirical evidence yet.
Johannes Borregaard, Igor Pikovski
doaj   +1 more source

Advantages of using Three-Dimensional Time in the Quantum World, within General Relativity and for Black Holes — a Hypothesis

Reports in Advances of Physical Sciences
This hypothetical paper tries to demonstrate the advantages of defining time as three-dimensional and shows examples where three-dimensional time may possibly help in solving unsolved problems of physics.
Árpád Csekő
doaj   +1 more source