Search
Search Results
-
Quasinormal modes and late time tails of perturbation fields on a Schwarzschild-like black hole with a global monopole in the Einstein-bumblebee theory
In this paper we complete a systematic study on quasinormal modes (QNMs) and late time tails for scalar, Dirac and Maxwell fields on a spherically...
-
Observing dynamic oscillatory behavior of triple points among black hole thermodynamic phase transitions
Understanding the dynamic process of black hole thermodynamic phase transitions at a triple point is a huge challenge. In this paper, we conduct the...
-
Constraint on the mass of graviton with gravitational waves
We consider the effects of the mass of graviton on both the waveform of gravitational waves (GWs) and the antenna response to GWs. We determine that...
-
Tensor perturbations from bounce inflation scenario in f(Q) gravity
In this paper, we construct a bounce inflation cosmological scenario in the framework of the modified symmetric teleparallel gravity, namely f ( Q )...
-
Quantum Fields as Deep Learning
We conjecture that quantum fields, such as the Higgs field, are related to a restricted Boltzmann machine (RBM) for deep neural networks. An...
-
Pre-inflation and trans-Planckian censorship
We investigate the implication of trans-Planckian censorship conjecture (TCC) for the initial state of primordial perturbations. It is possible to...
-
Higher derivative scalar-tensor monomials and their classification
We make a full classification of scalar monomials built of the Riemann curvature tensor up to the quadratic order and of the covariant derivatives of...
-
Non-parametric reconstruction of growth index via Gaussian processes
The accelerated cosmic expansion could be due to dark energy within general relativity (GR), or modified gravity. Differentiating between them using...
-
Conformal Frame Dependence on Cosmological Observations in Scalar-Tensor Theories of Gravity
Cosmological observations provide more accurate values both for the background evolution of the Universe and for the structure formation. These...
-
Large Scale Structure in Redshift Space
The map** of dark matter clustering from real space to redshift space introduces the anisotropic property to the measured density power spectrum in...
-
Reconstruction of constant slow-roll inflation
Using the relations between the slow-roll parameters and the power spectra for the single field slow-roll inflation, we derive the scalar spectral...
-
Dispersion relation and surface gravity of universal horizons
In Einstein-aether theory, violating Lorentz invariance permits some super-luminal communications, and the universal horizon can trap excitations...
-
Generalized parallel transport and coordinate transformations in f(R) gravity
In this paper, we study the generalized parallel transport of vectors and generalized coordinate transformations between generalized reference frames...
-
Gravitational entropy of a Schwarzschild-type black hole
In this study, Clifton, Ellis and Tavakol’s gravitational entropy proposal is used to determine the entropy of free gravitational fields due to a...
-
Thermodynamics of general scalar-tensor theory with non-minimally derivative coupling
With the usual definitions for the entropy and the temperature associated with the apparent horizon, we discuss the first law of the thermodynamics...
-
Nonommutative wormholes in f(R) gravity
This paper discusses several new exact solutions for static wormholes in f ( R ) gravity with a noncommutative-geometry background. In the first part of...
-
Origin of the universe: A hint from Eddington-inspired Born-Infeld gravity
We study the ‘initial state’ of an anisotropic universe in Eddington-inspired Born-Infeld gravity filled with a scalar field, whose potential has...
-
Behavior of interacting Ricci dark energy in logarithmic
f(T) gravityIn the present work, we have considered a modified gravity model dubbed as ‘logarithmic f ( T ) gravity’ as reported by Bamba et al. (J. Cosmol....
-
Loop quantum modified gravity and its cosmological application
A general nonperturvative loop quantization procedure for metric modified gravity is reviewed. As an example, this procedure is applied to...