A bstract Recently, it has been argued in [1] that Jackiw-Teitelboim (JT) gravity can be naturally realized the Karch-Randall braneworld (2 + 1) dimensions. Using ‘complexity=volume’ proposal, we studied this model and computed holographic complexity of JT from bulk perspective. We find grows linearly with boundary time at late times, leading order contribution is proportional to φ 0 , similar ...

In this paper, we use the Karch-Randall braneworld to study theories of quantum gravity in two dimensional (nearly) anti-de Sitter space (AdS$_2$). We focus on effective gravitational setup with branes embedded an asymptotically AdS$_3$ bulk forming a wedge. find appearance two-dimensional Einstein-Hilbert (or Lorenzian version Marolf-Maxfield theory) when are rigid but emergence class dilaton ...

Five-dimensional braneworld cosmology with deSitter (inflationary) brane universe induced by classical and quantum matter is discussed. It is shown that negative energy phantom field with quantum CFT supports the creation of deSitter universe. On the same time, pure phantom or dust with quantum effects, or Chaplygin gas with quantum effects may naturally lead to the occurence of Anti-deSitter b...

The mechanism of gravitational baryogenesis, based on the CPT -violating gravitational interaction between the derivative of the Ricci scalar curvature and the baryon-number current, is investigated in the context of the Gauss-Bonnet braneworld cosmology. We study the constraints on the fundamental five-dimensional gravity scale, the effective scale of B-violation and the decoupling temperature...

In this paper we calculate the emission of gravity waves by the binary pulsar in the framework of five dimensional spacetime. We consider only spacetimes with one compact extra-dimension. We show that the presence of additional degrees of freedom, especially the ’gravi-scalar’ leads to a modification of Einstein’s quadrupole formula. We compute the induced change for the binary pulsar PSR 1913+...

Fabian Schmidt, Wayne Hu, and Marcos Lima Theoretical Astrophysics, California Institute of Technology M/C 350-17, Pasadena, California 91125-0001, USA Department of Astronomy and Astrophysics, Kavli Institute for Cosmological Physics, and Enrico Fermi Institute, The University of Chicago, Chicago, Illinois 60637-1433, USA Department of Physics and Astronomy, University of Pennsylvania, Philade...

In this paper, the modified gravity, which is characterized by factor $\mu$ in linear matter density perturbation theory, reconstructed a completely data-driven and model-independent way via Gaussian process using currently available cosmic observations, consist Pantheon+ SNe Ia samples, observed Hubble parameter $H(z)$ redshift space distortion $f\sigma_8(z)$ data points. The results suggest t...