Zobrazeno 1 - 10
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pro vyhledávání: '"Fareghbal, Reza"'
Autor:
Fareghbal, Reza
Publikováno v:
Phys. Rev. D 110, 066019 (2024)
The real part of pseudo entropy in conformal field theories is holographically calculated by the area of some extremal spacelike surfaces in the dual dS and AdS spacetimes. We show that the flat-space limit of these curves in three-dimensional (A)dS
Externí odkaz:
http://arxiv.org/abs/2408.03061
Autor:
Fareghbal, Reza, Shajiee, Vahid Reza
In three dimensions, Kerr-de Sitter spacetime as a solution of Einstein gravity with positive cosmological constant has a single cosmological horizon. The flat-space limit (zero cosmological constant limit) of this spacetime is well-defined and yield
Externí odkaz:
http://arxiv.org/abs/2306.04394
Autor:
Azarnia, Sanam, Fareghbal, Reza
Publikováno v:
Phys. Rev. D 106, 026012 (2022)
We use quantum extremal island method to study the information paradox on certain cosmological setups known as three dimensional Kerr-de Sitter spacetimes. To do so, we couple an auxiliary flat bath system to this spacetime in timelike singularity an
Externí odkaz:
http://arxiv.org/abs/2204.08488
Flat-space cosmologies (FSC) are solutions to three dimensional theories of gravity without cosmological constant that have cosmological horizons. A detector located near the time-like singularity of the spacetime can absorb Hawking modes that are cr
Externí odkaz:
http://arxiv.org/abs/2109.04795
Publikováno v:
Phys. Rev. D 102, 066002 (2020)
According to the Ryu-Takayanagi prescription, the entanglement entropy of subsystems in the boundary conformal field theory (CFT) is proportional to the area of extremal surfaces in bulk asymptotically Anti-de Sitter (AdS) spacetimes. The flat-space
Externí odkaz:
http://arxiv.org/abs/2006.16122
Publikováno v:
Phys. Rev. D 100, 106006 (2019)
According to flat/Bondi-Metzner-Sachs invariant field theories (BMSFT) correspondence, asymptotically flat spacetimes in $(d+1)$-dimensions are dual to $d$-dimensional BMSFTs. In this duality, similar to the Ryu-Takayanagi proposal in the AdS/CFT cor
Externí odkaz:
http://arxiv.org/abs/1908.02560
Autor:
Fareghbal, Reza, Karimi, Pedram
Publikováno v:
Phys. Rev. D 98, 046003 (2018)
We use the complexity equals action proposal to calculate the rate of complexity growth for field theories that are the holographic duals of asymptotically flat spacetimes. To this aim, we evaluate the on-shell action of asymptotically flat spacetime
Externí odkaz:
http://arxiv.org/abs/1806.07273
Autor:
Asadi, Mohammad, Fareghbal, Reza
We use flat-space holography to calculate the mutual information and the 3-partite information of a two-dimensional BMS-invariant field theory (BMSFT$_2$). This theory is the putative holographic dual of the three-dimensional asymptotically flat spac
Externí odkaz:
http://arxiv.org/abs/1802.06618
Autor:
Fareghbal, Reza, Mohammadi, Isa
We propose a quasi-local stress tensor for the four-dimensional asymptotically flat Robinson-Trautman geometries by taking the flat-space limit from the corresponding asymptotically AdS solutions. This stress tensor results in the correct charges of
Externí odkaz:
http://arxiv.org/abs/1802.05445
Autor:
Fareghbal, Reza, Karimi, Pedram
Publikováno v:
Eur.Phys.J. C78 (2018) no.3, 267
Using Rindler method we derive the logarithmic correction to the entanglement entropy of a two dimensional BMS-invariant field theory (BMSFT). In particular, we present a general formula for extraction of the logarithmic corrections to both the therm
Externí odkaz:
http://arxiv.org/abs/1709.01804